diff --git a/ap/libc/glibc/glibc-2.23/time/Depend b/ap/libc/glibc/glibc-2.23/time/Depend
new file mode 100644
index 0000000..79b2469
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/Depend
@@ -0,0 +1 @@
+timezone
diff --git a/ap/libc/glibc/glibc-2.23/time/Makefile b/ap/libc/glibc/glibc-2.23/time/Makefile
new file mode 100644
index 0000000..e052c07
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/Makefile
@@ -0,0 +1,70 @@
+# Copyright (C) 1991-2016 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+#
+#	Makefile for time routines
+#
+subdir	:= time
+
+include ../Makeconfig
+
+headers	:= time.h sys/time.h sys/timeb.h bits/time.h
+
+routines := offtime asctime clock ctime ctime_r difftime \
+	    gmtime localtime mktime time		 \
+	    gettimeofday settimeofday adjtime tzset	 \
+	    tzfile getitimer setitimer			 \
+	    stime dysize timegm ftime			 \
+	    getdate strptime strptime_l			 \
+	    strftime wcsftime strftime_l wcsftime_l	 \
+	    timespec_get
+aux :=	    era alt_digit lc-time-cleanup
+
+tests	:= test_time clocktest tst-posixtz tst-strptime tst_wcsftime \
+	   tst-getdate tst-mktime tst-mktime2 tst-ftime_l tst-strftime \
+	   tst-mktime3 tst-strptime2 bug-asctime bug-asctime_r bug-mktime1 \
+	   tst-strptime3 bug-getdate1 tst-strptime-whitespace tst-ftime \
+	   tst-tzname
+
+include ../Rules
+
+ifeq ($(run-built-tests),yes)
+LOCALES := de_DE.ISO-8859-1 en_US.ISO-8859-1 ja_JP.EUC-JP
+include ../gen-locales.mk
+
+$(objpfx)tst-ftime_l.out: $(gen-locales)
+$(objpfx)tst-strptime.out: $(gen-locales)
+endif
+
+tz-cflags = -DTZDIR='"$(zonedir)"' \
+	    -DTZDEFAULT='"$(localtime-file)"' \
+	    -DTZDEFRULES='"$(posixrules-file)"'
+
+CFLAGS-tzfile.c = $(tz-cflags)
+CFLAGS-tzset.c = $(tz-cflags)
+CFLAGS-getdate.c = -fexceptions
+
+# Don't warn about Y2k problem in strftime format string.
+CFLAGS-test_time.c = -Wno-format
+
+tst-getdate-ENV= DATEMSK=datemsk TZDIR=${common-objpfx}timezone/testdata
+test_time-ARGS= EST5EDT CST
+
+tst-tzname-ENV = TZDIR=${common-objpfx}timezone/testdata
+CPPFLAGS-tst-tzname.c = -DTZDEFRULES='"$(posixrules-file)"'
+
+bug-getdate1-ARGS = ${objpfx}bug-getdate1-fmt
diff --git a/ap/libc/glibc/glibc-2.23/time/Versions b/ap/libc/glibc/glibc-2.23/time/Versions
new file mode 100644
index 0000000..fd83818
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/Versions
@@ -0,0 +1,68 @@
+libc {
+  GLIBC_2.0 {
+    # global variables
+    __daylight; __timezone; __tzname;
+
+    # functions with special/multiple interfaces
+    __adjtimex;
+
+    # functions used in other libraries
+    __gmtime_r; __gettimeofday;
+
+    # variables in normal name space
+    daylight; timezone; tzname;
+
+    # a*
+    adjtime; adjtimex; asctime; asctime_r;
+
+    # c*
+    clock; ctime; ctime_r;
+
+    # d*
+    difftime; dysize;
+
+    # f*
+    ftime;
+
+    # g*
+    getitimer; gettimeofday; gmtime; gmtime_r;
+
+    # l*
+    localtime; localtime_r;
+
+    # m*
+    mktime;
+
+    # s*
+    setitimer; settimeofday; stime; strftime; strptime;
+
+    # t*
+    time; timegm; timelocal; tzset;
+  }
+  GLIBC_2.1 {
+    # variables in normal name space
+    getdate_err;
+
+    # g*
+    getdate; getdate_r;
+  }
+  GLIBC_2.2 {
+    # w*
+    wcsftime;
+  }
+  GLIBC_2.3 {
+    # these internal names are used by libstdc++
+    __strftime_l; __wcsftime_l;
+
+    # s*
+    strftime_l;
+    # w*
+    wcsftime_l;
+  }
+  GLIBC_2.3.2 {
+    strptime_l;
+  }
+  GLIBC_2.16 {
+    timespec_get;
+  }
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/adjtime.c b/ap/libc/glibc/glibc-2.23/time/adjtime.c
new file mode 100644
index 0000000..5114ead
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/adjtime.c
@@ -0,0 +1,33 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/time.h>
+
+/* Adjust the current time of day by the amount in DELTA.
+   If OLDDELTA is not NULL, it is filled in with the amount
+   of time adjustment remaining to be done from the last `__adjtime' call.
+   This call is restricted to the super-user.  */
+int
+__adjtime (const struct timeval *delta, struct timeval *olddelta)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (adjtime)
+
+weak_alias (__adjtime, adjtime)
diff --git a/ap/libc/glibc/glibc-2.23/time/alt_digit.c b/ap/libc/glibc/glibc-2.23/time/alt_digit.c
new file mode 100644
index 0000000..2167be3
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/alt_digit.c
@@ -0,0 +1,193 @@
+/* Helper functions used by strftime/strptime to handle alternate digits.
+   Copyright (C) 1995-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "../locale/localeinfo.h"
+#include <libc-lock.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include <string.h>
+#include <stdint.h>
+
+/* Some of the functions here must not be used while setlocale is called.  */
+__libc_rwlock_define (extern, __libc_setlocale_lock attribute_hidden)
+
+#define CURRENT(item) (current->values[_NL_ITEM_INDEX (item)].string)
+#define CURRENT_WSTR(item) \
+  ((wchar_t *) current->values[_NL_ITEM_INDEX (item)].wstr)
+
+static void
+_nl_init_alt_digit (struct __locale_data *current)
+{
+  struct lc_time_data *data;
+
+  if (current->private.time == NULL)
+    {
+      current->private.time = malloc (sizeof *current->private.time);
+      if (current->private.time == NULL)
+	return;
+      memset (current->private.time, 0, sizeof *current->private.time);
+      current->private.cleanup = &_nl_cleanup_time;
+    }
+  data = current->private.time;
+
+  if (! data->alt_digits_initialized)
+    {
+      const char *ptr = CURRENT (ALT_DIGITS);
+      size_t cnt;
+
+      data->alt_digits_initialized = 1;
+
+      if (ptr != NULL)
+	{
+	  data->alt_digits = malloc (100 * sizeof (const char *));
+	  if (data->alt_digits != NULL)
+	    for (cnt = 0; cnt < 100; ++cnt)
+	      {
+		data->alt_digits[cnt] = ptr;
+
+		/* Skip digit format. */
+		ptr = strchr (ptr, '\0') + 1;
+	      }
+	}
+    }
+
+}
+
+const char *
+internal_function
+_nl_get_alt_digit (unsigned int number, struct __locale_data *current)
+{
+  const char *result;
+
+  if (number >= 100 || CURRENT (ALT_DIGITS)[0] == '\0')
+    return NULL;
+
+  __libc_rwlock_wrlock (__libc_setlocale_lock);
+
+  if (current->private.time == NULL
+      || ! current->private.time->alt_digits_initialized)
+    _nl_init_alt_digit (current);
+
+  result = ((current->private.time != NULL
+	     && current->private.time->alt_digits != NULL)
+	    ? current->private.time->alt_digits[number]
+	    : NULL);
+
+  __libc_rwlock_unlock (__libc_setlocale_lock);
+
+  return result;
+}
+
+
+const wchar_t *
+internal_function
+_nl_get_walt_digit (unsigned int number, struct __locale_data *current)
+{
+  const wchar_t *result = NULL;
+  struct lc_time_data *data;
+
+  if (number >= 100 || CURRENT_WSTR (_NL_WALT_DIGITS)[0] == L'\0')
+    return NULL;
+
+  __libc_rwlock_wrlock (__libc_setlocale_lock);
+
+  if (current->private.time == NULL)
+    {
+      current->private.time = malloc (sizeof *current->private.time);
+      if (current->private.time == NULL)
+	goto out;
+      memset (current->private.time, 0, sizeof *current->private.time);
+      current->private.cleanup = &_nl_cleanup_time;
+    }
+  data = current->private.time;
+
+  if (! data->walt_digits_initialized)
+    {
+      const wchar_t *ptr = CURRENT_WSTR (_NL_WALT_DIGITS);
+      size_t cnt;
+
+      data->walt_digits_initialized = 1;
+
+      if (ptr != NULL)
+	{
+	  data->walt_digits = malloc (100 * sizeof (const uint32_t *));
+	  if (data->walt_digits != NULL)
+	    for (cnt = 0; cnt < 100; ++cnt)
+	      {
+		data->walt_digits[cnt] = ptr;
+
+		/* Skip digit format. */
+		ptr = __wcschr (ptr, L'\0') + 1;
+	      }
+	}
+    }
+
+  if (data->walt_digits != NULL)
+    result = data->walt_digits[number];
+
+ out:
+  __libc_rwlock_unlock (__libc_setlocale_lock);
+
+  return (wchar_t *) result;
+}
+
+
+int
+internal_function
+_nl_parse_alt_digit (const char **strp, struct __locale_data *current)
+{
+  const char *str = *strp;
+  int result = -1;
+  size_t cnt;
+  size_t maxlen = 0;
+
+  if (CURRENT_WSTR (_NL_WALT_DIGITS)[0] == L'\0')
+    return result;
+
+  __libc_rwlock_wrlock (__libc_setlocale_lock);
+
+  if (current->private.time == NULL
+      || ! current->private.time->alt_digits_initialized)
+    _nl_init_alt_digit (current);
+
+  if (current->private.time != NULL &&
+      current->private.time->alt_digits != NULL)
+    /* Matching is not unambiguous.  The alternative digits could be like
+       I, II, III, ... and the first one is a substring of the second
+       and third.  Therefore we must keep on searching until we found
+       the longest possible match.  Note that this is not specified in
+       the standard.  */
+    for (cnt = 0; cnt < 100; ++cnt)
+      {
+	const char *const dig = current->private.time->alt_digits[cnt];
+	size_t len = strlen (dig);
+
+	if (len > maxlen && strncmp (dig, str, len) == 0)
+	  {
+	    maxlen = len;
+	    result = (int) cnt;
+	  }
+      }
+
+  __libc_rwlock_unlock (__libc_setlocale_lock);
+
+  if (result != -1)
+    *strp += maxlen;
+
+  return result;
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/asctime.c b/ap/libc/glibc/glibc-2.23/time/asctime.c
new file mode 100644
index 0000000..763f12e
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/asctime.c
@@ -0,0 +1,89 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "../locale/localeinfo.h"
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <time.h>
+
+/* This is defined in locale/C-time.c in the GNU libc.  */
+extern const struct __locale_data _nl_C_LC_TIME attribute_hidden;
+#define ab_day_name(DAY) (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABDAY_1)+(DAY)].string)
+#define ab_month_name(MON) (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABMON_1)+(MON)].string)
+
+static const char format[] = "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n";
+static char result[		 3+1+ 3+1+20+1+20+1+20+1+20+1+20+1 + 1];
+
+
+static char *
+asctime_internal (const struct tm *tp, char *buf, size_t buflen)
+{
+  if (tp == NULL)
+    {
+      __set_errno (EINVAL);
+      return NULL;
+    }
+
+  /* We limit the size of the year which can be printed.  Using the %d
+     format specifier used the addition of 1900 would overflow the
+     number and a negative vaue is printed.  For some architectures we
+     could in theory use %ld or an evern larger integer format but
+     this would mean the output needs more space.  This would not be a
+     problem if the 'asctime_r' interface would be defined sanely and
+     a buffer size would be passed.  */
+  if (__glibc_unlikely (tp->tm_year > INT_MAX - 1900))
+    {
+    eoverflow:
+      __set_errno (EOVERFLOW);
+      return NULL;
+    }
+
+  int n = __snprintf (buf, buflen, format,
+		      (tp->tm_wday < 0 || tp->tm_wday >= 7 ?
+		       "???" : ab_day_name (tp->tm_wday)),
+		      (tp->tm_mon < 0 || tp->tm_mon >= 12 ?
+		       "???" : ab_month_name (tp->tm_mon)),
+		      tp->tm_mday, tp->tm_hour, tp->tm_min,
+		      tp->tm_sec, 1900 + tp->tm_year);
+  if (n < 0)
+    return NULL;
+  if (n >= buflen)
+    goto eoverflow;
+
+  return buf;
+}
+
+
+/* Like asctime, but write result to the user supplied buffer.  The
+   buffer is only guaranteed to be 26 bytes in length.  */
+char *
+__asctime_r (const struct tm *tp, char *buf)
+{
+  return asctime_internal (tp, buf, 26);
+}
+weak_alias (__asctime_r, asctime_r)
+
+
+/* Returns a string of the form "Day Mon dd hh:mm:ss yyyy\n"
+   which is the representation of TP in that form.  */
+char *
+asctime (const struct tm *tp)
+{
+  return asctime_internal (tp, result, sizeof (result));
+}
+libc_hidden_def (asctime)
diff --git a/ap/libc/glibc/glibc-2.23/time/bug-asctime.c b/ap/libc/glibc/glibc-2.23/time/bug-asctime.c
new file mode 100644
index 0000000..0b04b47
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/bug-asctime.c
@@ -0,0 +1,33 @@
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <time.h>
+
+
+static int
+do_test (void)
+{
+  int result = 0;
+  time_t t = time (NULL);
+  struct tm *tp = localtime (&t);
+  tp->tm_year = INT_MAX;
+  errno = 0;
+  char *s = asctime (tp);
+  if (s != NULL || errno != EOVERFLOW)
+    {
+      puts ("asctime did not fail correctly");
+      result = 1;
+    }
+  char buf[1000];
+  errno = 0;
+  s = asctime_r (tp, buf);
+  if (s != NULL || errno != EOVERFLOW)
+    {
+      puts ("asctime_r did not fail correctly");
+      result = 1;
+    }
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/bug-asctime_r.c b/ap/libc/glibc/glibc-2.23/time/bug-asctime_r.c
new file mode 100644
index 0000000..86651ef
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/bug-asctime_r.c
@@ -0,0 +1,32 @@
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <time.h>
+
+
+static int
+do_test (void)
+{
+  int result = 0;
+  time_t t = time (NULL);
+  struct tm *tp = localtime (&t);
+  tp->tm_year = 10000 - 1900;
+  char buf[1000];
+  errno = 0;
+  buf[26] = '\xff';
+  char *s = asctime_r (tp, buf);
+  if (s != NULL || errno != EOVERFLOW)
+    {
+      puts ("asctime_r did not fail correctly");
+      result = 1;
+    }
+  if (buf[26] != '\xff')
+    {
+      puts ("asctime_r overwrote 27th byte in buffer");
+      result = 1;
+    }
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/bug-getdate1.c b/ap/libc/glibc/glibc-2.23/time/bug-getdate1.c
new file mode 100644
index 0000000..3d68cf2
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/bug-getdate1.c
@@ -0,0 +1,146 @@
+/* BZ #5451 */
+#include <time.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static char *templ_filename;
+
+// Writes template given as parameter to file,
+// specified as the argument
+static void
+output_to_template_file (const char *str)
+{
+  FILE *fd = fopen (templ_filename, "w");
+  if (fd == NULL)
+    {
+      printf ("Can not open file for writing\n");
+      exit (1);
+    }
+
+  fprintf (fd, "%s\n", str);
+  fclose (fd);
+}
+
+// Calls getdate() function with specified parameter,
+// specified as the argument, also checks the contents of
+// file with template and prints the result
+static int
+process_getdate_on (const char *str)
+{
+  struct tm *res;
+  char templ[1000];
+  FILE *fd = fopen (templ_filename, "r");
+
+  if (fd == NULL)
+    {
+      printf ("Can not open file for reading\n");
+      exit (1);
+    }
+
+  if (fgets (templ, 1000, fd) == NULL)
+    {
+      printf ("Can not read file\n");
+      exit (1);
+    }
+  fclose (fd);
+
+  res = getdate (str);
+  if (res == NULL)
+    {
+      printf ("Failed on getdate(\"%s\"), template is: %s", str, templ);
+      printf ("Error number: %d\n\n", getdate_err);
+      return 1;
+    }
+  printf ("Success on getdate(\"%s\"), template is: %s\n", str, templ);
+  printf ("Result is\n");
+  printf ("Seconds: %d\n", res->tm_sec);
+  printf ("Minutes: %d\n", res->tm_min);
+  printf ("Hour: %d\n", res->tm_hour);
+  printf ("Day of month: %d\n", res->tm_mday);
+  printf ("Month of year: %d\n", res->tm_mon);
+  printf ("Years since 1900: %d\n", res->tm_year);
+  printf ("Day of week: %d\n", res->tm_wday);
+  printf ("Day of year: %d\n", res->tm_yday);
+  printf ("Daylight Savings flag: %d\n\n", res->tm_isdst);
+  return 0;
+}
+
+static int
+do_test (int argc, char *argv[])
+{
+
+  templ_filename = argv[1];
+
+  setenv ("DATEMSK", templ_filename, 1);
+
+  /*
+   * The following 4 testcases reproduce the problem:
+   * 1. Templates "%S" and "%M" are not processed,
+   *    when used without "%H" template
+   */
+  int res = 0;
+  output_to_template_file ("%M");
+  res |= process_getdate_on ("1");
+
+  output_to_template_file ("%M %H");
+  res |= process_getdate_on ("1 2");
+
+  output_to_template_file ("%S");
+  res |= process_getdate_on ("1");
+
+  output_to_template_file ("%S %H");
+  res |= process_getdate_on ("1 2");
+
+  /*
+   * The following 9 testcases reproduce the problem:
+   * 2. Templates "%Y", "%y", "%d", "%C", "%C %y"
+   *    are not processed separately
+   */
+  output_to_template_file ("%Y");
+  process_getdate_on ("2001");
+
+  output_to_template_file ("%Y %m");
+  res |= process_getdate_on ("2001 3");
+
+  output_to_template_file ("%y");
+  res |= process_getdate_on ("70");
+
+  output_to_template_file ("%y %m");
+  res |= process_getdate_on ("70 3");
+
+  output_to_template_file ("%d");
+  res |= process_getdate_on ("06");
+
+  output_to_template_file ("%d %m");
+  res |= process_getdate_on ("25 3");
+
+  output_to_template_file ("%C");
+  res |= process_getdate_on ("20");
+
+  output_to_template_file ("%C %y %m");
+  res |= process_getdate_on ("20 3 2");
+
+  output_to_template_file ("%C %y");
+  res |= process_getdate_on ("20 5");
+
+  /*
+   * The following testcase reproduces the problem:
+   * 3. When template is "%Y %m", day of month is not set
+   *    to 1 as standard requires
+   */
+  output_to_template_file ("%Y %m");
+  res |= process_getdate_on ("2008 3");
+
+  return res;
+}
+
+#define PREPARE(argc, argv) \
+  if (argc < 2)								\
+    {									\
+      puts ("Command line: progname template_filename_full_path");	\
+      exit (1);								\
+    }									\
+  add_temp_file (argv[1])
+
+#define TEST_FUNCTION do_test (argc, argv)
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/bug-mktime1.c b/ap/libc/glibc/glibc-2.23/time/bug-mktime1.c
new file mode 100644
index 0000000..e071273
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/bug-mktime1.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <time.h>
+
+
+static int
+do_test (void)
+{
+  struct tm t2 = { 0, 0, 0, 1, 1, 2050 - 1900, 1, 1, 1 };
+  time_t tt2 = mktime (&t2);
+  printf ("%ld\n", (long int) tt2);
+  if (sizeof (time_t) == 4 && tt2 != -1)
+    return 1;
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/clock.c b/ap/libc/glibc/glibc-2.23/time/clock.c
new file mode 100644
index 0000000..261abc6
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/clock.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/times.h>
+#include <time.h>
+#include <errno.h>
+
+/* Return the time used by the program so far (user time + system time).  */
+clock_t
+clock (void)
+{
+  __set_errno (ENOSYS);
+  return (clock_t) -1;
+}
+
+stub_warning (clock)
diff --git a/ap/libc/glibc/glibc-2.23/time/clocktest.c b/ap/libc/glibc/glibc-2.23/time/clocktest.c
new file mode 100644
index 0000000..13b7420
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/clocktest.c
@@ -0,0 +1,36 @@
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+
+volatile int gotit = 0;
+
+static void
+alarm_handler (int signal)
+{
+    gotit = 1;
+}
+
+
+int
+main (int argc, char ** argv)
+{
+  clock_t start, stop;
+
+  if (signal(SIGALRM, alarm_handler) == SIG_ERR)
+    {
+      perror ("signal");
+      exit (1);
+    }
+  alarm(1);
+  start = clock ();
+  while (!gotit);
+  stop = clock ();
+
+  printf ("%jd clock ticks per second (start=%jd,stop=%jd)\n",
+	  (intmax_t) (stop - start), (intmax_t) start, (intmax_t) stop);
+  printf ("CLOCKS_PER_SEC=%jd, sysconf(_SC_CLK_TCK)=%ld\n",
+	  (intmax_t) CLOCKS_PER_SEC, sysconf(_SC_CLK_TCK));
+  return 0;
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/ctime.c b/ap/libc/glibc/glibc-2.23/time/ctime.c
new file mode 100644
index 0000000..451d7b9
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/ctime.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+
+/* Return a string as returned by asctime which
+   is the representation of *T in that form.  */
+char *
+ctime (const time_t *t)
+{
+  /* The C Standard says ctime (t) is equivalent to asctime (localtime (t)).
+     In particular, ctime and asctime must yield the same pointer.  */
+  return asctime (localtime (t));
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/ctime_r.c b/ap/libc/glibc/glibc-2.23/time/ctime_r.c
new file mode 100644
index 0000000..0fcf9d8
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/ctime_r.c
@@ -0,0 +1,29 @@
+/* Return in BUF representation of time T in form of asctime
+   Copyright (C) 1996-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+
+/* Return a string as returned by asctime which is the representation
+   of *T in that form.  Reentrant version.  */
+char *
+ctime_r (const time_t *t, char *buf)
+{
+  struct tm tm;
+  return __asctime_r (__localtime_r (t, &tm), buf);
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/datemsk b/ap/libc/glibc/glibc-2.23/time/datemsk
new file mode 100644
index 0000000..3dc4d41
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/datemsk
@@ -0,0 +1,2 @@
+%H:%M:%S %F
+%d-%m-%Y %T
diff --git a/ap/libc/glibc/glibc-2.23/time/difftime.c b/ap/libc/glibc/glibc-2.23/time/difftime.c
new file mode 100644
index 0000000..9885079
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/difftime.c
@@ -0,0 +1,121 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert <eggert@cs.ucla.edu>.  */
+
+#include <time.h>
+
+#include <limits.h>
+#include <float.h>
+#include <stdint.h>
+
+#define TYPE_BITS(type) (sizeof (type) * CHAR_BIT)
+#define TYPE_FLOATING(type) ((type) 0.5 == 0.5)
+#define TYPE_SIGNED(type) ((type) -1 < 0)
+
+/* Return the difference between TIME1 and TIME0, where TIME0 <= TIME1.
+   time_t is known to be an integer type.  */
+
+static double
+subtract (time_t time1, time_t time0)
+{
+  if (! TYPE_SIGNED (time_t))
+    return time1 - time0;
+  else
+    {
+      /* Optimize the common special cases where time_t
+	 can be converted to uintmax_t without losing information.  */
+      uintmax_t dt = (uintmax_t) time1 - (uintmax_t) time0;
+      double delta = dt;
+
+      if (UINTMAX_MAX / 2 < INTMAX_MAX)
+	{
+	  /* This is a rare host where uintmax_t has padding bits, and possibly
+	     information was lost when converting time_t to uintmax_t.
+	     Check for overflow by comparing dt/2 to (time1/2 - time0/2).
+	     Overflow occurred if they differ by more than a small slop.
+	     Thanks to Clive D.W. Feather for detailed technical advice about
+	     hosts with padding bits.
+
+	     In the following code the "h" prefix means half.  By range
+	     analysis, we have:
+
+                  -0.5 <= ht1 - 0.5*time1 <= 0.5
+                  -0.5 <= ht0 - 0.5*time0 <= 0.5
+                  -1.0 <= dht - 0.5*(time1 - time0) <= 1.0
+
+             If overflow has not occurred, we also have:
+
+                  -0.5 <= hdt - 0.5*(time1 - time0) <= 0
+                  -1.0 <= dht - hdt <= 1.5
+
+             and since dht - hdt is an integer, we also have:
+
+                  -1 <= dht - hdt <= 1
+
+             or equivalently:
+
+                  0 <= dht - hdt + 1 <= 2
+
+             In the above analysis, all the operators have their exact
+             mathematical semantics, not C semantics.  However, dht - hdt +
+             1 is unsigned in C, so it need not be compared to zero.  */
+
+	  uintmax_t hdt = dt / 2;
+	  time_t ht1 = time1 / 2;
+	  time_t ht0 = time0 / 2;
+	  time_t dht = ht1 - ht0;
+
+	  if (2 < dht - hdt + 1)
+	    {
+	      /* Repair delta overflow.
+
+		 The following expression contains a second rounding,
+		 so the result may not be the closest to the true answer.
+		 This problem occurs only with very large differences.
+		 It's too painful to fix this portably.  */
+
+	      delta = dt + 2.0L * (UINTMAX_MAX - UINTMAX_MAX / 2);
+	    }
+	}
+
+      return delta;
+    }
+}
+
+/* Return the difference between TIME1 and TIME0.  */
+double
+__difftime (time_t time1, time_t time0)
+{
+  /* Convert to double and then subtract if no double-rounding error could
+     result.  */
+
+  if (TYPE_BITS (time_t) <= DBL_MANT_DIG
+      || (TYPE_FLOATING (time_t) && sizeof (time_t) < sizeof (long double)))
+    return (double) time1 - (double) time0;
+
+  /* Likewise for long double.  */
+
+  if (TYPE_BITS (time_t) <= LDBL_MANT_DIG || TYPE_FLOATING (time_t))
+    return (long double) time1 - (long double) time0;
+
+  /* Subtract the smaller integer from the larger, convert the difference to
+     double, and then negate if needed.  */
+
+  return time1 < time0 ? - subtract (time0, time1) : subtract (time1, time0);
+}
+strong_alias (__difftime, difftime)
diff --git a/ap/libc/glibc/glibc-2.23/time/dysize.c b/ap/libc/glibc/glibc-2.23/time/dysize.c
new file mode 100644
index 0000000..77f67a7
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/dysize.c
@@ -0,0 +1,24 @@
+/* Copyright (C) 1994-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+
+int
+dysize (int year)
+{
+  return __isleap (year) ? 366 : 365;
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/era.c b/ap/libc/glibc/glibc-2.23/time/era.c
new file mode 100644
index 0000000..8c99274
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/era.c
@@ -0,0 +1,177 @@
+/* Helper functions used by strftime/strptime to handle locale-specific "eras".
+   Copyright (C) 1995-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "../locale/localeinfo.h"
+#include <libc-lock.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include <string.h>
+#include <stdint.h>
+
+/* Some of the functions here must not be used while setlocale is called.  */
+__libc_rwlock_define (extern, __libc_setlocale_lock attribute_hidden)
+
+#define CURRENT(item)		(current->values[_NL_ITEM_INDEX (item)].string)
+#define CURRENT_WORD(item)	(current->values[_NL_ITEM_INDEX (item)].word)
+
+#define ERA_DATE_CMP(a, b) \
+  (a[0] < b[0] || (a[0] == b[0] && (a[1] < b[1]				      \
+				    || (a[1] == b[1] && a[2] <= b[2]))))
+
+/* Look up the era information in CURRENT's locale strings and
+   cache it in CURRENT->private.  */
+static void internal_function
+_nl_init_era_entries (struct __locale_data *current)
+{
+  size_t cnt;
+  struct lc_time_data *data;
+
+  /* Avoid touching CURRENT if there is no data at all, for _nl_C_LC_TIME.  */
+  if (CURRENT_WORD (_NL_TIME_ERA_NUM_ENTRIES) == 0)
+    return;
+
+  __libc_rwlock_wrlock (__libc_setlocale_lock);
+
+  if (current->private.time == NULL)
+    {
+      current->private.time = malloc (sizeof *current->private.time);
+      if (current->private.time == NULL)
+	goto out;
+      memset (current->private.time, 0, sizeof *current->private.time);
+      current->private.cleanup = &_nl_cleanup_time;
+    }
+  data = current->private.time;
+
+  if (! data->era_initialized)
+    {
+      size_t new_num_eras = CURRENT_WORD (_NL_TIME_ERA_NUM_ENTRIES);
+      if (new_num_eras == 0)
+	{
+	  if (data->eras != NULL)
+	    {
+	      free (data->eras);
+	      data->eras = NULL;
+	    }
+	}
+      else
+	{
+	  struct era_entry *new_eras = data->eras;
+
+	  if (data->num_eras != new_num_eras)
+	    new_eras =
+	      (struct era_entry *) realloc (data->eras,
+					    new_num_eras
+					    * sizeof (struct era_entry));
+	  if (new_eras == NULL)
+	    {
+	      free (data->eras);
+	      data->num_eras = 0;
+	      data->eras = NULL;
+	    }
+	  else
+	    {
+	      const char *ptr = CURRENT (_NL_TIME_ERA_ENTRIES);
+	      data->num_eras = new_num_eras;
+	      data->eras = new_eras;
+
+	      for (cnt = 0; cnt < new_num_eras; ++cnt)
+		{
+		  const char *base_ptr = ptr;
+		  memcpy ((void *) (new_eras + cnt), (const void *) ptr,
+			  sizeof (uint32_t) * 8);
+
+		  if (ERA_DATE_CMP(new_eras[cnt].start_date,
+				   new_eras[cnt].stop_date))
+		    if (new_eras[cnt].direction == (uint32_t) '+')
+		      new_eras[cnt].absolute_direction = 1;
+		    else
+		      new_eras[cnt].absolute_direction = -1;
+		  else
+		    if (new_eras[cnt].direction == (uint32_t) '+')
+		      new_eras[cnt].absolute_direction = -1;
+		    else
+		      new_eras[cnt].absolute_direction = 1;
+
+		  /* Skip numeric values.  */
+		  ptr += sizeof (uint32_t) * 8;
+
+		  /* Set and skip era name.  */
+		  new_eras[cnt].era_name = ptr;
+		  ptr = strchr (ptr, '\0') + 1;
+
+		  /* Set and skip era format.  */
+		  new_eras[cnt].era_format = ptr;
+		  ptr = strchr (ptr, '\0') + 1;
+
+		  ptr += 3 - (((ptr - (const char *) base_ptr) + 3) & 3);
+
+		  /* Set and skip wide era name.  */
+		  new_eras[cnt].era_wname = (wchar_t *) ptr;
+		  ptr = (char *) (__wcschr ((wchar_t *) ptr, L'\0') + 1);
+
+		  /* Set and skip wide era format.  */
+		  new_eras[cnt].era_wformat = (wchar_t *) ptr;
+		  ptr = (char *) (__wcschr ((wchar_t *) ptr, L'\0') + 1);
+		}
+	    }
+	}
+
+      data->era_initialized = 1;
+    }
+
+ out:
+  __libc_rwlock_unlock (__libc_setlocale_lock);
+}
+
+struct era_entry *
+internal_function
+_nl_get_era_entry (const struct tm *tp, struct __locale_data *current)
+{
+  if (current->private.time == NULL || !current->private.time->era_initialized)
+    _nl_init_era_entries (current);
+
+  if (current->private.time != NULL)
+    {
+      /* Now compare date with the available eras.  */
+      const int32_t tdate[3] = { tp->tm_year, tp->tm_mon, tp->tm_mday };
+      size_t cnt;
+      for (cnt = 0; cnt < current->private.time->num_eras; ++cnt)
+	if ((ERA_DATE_CMP (current->private.time->eras[cnt].start_date, tdate)
+	     && ERA_DATE_CMP (tdate,
+			      current->private.time->eras[cnt].stop_date))
+	    || (ERA_DATE_CMP (current->private.time->eras[cnt].stop_date,
+			      tdate)
+		&& ERA_DATE_CMP (tdate,
+				 current->private.time->eras[cnt].start_date)))
+	  return &current->private.time->eras[cnt];
+    }
+
+  return NULL;
+}
+
+
+struct era_entry *
+internal_function
+_nl_select_era_entry (int cnt, struct __locale_data *current)
+{
+  if (current->private.time == NULL || !current->private.time->era_initialized)
+    _nl_init_era_entries (current);
+
+  return (current->private.time == NULL
+	  ? NULL : &current->private.time->eras[cnt]);
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/ftime.c b/ap/libc/glibc/glibc-2.23/time/ftime.c
new file mode 100644
index 0000000..f816fbe
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/ftime.c
@@ -0,0 +1,41 @@
+/* Copyright (C) 1994-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <time.h>
+#include <sys/timeb.h>
+
+int
+ftime (struct timeb *timebuf)
+{
+  int save = errno;
+  struct tm tp;
+
+  __set_errno (0);
+  if (time (&timebuf->time) == (time_t) -1 && errno != 0)
+    return -1;
+  timebuf->millitm = 0;
+
+  if (__localtime_r (&timebuf->time, &tp) == NULL)
+    return -1;
+
+  timebuf->timezone = tp.tm_gmtoff / 60;
+  timebuf->dstflag = tp.tm_isdst;
+
+  __set_errno (save);
+  return 0;
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/getdate.c b/ap/libc/glibc/glibc-2.23/time/getdate.c
new file mode 100644
index 0000000..52a0d9e
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/getdate.c
@@ -0,0 +1,312 @@
+/* Convert a string representation of time to a time value.
+   Copyright (C) 1997-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <ctype.h>
+#include <alloca.h>
+
+#define TM_YEAR_BASE 1900
+
+
+/* Prototypes for local functions.  */
+static int first_wday (int year, int mon, int wday);
+static int check_mday (int year, int mon, int mday);
+
+
+/* Set to one of the following values to indicate an error.
+     1  the DATEMSK environment variable is null or undefined,
+     2  the template file cannot be opened for reading,
+     3  failed to get file status information,
+     4  the template file is not a regular file,
+     5  an error is encountered while reading the template file,
+     6  memory allication failed (not enough memory available),
+     7  there is no line in the template that matches the input,
+     8  invalid input specification Example: February 31 or a time is
+	specified that can not be represented in a time_t (representing
+	the time in seconds since 00:00:00 UTC, January 1, 1970) */
+int getdate_err;
+
+
+/* Returns the first weekday WDAY of month MON in the year YEAR.  */
+static int
+first_wday (int year, int mon, int wday)
+{
+  struct tm tm;
+
+  if (wday == INT_MIN)
+    return 1;
+
+  memset (&tm, 0, sizeof (struct tm));
+  tm.tm_year = year;
+  tm.tm_mon = mon;
+  tm.tm_mday = 1;
+  mktime (&tm);
+
+  return (1 + (wday - tm.tm_wday + 7) % 7);
+}
+
+
+/* Returns 1 if MDAY is a valid day of the month in month MON of year
+   YEAR, and 0 if it is not.  */
+static int
+check_mday (int year, int mon, int mday)
+{
+  switch (mon)
+    {
+    case 0:
+    case 2:
+    case 4:
+    case 6:
+    case 7:
+    case 9:
+    case 11:
+      if (mday >= 1 && mday <= 31)
+	return 1;
+      break;
+    case 3:
+    case 5:
+    case 8:
+    case 10:
+      if (mday >= 1 && mday <= 30)
+	return 1;
+      break;
+    case 1:
+      if (mday >= 1 && mday <= (__isleap (year) ? 29 : 28))
+	return 1;
+      break;
+    }
+
+  return 0;
+}
+
+
+int
+__getdate_r (const char *string, struct tm *tp)
+{
+  FILE *fp;
+  char *line;
+  size_t len;
+  char *datemsk;
+  char *result = NULL;
+  time_t timer;
+  struct tm tm;
+  struct stat64 st;
+  int mday_ok = 0;
+
+  datemsk = getenv ("DATEMSK");
+  if (datemsk == NULL || *datemsk == '\0')
+    return 1;
+
+  if (stat64 (datemsk, &st) < 0)
+    return 3;
+
+  if (!S_ISREG (st.st_mode))
+    return 4;
+
+  if (__access (datemsk, R_OK) < 0)
+    return 2;
+
+  /* Open the template file.  */
+  fp = fopen (datemsk, "rce");
+  if (fp == NULL)
+    return 2;
+
+  /* No threads reading this stream.  */
+  __fsetlocking (fp, FSETLOCKING_BYCALLER);
+
+  /* Skip leading whitespace.  */
+  while (isspace (*string))
+    string++;
+
+  size_t inlen, oldlen;
+
+  oldlen = inlen = strlen (string);
+
+  /* Skip trailing whitespace.  */
+  while (inlen > 0 && isspace (string[inlen - 1]))
+    inlen--;
+
+  char *instr = NULL;
+
+  if (inlen < oldlen)
+    {
+      bool using_malloc = false;
+
+      if (__libc_use_alloca (inlen + 1))
+	instr = alloca (inlen + 1);
+      else
+	{
+	  instr = malloc (inlen + 1);
+	  if (instr == NULL)
+	    {
+	      fclose (fp);
+	      return 6;
+	    }
+	  using_malloc = true;
+	}
+      memcpy (instr, string, inlen);
+      instr[inlen] = '\0';
+      string = instr;
+
+      if (!using_malloc)
+	instr = NULL;
+    }
+
+  line = NULL;
+  len = 0;
+  do
+    {
+      ssize_t n;
+
+      n = __getline (&line, &len, fp);
+      if (n < 0)
+	break;
+      if (line[n - 1] == '\n')
+	line[n - 1] = '\0';
+
+      /* Do the conversion.  */
+      tp->tm_year = tp->tm_mon = tp->tm_mday = tp->tm_wday = INT_MIN;
+      tp->tm_hour = tp->tm_sec = tp->tm_min = INT_MIN;
+      tp->tm_isdst = -1;
+      tp->tm_gmtoff = 0;
+      tp->tm_zone = NULL;
+      result = strptime (string, line, tp);
+      if (result && *result == '\0')
+	break;
+    }
+  while (!feof_unlocked (fp));
+
+  free (instr);
+
+  /* Free the buffer.  */
+  free (line);
+
+  /* Check for errors. */
+  if (ferror_unlocked (fp))
+    {
+      fclose (fp);
+      return 5;
+    }
+
+  /* Close template file.  */
+  fclose (fp);
+
+  if (result == NULL || *result != '\0')
+    return 7;
+
+  /* Get current time.  */
+  time (&timer);
+  __localtime_r (&timer, &tm);
+
+  /* If only the weekday is given, today is assumed if the given day
+     is equal to the current day and next week if it is less.  */
+  if (tp->tm_wday >= 0 && tp->tm_wday <= 6 && tp->tm_year == INT_MIN
+      && tp->tm_mon == INT_MIN && tp->tm_mday == INT_MIN)
+    {
+      tp->tm_year = tm.tm_year;
+      tp->tm_mon = tm.tm_mon;
+      tp->tm_mday = tm.tm_mday + (tp->tm_wday - tm.tm_wday + 7) % 7;
+      mday_ok = 1;
+    }
+
+  /* If only the month is given, the current month is assumed if the
+     given month is equal to the current month and next year if it is
+     less and no year is given (the first day of month is assumed if
+     no day is given.  */
+  if (tp->tm_mon >= 0 && tp->tm_mon <= 11 && tp->tm_mday == INT_MIN)
+    {
+      if (tp->tm_year == INT_MIN)
+	tp->tm_year = tm.tm_year + (((tp->tm_mon - tm.tm_mon) < 0) ? 1 : 0);
+      tp->tm_mday = first_wday (tp->tm_year, tp->tm_mon, tp->tm_wday);
+      mday_ok = 1;
+    }
+
+  /* If no hour, minute and second are given the current hour, minute
+     and second are assumed.  */
+  if (tp->tm_hour == INT_MIN && tp->tm_min == INT_MIN && tp->tm_sec == INT_MIN)
+    {
+      tp->tm_hour = tm.tm_hour;
+      tp->tm_min = tm.tm_min;
+      tp->tm_sec = tm.tm_sec;
+    }
+
+  /* Fill in the gaps.  */
+  if (tp->tm_hour == INT_MIN)
+    tp->tm_hour = 0;
+  if (tp->tm_min == INT_MIN)
+    tp->tm_min = 0;
+  if (tp->tm_sec == INT_MIN)
+    tp->tm_sec = 0;
+
+  /* If no date is given, today is assumed if the given hour is
+     greater than the current hour and tomorrow is assumed if
+     it is less.  */
+  if (tp->tm_hour >= 0 && tp->tm_hour <= 23
+      && tp->tm_mon == INT_MIN
+      && tp->tm_mday == INT_MIN && tp->tm_wday == INT_MIN)
+    {
+      tp->tm_mon = tm.tm_mon;
+      tp->tm_mday = tm.tm_mday + ((tp->tm_hour - tm.tm_hour) < 0 ? 1 : 0);
+      mday_ok = 1;
+    }
+
+  /* More fillers.  */
+  if (tp->tm_year == INT_MIN)
+    tp->tm_year = tm.tm_year;
+  if (tp->tm_mon == INT_MIN)
+    tp->tm_mon = tm.tm_mon;
+
+  /* Check if the day of month is within range, and if the time can be
+     represented in a time_t.  We make use of the fact that the mktime
+     call normalizes the struct tm.  */
+  if ((!mday_ok && !check_mday (TM_YEAR_BASE + tp->tm_year, tp->tm_mon,
+				tp->tm_mday))
+      || mktime (tp) == (time_t) -1)
+    return 8;
+
+  return 0;
+}
+#ifdef weak_alias
+weak_alias (__getdate_r, getdate_r)
+#endif
+
+
+struct tm *
+getdate (const char *string)
+{
+  /* Buffer returned by getdate.  */
+  static struct tm tmbuf;
+  int errval = __getdate_r (string, &tmbuf);
+
+  if (errval != 0)
+    {
+      getdate_err = errval;
+      return NULL;
+    }
+
+  return &tmbuf;
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/getitimer.c b/ap/libc/glibc/glibc-2.23/time/getitimer.c
new file mode 100644
index 0000000..ac1d0d8
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/getitimer.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stddef.h>
+#include <errno.h>
+#include <sys/time.h>
+
+/* Set *VALUE to the current setting of timer WHICH.
+   Return 0 on success, -1 on errors.  */
+int
+__getitimer (enum __itimer_which which, struct itimerval *value)
+{
+  if (value == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (getitimer)
+
+weak_alias (__getitimer, getitimer)
diff --git a/ap/libc/glibc/glibc-2.23/time/gettimeofday.c b/ap/libc/glibc/glibc-2.23/time/gettimeofday.c
new file mode 100644
index 0000000..87093c9
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/gettimeofday.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/time.h>
+
+/* Get the current time of day and timezone information,
+   putting it into *TV and *TZ.  If TZ is NULL, *TZ is not filled.
+   Returns 0 on success, -1 on errors.  */
+int
+__gettimeofday (struct timeval *tv, struct timezone *tz)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__gettimeofday)
+weak_alias (__gettimeofday, gettimeofday)
+libc_hidden_weak (gettimeofday)
+
+stub_warning (gettimeofday)
diff --git a/ap/libc/glibc/glibc-2.23/time/gmtime.c b/ap/libc/glibc/glibc-2.23/time/gmtime.c
new file mode 100644
index 0000000..b3b5d0d
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/gmtime.c
@@ -0,0 +1,37 @@
+/* Convert `time_t' to `struct tm' in UTC.
+   Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+
+/* Return the `struct tm' representation of *T in UTC,
+   using *TP to store the result.  */
+struct tm *
+__gmtime_r (const time_t *t, struct tm *tp)
+{
+  return __tz_convert (t, 0, tp);
+}
+libc_hidden_def (__gmtime_r)
+weak_alias (__gmtime_r, gmtime_r)
+
+
+/* Return the `struct tm' representation of *T in UTC.	*/
+struct tm *
+gmtime (const time_t *t)
+{
+  return __tz_convert (t, 0, &_tmbuf);
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/lc-time-cleanup.c b/ap/libc/glibc/glibc-2.23/time/lc-time-cleanup.c
new file mode 100644
index 0000000..c909175
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/lc-time-cleanup.c
@@ -0,0 +1,37 @@
+/* Cleanup code for data structures kept by strftime/strptime helper functions.
+   Copyright (C) 2002-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "../locale/localeinfo.h"
+#include <stdlib.h>
+
+void internal_function
+_nl_cleanup_time (struct __locale_data *locale)
+{
+  struct lc_time_data *const data = locale->private.time;
+  if (data != NULL)
+    {
+      locale->private.time = NULL;
+      locale->private.cleanup = NULL;
+
+      free (data->eras);
+      free (data->alt_digits);
+      free (data->walt_digits);
+
+      free (data);
+    }
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/localtime.c b/ap/libc/glibc/glibc-2.23/time/localtime.c
new file mode 100644
index 0000000..8ec40cf
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/localtime.c
@@ -0,0 +1,41 @@
+/* Convert `time_t' to `struct tm' in local time zone.
+   Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+
+/* The C Standard says that localtime and gmtime return the same pointer.  */
+struct tm _tmbuf;
+
+
+/* Return the `struct tm' representation of *T in local time,
+   using *TP to store the result.  */
+struct tm *
+__localtime_r (const time_t *t, struct tm *tp)
+{
+  return __tz_convert (t, 1, tp);
+}
+weak_alias (__localtime_r, localtime_r)
+
+
+/* Return the `struct tm' representation of *T in local time.  */
+struct tm *
+localtime (const time_t *t)
+{
+  return __tz_convert (t, 1, &_tmbuf);
+}
+libc_hidden_def (localtime)
diff --git a/ap/libc/glibc/glibc-2.23/time/mktime.c b/ap/libc/glibc/glibc-2.23/time/mktime.c
new file mode 100644
index 0000000..bc7ed56
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/mktime.c
@@ -0,0 +1,741 @@
+/* Convert a 'struct tm' to a time_t value.
+   Copyright (C) 1993-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Paul Eggert <eggert@twinsun.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Define this to have a standalone program to test this implementation of
+   mktime.  */
+/* #define DEBUG_MKTIME 1 */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+/* Assume that leap seconds are possible, unless told otherwise.
+   If the host has a 'zic' command with a '-L leapsecondfilename' option,
+   then it supports leap seconds; otherwise it probably doesn't.  */
+#ifndef LEAP_SECONDS_POSSIBLE
+# define LEAP_SECONDS_POSSIBLE 1
+#endif
+
+#include <time.h>
+
+#include <limits.h>
+
+#include <string.h>		/* For the real memcpy prototype.  */
+
+#if defined DEBUG_MKTIME && DEBUG_MKTIME
+# include <stdio.h>
+# include <stdlib.h>
+/* Make it work even if the system's libc has its own mktime routine.  */
+# undef mktime
+# define mktime my_mktime
+#endif /* DEBUG_MKTIME */
+
+/* Some of the code in this file assumes that signed integer overflow
+   silently wraps around.  This assumption can't easily be programmed
+   around, nor can it be checked for portably at compile-time or
+   easily eliminated at run-time.
+
+   Define WRAPV to 1 if the assumption is valid and if
+     #pragma GCC optimize ("wrapv")
+   does not trigger GCC bug 51793
+   <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51793>.
+   Otherwise, define it to 0; this forces the use of slower code that,
+   while not guaranteed by the C Standard, works on all production
+   platforms that we know about.  */
+#ifndef WRAPV
+# if (((__GNUC__ == 4 && 4 <= __GNUC_MINOR__) || 4 < __GNUC__) \
+      && defined __GLIBC__)
+#  pragma GCC optimize ("wrapv")
+#  define WRAPV 1
+# else
+#  define WRAPV 0
+# endif
+#endif
+
+/* Verify a requirement at compile-time (unlike assert, which is runtime).  */
+#define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; }
+
+/* A signed type that is at least one bit wider than int.  */
+#if INT_MAX <= LONG_MAX / 2
+typedef long int long_int;
+#else
+typedef long long int long_int;
+#endif
+verify (long_int_is_wide_enough, INT_MAX == INT_MAX * (long_int) 2 / 2);
+
+/* Shift A right by B bits portably, by dividing A by 2**B and
+   truncating towards minus infinity.  A and B should be free of side
+   effects, and B should be in the range 0 <= B <= INT_BITS - 2, where
+   INT_BITS is the number of useful bits in an int.  GNU code can
+   assume that INT_BITS is at least 32.
+
+   ISO C99 says that A >> B is implementation-defined if A < 0.  Some
+   implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift
+   right in the usual way when A < 0, so SHR falls back on division if
+   ordinary A >> B doesn't seem to be the usual signed shift.  */
+#define SHR(a, b)                                               \
+  ((-1 >> 1 == -1                                               \
+    && (long_int) -1 >> 1 == -1                                 \
+    && ((time_t) -1 >> 1 == -1 || ! TYPE_SIGNED (time_t)))      \
+   ? (a) >> (b)                                                 \
+   : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0))
+
+/* The extra casts in the following macros work around compiler bugs,
+   e.g., in Cray C 5.0.3.0.  */
+
+/* True if the arithmetic type T is an integer type.  bool counts as
+   an integer.  */
+#define TYPE_IS_INTEGER(t) ((t) 1.5 == 1)
+
+/* True if negative values of the signed integer type T use two's
+   complement, or if T is an unsigned integer type.  */
+#define TYPE_TWOS_COMPLEMENT(t) ((t) ~ (t) 0 == (t) -1)
+
+/* True if the arithmetic type T is signed.  */
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+
+/* The maximum and minimum values for the integer type T.  These
+   macros have undefined behavior if T is signed and has padding bits.
+   If this is a problem for you, please let us know how to fix it for
+   your host.  */
+#define TYPE_MINIMUM(t) \
+  ((t) (! TYPE_SIGNED (t) \
+	? (t) 0 \
+	: ~ TYPE_MAXIMUM (t)))
+#define TYPE_MAXIMUM(t) \
+  ((t) (! TYPE_SIGNED (t) \
+	? (t) -1 \
+	: ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
+
+#ifndef TIME_T_MIN
+# define TIME_T_MIN TYPE_MINIMUM (time_t)
+#endif
+#ifndef TIME_T_MAX
+# define TIME_T_MAX TYPE_MAXIMUM (time_t)
+#endif
+#define TIME_T_MIDPOINT (SHR (TIME_T_MIN + TIME_T_MAX, 1) + 1)
+
+verify (time_t_is_integer, TYPE_IS_INTEGER (time_t));
+verify (twos_complement_arithmetic,
+	(TYPE_TWOS_COMPLEMENT (int)
+	 && TYPE_TWOS_COMPLEMENT (long_int)
+	 && TYPE_TWOS_COMPLEMENT (time_t)));
+
+#define EPOCH_YEAR 1970
+#define TM_YEAR_BASE 1900
+verify (base_year_is_a_multiple_of_100, TM_YEAR_BASE % 100 == 0);
+
+/* Return 1 if YEAR + TM_YEAR_BASE is a leap year.  */
+static int
+leapyear (long_int year)
+{
+  /* Don't add YEAR to TM_YEAR_BASE, as that might overflow.
+     Also, work even if YEAR is negative.  */
+  return
+    ((year & 3) == 0
+     && (year % 100 != 0
+	 || ((year / 100) & 3) == (- (TM_YEAR_BASE / 100) & 3)));
+}
+
+/* How many days come before each month (0-12).  */
+#ifndef _LIBC
+static
+#endif
+const unsigned short int __mon_yday[2][13] =
+  {
+    /* Normal years.  */
+    { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
+    /* Leap years.  */
+    { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
+  };
+
+
+#ifndef _LIBC
+/* Portable standalone applications should supply a <time.h> that
+   declares a POSIX-compliant localtime_r, for the benefit of older
+   implementations that lack localtime_r or have a nonstandard one.
+   See the gnulib time_r module for one way to implement this.  */
+# undef __localtime_r
+# define __localtime_r localtime_r
+# define __mktime_internal mktime_internal
+# include "mktime-internal.h"
+#endif
+
+/* Return 1 if the values A and B differ according to the rules for
+   tm_isdst: A and B differ if one is zero and the other positive.  */
+static int
+isdst_differ (int a, int b)
+{
+  return (!a != !b) && (0 <= a) && (0 <= b);
+}
+
+/* Return an integer value measuring (YEAR1-YDAY1 HOUR1:MIN1:SEC1) -
+   (YEAR0-YDAY0 HOUR0:MIN0:SEC0) in seconds, assuming that the clocks
+   were not adjusted between the time stamps.
+
+   The YEAR values uses the same numbering as TP->tm_year.  Values
+   need not be in the usual range.  However, YEAR1 must not be less
+   than 2 * INT_MIN or greater than 2 * INT_MAX.
+
+   The result may overflow.  It is the caller's responsibility to
+   detect overflow.  */
+
+static time_t
+ydhms_diff (long_int year1, long_int yday1, int hour1, int min1, int sec1,
+	    int year0, int yday0, int hour0, int min0, int sec0)
+{
+  verify (C99_integer_division, -1 / 2 == 0);
+
+  /* Compute intervening leap days correctly even if year is negative.
+     Take care to avoid integer overflow here.  */
+  int a4 = SHR (year1, 2) + SHR (TM_YEAR_BASE, 2) - ! (year1 & 3);
+  int b4 = SHR (year0, 2) + SHR (TM_YEAR_BASE, 2) - ! (year0 & 3);
+  int a100 = a4 / 25 - (a4 % 25 < 0);
+  int b100 = b4 / 25 - (b4 % 25 < 0);
+  int a400 = SHR (a100, 2);
+  int b400 = SHR (b100, 2);
+  int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
+
+  /* Compute the desired time in time_t precision.  Overflow might
+     occur here.  */
+  time_t tyear1 = year1;
+  time_t years = tyear1 - year0;
+  time_t days = 365 * years + yday1 - yday0 + intervening_leap_days;
+  time_t hours = 24 * days + hour1 - hour0;
+  time_t minutes = 60 * hours + min1 - min0;
+  time_t seconds = 60 * minutes + sec1 - sec0;
+  return seconds;
+}
+
+/* Return the average of A and B, even if A + B would overflow.  */
+static time_t
+time_t_avg (time_t a, time_t b)
+{
+  return SHR (a, 1) + SHR (b, 1) + (a & b & 1);
+}
+
+/* Return 1 if A + B does not overflow.  If time_t is unsigned and if
+   B's top bit is set, assume that the sum represents A - -B, and
+   return 1 if the subtraction does not wrap around.  */
+static int
+time_t_add_ok (time_t a, time_t b)
+{
+  if (! TYPE_SIGNED (time_t))
+    {
+      time_t sum = a + b;
+      return (sum < a) == (TIME_T_MIDPOINT <= b);
+    }
+  else if (WRAPV)
+    {
+      time_t sum = a + b;
+      return (sum < a) == (b < 0);
+    }
+  else
+    {
+      time_t avg = time_t_avg (a, b);
+      return TIME_T_MIN / 2 <= avg && avg <= TIME_T_MAX / 2;
+    }
+}
+
+/* Return 1 if A + B does not overflow.  */
+static int
+time_t_int_add_ok (time_t a, int b)
+{
+  verify (int_no_wider_than_time_t, INT_MAX <= TIME_T_MAX);
+  if (WRAPV)
+    {
+      time_t sum = a + b;
+      return (sum < a) == (b < 0);
+    }
+  else
+    {
+      int a_odd = a & 1;
+      time_t avg = SHR (a, 1) + (SHR (b, 1) + (a_odd & b));
+      return TIME_T_MIN / 2 <= avg && avg <= TIME_T_MAX / 2;
+    }
+}
+
+/* Return a time_t value corresponding to (YEAR-YDAY HOUR:MIN:SEC),
+   assuming that *T corresponds to *TP and that no clock adjustments
+   occurred between *TP and the desired time.
+   If TP is null, return a value not equal to *T; this avoids false matches.
+   If overflow occurs, yield the minimal or maximal value, except do not
+   yield a value equal to *T.  */
+static time_t
+guess_time_tm (long_int year, long_int yday, int hour, int min, int sec,
+	       const time_t *t, const struct tm *tp)
+{
+  if (tp)
+    {
+      time_t d = ydhms_diff (year, yday, hour, min, sec,
+			     tp->tm_year, tp->tm_yday,
+			     tp->tm_hour, tp->tm_min, tp->tm_sec);
+      if (time_t_add_ok (*t, d))
+	return *t + d;
+    }
+
+  /* Overflow occurred one way or another.  Return the nearest result
+     that is actually in range, except don't report a zero difference
+     if the actual difference is nonzero, as that would cause a false
+     match; and don't oscillate between two values, as that would
+     confuse the spring-forward gap detector.  */
+  return (*t < TIME_T_MIDPOINT
+	  ? (*t <= TIME_T_MIN + 1 ? *t + 1 : TIME_T_MIN)
+	  : (TIME_T_MAX - 1 <= *t ? *t - 1 : TIME_T_MAX));
+}
+
+/* Use CONVERT to convert *T to a broken down time in *TP.
+   If *T is out of range for conversion, adjust it so that
+   it is the nearest in-range value and then convert that.  */
+static struct tm *
+ranged_convert (struct tm *(*convert) (const time_t *, struct tm *),
+		time_t *t, struct tm *tp)
+{
+  struct tm *r = convert (t, tp);
+
+  if (!r && *t)
+    {
+      time_t bad = *t;
+      time_t ok = 0;
+
+      /* BAD is a known unconvertible time_t, and OK is a known good one.
+	 Use binary search to narrow the range between BAD and OK until
+	 they differ by 1.  */
+      while (bad != ok + (bad < 0 ? -1 : 1))
+	{
+	  time_t mid = *t = time_t_avg (ok, bad);
+	  r = convert (t, tp);
+	  if (r)
+	    ok = mid;
+	  else
+	    bad = mid;
+	}
+
+      if (!r && ok)
+	{
+	  /* The last conversion attempt failed;
+	     revert to the most recent successful attempt.  */
+	  *t = ok;
+	  r = convert (t, tp);
+	}
+    }
+
+  return r;
+}
+
+
+/* Convert *TP to a time_t value, inverting
+   the monotonic and mostly-unit-linear conversion function CONVERT.
+   Use *OFFSET to keep track of a guess at the offset of the result,
+   compared to what the result would be for UTC without leap seconds.
+   If *OFFSET's guess is correct, only one CONVERT call is needed.
+   This function is external because it is used also by timegm.c.  */
+time_t
+__mktime_internal (struct tm *tp,
+		   struct tm *(*convert) (const time_t *, struct tm *),
+		   time_t *offset)
+{
+  time_t t, gt, t0, t1, t2;
+  struct tm tm;
+
+  /* The maximum number of probes (calls to CONVERT) should be enough
+     to handle any combinations of time zone rule changes, solar time,
+     leap seconds, and oscillations around a spring-forward gap.
+     POSIX.1 prohibits leap seconds, but some hosts have them anyway.  */
+  int remaining_probes = 6;
+
+  /* Time requested.  Copy it in case CONVERT modifies *TP; this can
+     occur if TP is localtime's returned value and CONVERT is localtime.  */
+  int sec = tp->tm_sec;
+  int min = tp->tm_min;
+  int hour = tp->tm_hour;
+  int mday = tp->tm_mday;
+  int mon = tp->tm_mon;
+  int year_requested = tp->tm_year;
+  int isdst = tp->tm_isdst;
+
+  /* 1 if the previous probe was DST.  */
+  int dst2;
+
+  /* Ensure that mon is in range, and set year accordingly.  */
+  int mon_remainder = mon % 12;
+  int negative_mon_remainder = mon_remainder < 0;
+  int mon_years = mon / 12 - negative_mon_remainder;
+  long_int lyear_requested = year_requested;
+  long_int year = lyear_requested + mon_years;
+
+  /* The other values need not be in range:
+     the remaining code handles minor overflows correctly,
+     assuming int and time_t arithmetic wraps around.
+     Major overflows are caught at the end.  */
+
+  /* Calculate day of year from year, month, and day of month.
+     The result need not be in range.  */
+  int mon_yday = ((__mon_yday[leapyear (year)]
+		   [mon_remainder + 12 * negative_mon_remainder])
+		  - 1);
+  long_int lmday = mday;
+  long_int yday = mon_yday + lmday;
+
+  time_t guessed_offset = *offset;
+
+  int sec_requested = sec;
+
+  if (LEAP_SECONDS_POSSIBLE)
+    {
+      /* Handle out-of-range seconds specially,
+	 since ydhms_tm_diff assumes every minute has 60 seconds.  */
+      if (sec < 0)
+	sec = 0;
+      if (59 < sec)
+	sec = 59;
+    }
+
+  /* Invert CONVERT by probing.  First assume the same offset as last
+     time.  */
+
+  t0 = ydhms_diff (year, yday, hour, min, sec,
+		   EPOCH_YEAR - TM_YEAR_BASE, 0, 0, 0, - guessed_offset);
+
+  if (TIME_T_MAX / INT_MAX / 366 / 24 / 60 / 60 < 3)
+    {
+      /* time_t isn't large enough to rule out overflows, so check
+	 for major overflows.  A gross check suffices, since if t0
+	 has overflowed, it is off by a multiple of TIME_T_MAX -
+	 TIME_T_MIN + 1.  So ignore any component of the difference
+	 that is bounded by a small value.  */
+
+      /* Approximate log base 2 of the number of time units per
+	 biennium.  A biennium is 2 years; use this unit instead of
+	 years to avoid integer overflow.  For example, 2 average
+	 Gregorian years are 2 * 365.2425 * 24 * 60 * 60 seconds,
+	 which is 63113904 seconds, and rint (log2 (63113904)) is
+	 26.  */
+      int ALOG2_SECONDS_PER_BIENNIUM = 26;
+      int ALOG2_MINUTES_PER_BIENNIUM = 20;
+      int ALOG2_HOURS_PER_BIENNIUM = 14;
+      int ALOG2_DAYS_PER_BIENNIUM = 10;
+      int LOG2_YEARS_PER_BIENNIUM = 1;
+
+      int approx_requested_biennia =
+	(SHR (year_requested, LOG2_YEARS_PER_BIENNIUM)
+	 - SHR (EPOCH_YEAR - TM_YEAR_BASE, LOG2_YEARS_PER_BIENNIUM)
+	 + SHR (mday, ALOG2_DAYS_PER_BIENNIUM)
+	 + SHR (hour, ALOG2_HOURS_PER_BIENNIUM)
+	 + SHR (min, ALOG2_MINUTES_PER_BIENNIUM)
+	 + (LEAP_SECONDS_POSSIBLE
+	    ? 0
+	    : SHR (sec, ALOG2_SECONDS_PER_BIENNIUM)));
+
+      int approx_biennia = SHR (t0, ALOG2_SECONDS_PER_BIENNIUM);
+      int diff = approx_biennia - approx_requested_biennia;
+      int approx_abs_diff = diff < 0 ? -1 - diff : diff;
+
+      /* IRIX 4.0.5 cc miscalculates TIME_T_MIN / 3: it erroneously
+	 gives a positive value of 715827882.  Setting a variable
+	 first then doing math on it seems to work.
+	 (ghazi@caip.rutgers.edu) */
+      time_t time_t_max = TIME_T_MAX;
+      time_t time_t_min = TIME_T_MIN;
+      time_t overflow_threshold =
+	(time_t_max / 3 - time_t_min / 3) >> ALOG2_SECONDS_PER_BIENNIUM;
+
+      if (overflow_threshold < approx_abs_diff)
+	{
+	  /* Overflow occurred.  Try repairing it; this might work if
+	     the time zone offset is enough to undo the overflow.  */
+	  time_t repaired_t0 = -1 - t0;
+	  approx_biennia = SHR (repaired_t0, ALOG2_SECONDS_PER_BIENNIUM);
+	  diff = approx_biennia - approx_requested_biennia;
+	  approx_abs_diff = diff < 0 ? -1 - diff : diff;
+	  if (overflow_threshold < approx_abs_diff)
+	    return -1;
+	  guessed_offset += repaired_t0 - t0;
+	  t0 = repaired_t0;
+	}
+    }
+
+  /* Repeatedly use the error to improve the guess.  */
+
+  for (t = t1 = t2 = t0, dst2 = 0;
+       (gt = guess_time_tm (year, yday, hour, min, sec, &t,
+			    ranged_convert (convert, &t, &tm)),
+	t != gt);
+       t1 = t2, t2 = t, t = gt, dst2 = tm.tm_isdst != 0)
+    if (t == t1 && t != t2
+	&& (tm.tm_isdst < 0
+	    || (isdst < 0
+		? dst2 <= (tm.tm_isdst != 0)
+		: (isdst != 0) != (tm.tm_isdst != 0))))
+      /* We can't possibly find a match, as we are oscillating
+	 between two values.  The requested time probably falls
+	 within a spring-forward gap of size GT - T.  Follow the common
+	 practice in this case, which is to return a time that is GT - T
+	 away from the requested time, preferring a time whose
+	 tm_isdst differs from the requested value.  (If no tm_isdst
+	 was requested and only one of the two values has a nonzero
+	 tm_isdst, prefer that value.)  In practice, this is more
+	 useful than returning -1.  */
+      goto offset_found;
+    else if (--remaining_probes == 0)
+      return -1;
+
+  /* We have a match.  Check whether tm.tm_isdst has the requested
+     value, if any.  */
+  if (isdst_differ (isdst, tm.tm_isdst))
+    {
+      /* tm.tm_isdst has the wrong value.  Look for a neighboring
+	 time with the right value, and use its UTC offset.
+
+	 Heuristic: probe the adjacent timestamps in both directions,
+	 looking for the desired isdst.  This should work for all real
+	 time zone histories in the tz database.  */
+
+      /* Distance between probes when looking for a DST boundary.  In
+	 tzdata2003a, the shortest period of DST is 601200 seconds
+	 (e.g., America/Recife starting 2000-10-08 01:00), and the
+	 shortest period of non-DST surrounded by DST is 694800
+	 seconds (Africa/Tunis starting 1943-04-17 01:00).  Use the
+	 minimum of these two values, so we don't miss these short
+	 periods when probing.  */
+      int stride = 601200;
+
+      /* The longest period of DST in tzdata2003a is 536454000 seconds
+	 (e.g., America/Jujuy starting 1946-10-01 01:00).  The longest
+	 period of non-DST is much longer, but it makes no real sense
+	 to search for more than a year of non-DST, so use the DST
+	 max.  */
+      int duration_max = 536454000;
+
+      /* Search in both directions, so the maximum distance is half
+	 the duration; add the stride to avoid off-by-1 problems.  */
+      int delta_bound = duration_max / 2 + stride;
+
+      int delta, direction;
+
+      for (delta = stride; delta < delta_bound; delta += stride)
+	for (direction = -1; direction <= 1; direction += 2)
+	  if (time_t_int_add_ok (t, delta * direction))
+	    {
+	      time_t ot = t + delta * direction;
+	      struct tm otm;
+	      ranged_convert (convert, &ot, &otm);
+	      if (! isdst_differ (isdst, otm.tm_isdst))
+		{
+		  /* We found the desired tm_isdst.
+		     Extrapolate back to the desired time.  */
+		  t = guess_time_tm (year, yday, hour, min, sec, &ot, &otm);
+		  ranged_convert (convert, &t, &tm);
+		  goto offset_found;
+		}
+	    }
+    }
+
+ offset_found:
+  *offset = guessed_offset + t - t0;
+
+  if (LEAP_SECONDS_POSSIBLE && sec_requested != tm.tm_sec)
+    {
+      /* Adjust time to reflect the tm_sec requested, not the normalized value.
+	 Also, repair any damage from a false match due to a leap second.  */
+      int sec_adjustment = (sec == 0 && tm.tm_sec == 60) - sec;
+      if (! time_t_int_add_ok (t, sec_requested))
+	return -1;
+      t1 = t + sec_requested;
+      if (! time_t_int_add_ok (t1, sec_adjustment))
+	return -1;
+      t2 = t1 + sec_adjustment;
+      if (! convert (&t2, &tm))
+	return -1;
+      t = t2;
+    }
+
+  *tp = tm;
+  return t;
+}
+
+
+/* FIXME: This should use a signed type wide enough to hold any UTC
+   offset in seconds.  'int' should be good enough for GNU code.  We
+   can't fix this unilaterally though, as other modules invoke
+   __mktime_internal.  */
+static time_t localtime_offset;
+
+/* Convert *TP to a time_t value.  */
+time_t
+mktime (struct tm *tp)
+{
+#ifdef _LIBC
+  /* POSIX.1 8.1.1 requires that whenever mktime() is called, the
+     time zone names contained in the external variable 'tzname' shall
+     be set as if the tzset() function had been called.  */
+  __tzset ();
+#endif
+
+  return __mktime_internal (tp, __localtime_r, &localtime_offset);
+}
+
+#ifdef weak_alias
+weak_alias (mktime, timelocal)
+#endif
+
+#ifdef _LIBC
+libc_hidden_def (mktime)
+libc_hidden_weak (timelocal)
+#endif
+
+#if defined DEBUG_MKTIME && DEBUG_MKTIME
+
+static int
+not_equal_tm (const struct tm *a, const struct tm *b)
+{
+  return ((a->tm_sec ^ b->tm_sec)
+	  | (a->tm_min ^ b->tm_min)
+	  | (a->tm_hour ^ b->tm_hour)
+	  | (a->tm_mday ^ b->tm_mday)
+	  | (a->tm_mon ^ b->tm_mon)
+	  | (a->tm_year ^ b->tm_year)
+	  | (a->tm_yday ^ b->tm_yday)
+	  | isdst_differ (a->tm_isdst, b->tm_isdst));
+}
+
+static void
+print_tm (const struct tm *tp)
+{
+  if (tp)
+    printf ("%04d-%02d-%02d %02d:%02d:%02d yday %03d wday %d isdst %d",
+	    tp->tm_year + TM_YEAR_BASE, tp->tm_mon + 1, tp->tm_mday,
+	    tp->tm_hour, tp->tm_min, tp->tm_sec,
+	    tp->tm_yday, tp->tm_wday, tp->tm_isdst);
+  else
+    printf ("0");
+}
+
+static int
+check_result (time_t tk, struct tm tmk, time_t tl, const struct tm *lt)
+{
+  if (tk != tl || !lt || not_equal_tm (&tmk, lt))
+    {
+      printf ("mktime (");
+      print_tm (lt);
+      printf (")\nyields (");
+      print_tm (&tmk);
+      printf (") == %ld, should be %ld\n", (long int) tk, (long int) tl);
+      return 1;
+    }
+
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  int status = 0;
+  struct tm tm, tmk, tml;
+  struct tm *lt;
+  time_t tk, tl, tl1;
+  char trailer;
+
+  if ((argc == 3 || argc == 4)
+      && (sscanf (argv[1], "%d-%d-%d%c",
+		  &tm.tm_year, &tm.tm_mon, &tm.tm_mday, &trailer)
+	  == 3)
+      && (sscanf (argv[2], "%d:%d:%d%c",
+		  &tm.tm_hour, &tm.tm_min, &tm.tm_sec, &trailer)
+	  == 3))
+    {
+      tm.tm_year -= TM_YEAR_BASE;
+      tm.tm_mon--;
+      tm.tm_isdst = argc == 3 ? -1 : atoi (argv[3]);
+      tmk = tm;
+      tl = mktime (&tmk);
+      lt = localtime (&tl);
+      if (lt)
+	{
+	  tml = *lt;
+	  lt = &tml;
+	}
+      printf ("mktime returns %ld == ", (long int) tl);
+      print_tm (&tmk);
+      printf ("\n");
+      status = check_result (tl, tmk, tl, lt);
+    }
+  else if (argc == 4 || (argc == 5 && strcmp (argv[4], "-") == 0))
+    {
+      time_t from = atol (argv[1]);
+      time_t by = atol (argv[2]);
+      time_t to = atol (argv[3]);
+
+      if (argc == 4)
+	for (tl = from; by < 0 ? to <= tl : tl <= to; tl = tl1)
+	  {
+	    lt = localtime (&tl);
+	    if (lt)
+	      {
+		tmk = tml = *lt;
+		tk = mktime (&tmk);
+		status |= check_result (tk, tmk, tl, &tml);
+	      }
+	    else
+	      {
+		printf ("localtime (%ld) yields 0\n", (long int) tl);
+		status = 1;
+	      }
+	    tl1 = tl + by;
+	    if ((tl1 < tl) != (by < 0))
+	      break;
+	  }
+      else
+	for (tl = from; by < 0 ? to <= tl : tl <= to; tl = tl1)
+	  {
+	    /* Null benchmark.  */
+	    lt = localtime (&tl);
+	    if (lt)
+	      {
+		tmk = tml = *lt;
+		tk = tl;
+		status |= check_result (tk, tmk, tl, &tml);
+	      }
+	    else
+	      {
+		printf ("localtime (%ld) yields 0\n", (long int) tl);
+		status = 1;
+	      }
+	    tl1 = tl + by;
+	    if ((tl1 < tl) != (by < 0))
+	      break;
+	  }
+    }
+  else
+    printf ("Usage:\
+\t%s YYYY-MM-DD HH:MM:SS [ISDST] # Test given time.\n\
+\t%s FROM BY TO # Test values FROM, FROM+BY, ..., TO.\n\
+\t%s FROM BY TO - # Do not test those values (for benchmark).\n",
+	    argv[0], argv[0], argv[0]);
+
+  return status;
+}
+
+#endif /* DEBUG_MKTIME */
+
+/*
+Local Variables:
+compile-command: "gcc -DDEBUG_MKTIME -I. -Wall -W -O2 -g mktime.c -o mktime"
+End:
+*/
diff --git a/ap/libc/glibc/glibc-2.23/time/offtime.c b/ap/libc/glibc/glibc-2.23/time/offtime.c
new file mode 100644
index 0000000..b540b2f
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/offtime.c
@@ -0,0 +1,86 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <time.h>
+
+#define	SECS_PER_HOUR	(60 * 60)
+#define	SECS_PER_DAY	(SECS_PER_HOUR * 24)
+
+/* Compute the `struct tm' representation of *T,
+   offset OFFSET seconds east of UTC,
+   and store year, yday, mon, mday, wday, hour, min, sec into *TP.
+   Return nonzero if successful.  */
+int
+__offtime (const time_t *t, long int offset, struct tm *tp)
+{
+  time_t days, rem, y;
+  const unsigned short int *ip;
+
+  days = *t / SECS_PER_DAY;
+  rem = *t % SECS_PER_DAY;
+  rem += offset;
+  while (rem < 0)
+    {
+      rem += SECS_PER_DAY;
+      --days;
+    }
+  while (rem >= SECS_PER_DAY)
+    {
+      rem -= SECS_PER_DAY;
+      ++days;
+    }
+  tp->tm_hour = rem / SECS_PER_HOUR;
+  rem %= SECS_PER_HOUR;
+  tp->tm_min = rem / 60;
+  tp->tm_sec = rem % 60;
+  /* January 1, 1970 was a Thursday.  */
+  tp->tm_wday = (4 + days) % 7;
+  if (tp->tm_wday < 0)
+    tp->tm_wday += 7;
+  y = 1970;
+
+#define DIV(a, b) ((a) / (b) - ((a) % (b) < 0))
+#define LEAPS_THRU_END_OF(y) (DIV (y, 4) - DIV (y, 100) + DIV (y, 400))
+
+  while (days < 0 || days >= (__isleap (y) ? 366 : 365))
+    {
+      /* Guess a corrected year, assuming 365 days per year.  */
+      time_t yg = y + days / 365 - (days % 365 < 0);
+
+      /* Adjust DAYS and Y to match the guessed year.  */
+      days -= ((yg - y) * 365
+	       + LEAPS_THRU_END_OF (yg - 1)
+	       - LEAPS_THRU_END_OF (y - 1));
+      y = yg;
+    }
+  tp->tm_year = y - 1900;
+  if (tp->tm_year != y - 1900)
+    {
+      /* The year cannot be represented due to overflow.  */
+      __set_errno (EOVERFLOW);
+      return 0;
+    }
+  tp->tm_yday = days;
+  ip = __mon_yday[__isleap(y)];
+  for (y = 11; days < (long int) ip[y]; --y)
+    continue;
+  days -= ip[y];
+  tp->tm_mon = y;
+  tp->tm_mday = days + 1;
+  return 1;
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/setitimer.c b/ap/libc/glibc/glibc-2.23/time/setitimer.c
new file mode 100644
index 0000000..b99117a
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/setitimer.c
@@ -0,0 +1,40 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stddef.h>
+#include <errno.h>
+#include <sys/time.h>
+
+/* Set the timer WHICH to *NEW.  If OLD is not NULL,
+   set *OLD to the old value of timer WHICH.
+   Returns 0 on success, -1 on errors.  */
+int
+__setitimer (enum __itimer_which which, const struct itimerval *new,
+	     struct itimerval *old)
+{
+  if (new == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (setitimer)
+
+weak_alias (__setitimer, setitimer)
diff --git a/ap/libc/glibc/glibc-2.23/time/settimeofday.c b/ap/libc/glibc/glibc-2.23/time/settimeofday.c
new file mode 100644
index 0000000..f91caf0
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/settimeofday.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <sys/time.h>
+
+/* Set the current time of day and timezone information.
+   This call is restricted to the super-user.  */
+int
+__settimeofday (const struct timeval *tv, const struct timezone *tz)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (settimeofday)
+
+weak_alias (__settimeofday, settimeofday)
diff --git a/ap/libc/glibc/glibc-2.23/time/stime.c b/ap/libc/glibc/glibc-2.23/time/stime.c
new file mode 100644
index 0000000..0522335
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/stime.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1992-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <time.h>
+#include <stddef.h>
+
+/* Set the system clock to *WHEN.  */
+
+int
+stime (const time_t *when)
+{
+  if (when == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+stub_warning (stime)
diff --git a/ap/libc/glibc/glibc-2.23/time/strftime.c b/ap/libc/glibc/glibc-2.23/time/strftime.c
new file mode 100644
index 0000000..92150d9
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/strftime.c
@@ -0,0 +1,27 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+#include <locale/localeinfo.h>
+
+
+size_t
+strftime (char *s, size_t maxsize, const char *format, const struct tm *tp)
+{
+  return __strftime_l (s, maxsize, format, tp, _NL_CURRENT_LOCALE);
+}
+libc_hidden_def (strftime)
diff --git a/ap/libc/glibc/glibc-2.23/time/strftime_l.c b/ap/libc/glibc/glibc-2.23/time/strftime_l.c
new file mode 100644
index 0000000..1205035
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/strftime_l.c
@@ -0,0 +1,1425 @@
+/* Copyright (C) 2002-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef _LIBC
+# define USE_IN_EXTENDED_LOCALE_MODEL 1
+# define HAVE_LIMITS_H 1
+# define HAVE_MBLEN 1
+# define HAVE_MBRLEN 1
+# define HAVE_STRUCT_ERA_ENTRY 1
+# define HAVE_TM_GMTOFF 1
+# define HAVE_TM_ZONE 1
+# define HAVE_TZNAME 1
+# define HAVE_TZSET 1
+# define HAVE_STRFTIME 0
+# define MULTIBYTE_IS_FORMAT_SAFE 1
+# define STDC_HEADERS 1
+# include "../locale/localeinfo.h"
+#endif
+
+#if defined emacs && !defined HAVE_BCOPY
+# define HAVE_MEMCPY 1
+#endif
+
+#include <ctype.h>
+#include <sys/types.h>		/* Some systems define `time_t' here.  */
+
+#ifdef TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# ifdef HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+#if HAVE_TZNAME
+extern char *tzname[];
+#endif
+
+/* Do multibyte processing if multibytes are supported, unless
+   multibyte sequences are safe in formats.  Multibyte sequences are
+   safe if they cannot contain byte sequences that look like format
+   conversion specifications.  The GNU C Library uses UTF8 multibyte
+   encoding, which is safe for formats, but strftime.c can be used
+   with other C libraries that use unsafe encodings.  */
+#define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE)
+
+#if DO_MULTIBYTE
+# if HAVE_MBRLEN
+#  include <wchar.h>
+# else
+   /* Simulate mbrlen with mblen as best we can.  */
+#  define mbstate_t int
+#  define mbrlen(s, n, ps) mblen (s, n)
+#  define mbsinit(ps) (*(ps) == 0)
+# endif
+  static const mbstate_t mbstate_zero;
+#endif
+
+#if HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#if STDC_HEADERS
+# include <stddef.h>
+# include <stdlib.h>
+# include <string.h>
+# include <stdbool.h>
+#else
+# ifndef HAVE_MEMCPY
+#  define memcpy(d, s, n) bcopy ((s), (d), (n))
+# endif
+#endif
+
+#ifdef COMPILE_WIDE
+# include <endian.h>
+# define CHAR_T wchar_t
+# define UCHAR_T unsigned int
+# define L_(Str) L##Str
+# define NLW(Sym) _NL_W##Sym
+
+# define MEMCPY(d, s, n) __wmemcpy (d, s, n)
+# define STRLEN(s) __wcslen (s)
+
+#else
+# define CHAR_T char
+# define UCHAR_T unsigned char
+# define L_(Str) Str
+# define NLW(Sym) Sym
+
+# if !defined STDC_HEADERS && !defined HAVE_MEMCPY
+#  define MEMCPY(d, s, n) bcopy ((s), (d), (n))
+# else
+#  define MEMCPY(d, s, n) memcpy ((d), (s), (n))
+# endif
+# define STRLEN(s) strlen (s)
+
+# ifdef _LIBC
+#  define MEMPCPY(d, s, n) __mempcpy (d, s, n)
+# else
+#  ifndef HAVE_MEMPCPY
+#   define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n)))
+#  endif
+# endif
+#endif
+
+#ifndef PTR
+# define PTR void *
+#endif
+
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
+#endif
+
+#ifndef NULL
+# define NULL 0
+#endif
+
+#define TYPE_SIGNED(t) ((t) -1 < 0)
+
+/* Bound on length of the string representing an integer value of type t.
+   Subtract one for the sign bit if t is signed;
+   302 / 1000 is log10 (2) rounded up;
+   add one for integer division truncation;
+   add one more for a minus sign if t is signed.  */
+#define INT_STRLEN_BOUND(t) \
+ ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t))
+
+#define TM_YEAR_BASE 1900
+
+#ifndef __isleap
+/* Nonzero if YEAR is a leap year (every 4 years,
+   except every 100th isn't, and every 400th is).  */
+# define __isleap(year)	\
+  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+#endif
+
+
+#ifdef _LIBC
+# define tzname __tzname
+# define tzset __tzset
+#endif
+
+#if !HAVE_TM_GMTOFF
+/* Portable standalone applications should supply a "time_r.h" that
+   declares a POSIX-compliant localtime_r, for the benefit of older
+   implementations that lack localtime_r or have a nonstandard one.
+   Similarly for gmtime_r.  See the gnulib time_r module for one way
+   to implement this.  */
+# include "time_r.h"
+# undef __gmtime_r
+# undef __localtime_r
+# define __gmtime_r gmtime_r
+# define __localtime_r localtime_r
+#endif
+
+
+#if !defined memset && !defined HAVE_MEMSET && !defined _LIBC
+/* Some systems lack the `memset' function and we don't want to
+   introduce additional dependencies.  */
+/* The SGI compiler reportedly barfs on the trailing null
+   if we use a string constant as the initializer.  28 June 1997, rms.  */
+static const CHAR_T spaces[16] = /* "                " */
+{
+  L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),
+  L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' ')
+};
+static const CHAR_T zeroes[16] = /* "0000000000000000" */
+{
+  L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),
+  L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0')
+};
+
+# define memset_space(P, Len) \
+  do {									      \
+    int _len = (Len);							      \
+									      \
+    do									      \
+      {									      \
+	int _this = _len > 16 ? 16 : _len;				      \
+	(P) = MEMPCPY ((P), spaces, _this * sizeof (CHAR_T));		      \
+	_len -= _this;							      \
+      }									      \
+    while (_len > 0);							      \
+  } while (0)
+
+# define memset_zero(P, Len) \
+  do {									      \
+    int _len = (Len);							      \
+									      \
+    do									      \
+      {									      \
+	int _this = _len > 16 ? 16 : _len;				      \
+	(P) = MEMPCPY ((P), zeroes, _this * sizeof (CHAR_T));		      \
+	_len -= _this;							      \
+      }									      \
+    while (_len > 0);							      \
+  } while (0)
+#else
+# ifdef COMPILE_WIDE
+#  define memset_space(P, Len) (wmemset ((P), L' ', (Len)), (P) += (Len))
+#  define memset_zero(P, Len) (wmemset ((P), L'0', (Len)), (P) += (Len))
+# else
+#  define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len))
+#  define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len))
+# endif
+#endif
+
+#define add(n, f)							      \
+  do									      \
+    {									      \
+      int _n = (n);							      \
+      int _delta = width - _n;						      \
+      int _incr = _n + (_delta > 0 ? _delta : 0);			      \
+      if ((size_t) _incr >= maxsize - i)				      \
+	return 0;							      \
+      if (p)								      \
+	{								      \
+	  if (_delta > 0)						      \
+	    {								      \
+	      if (pad == L_('0'))					      \
+		memset_zero (p, _delta);				      \
+	      else							      \
+		memset_space (p, _delta);				      \
+	    }								      \
+	  f;								      \
+	  p += _n;							      \
+	}								      \
+      i += _incr;							      \
+    } while (0)
+
+#define cpy(n, s) \
+    add ((n),								      \
+	 if (to_lowcase)						      \
+	   memcpy_lowcase (p, (s), _n LOCALE_ARG);			      \
+	 else if (to_uppcase)						      \
+	   memcpy_uppcase (p, (s), _n LOCALE_ARG);			      \
+	 else								      \
+	   MEMCPY ((PTR) p, (const PTR) (s), _n))
+
+#ifdef COMPILE_WIDE
+# ifndef USE_IN_EXTENDED_LOCALE_MODEL
+#  undef __mbsrtowcs_l
+#  define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st)
+# endif
+# define widen(os, ws, l) \
+  {									      \
+    mbstate_t __st;							      \
+    const char *__s = os;						      \
+    memset (&__st, '\0', sizeof (__st));				      \
+    l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc);			      \
+    ws = alloca ((l + 1) * sizeof (wchar_t));				      \
+    (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc);			      \
+  }
+#endif
+
+
+#if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
+/* We use this code also for the extended locale handling where the
+   function gets as an additional argument the locale which has to be
+   used.  To access the values we have to redefine the _NL_CURRENT
+   macro.  */
+# define strftime		__strftime_l
+# define wcsftime		__wcsftime_l
+# undef _NL_CURRENT
+# define _NL_CURRENT(category, item) \
+  (current->values[_NL_ITEM_INDEX (item)].string)
+# define LOCALE_PARAM , __locale_t loc
+# define LOCALE_ARG , loc
+# define HELPER_LOCALE_ARG  , current
+#else
+# define LOCALE_PARAM
+# define LOCALE_ARG
+# ifdef _LIBC
+#  define HELPER_LOCALE_ARG , _NL_CURRENT_DATA (LC_TIME)
+# else
+#  define HELPER_LOCALE_ARG
+# endif
+#endif
+
+#ifdef COMPILE_WIDE
+# ifdef USE_IN_EXTENDED_LOCALE_MODEL
+#  define TOUPPER(Ch, L) __towupper_l (Ch, L)
+#  define TOLOWER(Ch, L) __towlower_l (Ch, L)
+# else
+#  define TOUPPER(Ch, L) towupper (Ch)
+#  define TOLOWER(Ch, L) towlower (Ch)
+# endif
+#else
+# ifdef _LIBC
+#  ifdef USE_IN_EXTENDED_LOCALE_MODEL
+#   define TOUPPER(Ch, L) __toupper_l (Ch, L)
+#   define TOLOWER(Ch, L) __tolower_l (Ch, L)
+#  else
+#   define TOUPPER(Ch, L) toupper (Ch)
+#   define TOLOWER(Ch, L) tolower (Ch)
+#  endif
+# else
+#  define TOUPPER(Ch, L) (islower (Ch) ? toupper (Ch) : (Ch))
+#  define TOLOWER(Ch, L) (isupper (Ch) ? tolower (Ch) : (Ch))
+# endif
+#endif
+/* We don't use `isdigit' here since the locale dependent
+   interpretation is not what we want here.  We only need to accept
+   the arabic digits in the ASCII range.  One day there is perhaps a
+   more reliable way to accept other sets of digits.  */
+#define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9)
+
+static CHAR_T *memcpy_lowcase (CHAR_T *dest, const CHAR_T *src,
+			       size_t len LOCALE_PARAM) __THROW;
+
+static CHAR_T *
+memcpy_lowcase (CHAR_T *dest, const CHAR_T *src, size_t len LOCALE_PARAM)
+{
+  while (len-- > 0)
+    dest[len] = TOLOWER ((UCHAR_T) src[len], loc);
+  return dest;
+}
+
+static CHAR_T *memcpy_uppcase (CHAR_T *dest, const CHAR_T *src,
+			       size_t len LOCALE_PARAM) __THROW;
+
+static CHAR_T *
+memcpy_uppcase (CHAR_T *dest, const CHAR_T *src, size_t len LOCALE_PARAM)
+{
+  while (len-- > 0)
+    dest[len] = TOUPPER ((UCHAR_T) src[len], loc);
+  return dest;
+}
+
+
+#if ! HAVE_TM_GMTOFF
+/* Yield the difference between *A and *B,
+   measured in seconds, ignoring leap seconds.  */
+# define tm_diff ftime_tm_diff
+static int tm_diff (const struct tm *, const struct tm *) __THROW;
+static int
+tm_diff (const struct tm *a, const struct tm *b)
+{
+  /* Compute intervening leap days correctly even if year is negative.
+     Take care to avoid int overflow in leap day calculations,
+     but it's OK to assume that A and B are close to each other.  */
+  int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3);
+  int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3);
+  int a100 = a4 / 25 - (a4 % 25 < 0);
+  int b100 = b4 / 25 - (b4 % 25 < 0);
+  int a400 = a100 >> 2;
+  int b400 = b100 >> 2;
+  int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
+  int years = a->tm_year - b->tm_year;
+  int days = (365 * years + intervening_leap_days
+	      + (a->tm_yday - b->tm_yday));
+  return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
+		+ (a->tm_min - b->tm_min))
+	  + (a->tm_sec - b->tm_sec));
+}
+#endif /* ! HAVE_TM_GMTOFF */
+
+
+
+/* The number of days from the first day of the first ISO week of this
+   year to the year day YDAY with week day WDAY.  ISO weeks start on
+   Monday; the first ISO week has the year's first Thursday.  YDAY may
+   be as small as YDAY_MINIMUM.  */
+#define ISO_WEEK_START_WDAY 1 /* Monday */
+#define ISO_WEEK1_WDAY 4 /* Thursday */
+#define YDAY_MINIMUM (-366)
+static int iso_week_days (int, int) __THROW;
+#ifdef __GNUC__
+__inline__
+#endif
+static int
+iso_week_days (int yday, int wday)
+{
+  /* Add enough to the first operand of % to make it nonnegative.  */
+  int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7;
+  return (yday
+	  - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7
+	  + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY);
+}
+
+
+#if !(defined _NL_CURRENT || HAVE_STRFTIME)
+static CHAR_T const weekday_name[][10] =
+  {
+    L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"),
+    L_("Thursday"), L_("Friday"), L_("Saturday")
+  };
+static CHAR_T const month_name[][10] =
+  {
+    L_("January"), L_("February"), L_("March"), L_("April"), L_("May"),
+    L_("June"), L_("July"), L_("August"), L_("September"), L_("October"),
+    L_("November"), L_("December")
+  };
+#endif
+
+
+#ifdef emacs
+# define my_strftime emacs_strftimeu
+# define ut_argument , ut
+# define ut_argument_spec , int ut
+#else
+# ifdef COMPILE_WIDE
+#  define my_strftime wcsftime
+#  define nl_get_alt_digit _nl_get_walt_digit
+# else
+#  define my_strftime strftime
+#  define nl_get_alt_digit _nl_get_alt_digit
+# endif
+# define ut_argument
+# define ut_argument_spec
+/* We don't have this information in general.  */
+# define ut 0
+#endif
+
+static size_t __strftime_internal (CHAR_T *, size_t, const CHAR_T *,
+				   const struct tm *, bool *
+				   ut_argument_spec
+				   LOCALE_PARAM) __THROW;
+
+/* Write information from TP into S according to the format
+   string FORMAT, writing no more that MAXSIZE characters
+   (including the terminating '\0') and returning number of
+   characters written.  If S is NULL, nothing will be written
+   anywhere, so to determine how many characters would be
+   written, use NULL for S and (size_t) UINT_MAX for MAXSIZE.  */
+
+size_t
+my_strftime (CHAR_T *s, size_t maxsize, const CHAR_T *format,
+	     const struct tm *tp ut_argument_spec LOCALE_PARAM)
+{
+#if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET
+  /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime.
+     Work around this bug by copying *tp before it might be munged.  */
+  struct tm tmcopy;
+  tmcopy = *tp;
+  tp = &tmcopy;
+#endif
+  bool tzset_called = false;
+  return __strftime_internal (s, maxsize, format, tp, &tzset_called
+			      ut_argument LOCALE_ARG);
+}
+#ifdef _LIBC
+libc_hidden_def (my_strftime)
+#endif
+
+static size_t
+__strftime_internal (CHAR_T *s, size_t maxsize, const CHAR_T *format,
+		     const struct tm *tp, bool *tzset_called
+		     ut_argument_spec LOCALE_PARAM)
+{
+#if defined _LIBC && defined USE_IN_EXTENDED_LOCALE_MODEL
+  struct __locale_data *const current = loc->__locales[LC_TIME];
+#endif
+
+  int hour12 = tp->tm_hour;
+#ifdef _NL_CURRENT
+  /* We cannot make the following values variables since we must delay
+     the evaluation of these values until really needed since some
+     expressions might not be valid in every situation.  The `struct tm'
+     might be generated by a strptime() call that initialized
+     only a few elements.  Dereference the pointers only if the format
+     requires this.  Then it is ok to fail if the pointers are invalid.  */
+# define a_wkday \
+  ((const CHAR_T *) (tp->tm_wday < 0 || tp->tm_wday > 6			     \
+		     ? "?" : _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday)))
+# define f_wkday \
+  ((const CHAR_T *) (tp->tm_wday < 0 || tp->tm_wday > 6			     \
+		     ? "?" : _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday)))
+# define a_month \
+  ((const CHAR_T *) (tp->tm_mon < 0 || tp->tm_mon > 11			     \
+		     ? "?" : _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon)))
+# define f_month \
+  ((const CHAR_T *) (tp->tm_mon < 0 || tp->tm_mon > 11			     \
+		     ? "?" : _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon)))
+# define ampm \
+  ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11		      \
+				 ? NLW(PM_STR) : NLW(AM_STR)))
+
+# define aw_len STRLEN (a_wkday)
+# define am_len STRLEN (a_month)
+# define ap_len STRLEN (ampm)
+#else
+# if !HAVE_STRFTIME
+#  define f_wkday (tp->tm_wday < 0 || tp->tm_wday > 6	\
+		   ? "?" : weekday_name[tp->tm_wday])
+#  define f_month (tp->tm_mon < 0 || tp->tm_mon > 11	\
+		   ? "?" : month_name[tp->tm_mon])
+#  define a_wkday f_wkday
+#  define a_month f_month
+#  define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11))
+
+  size_t aw_len = 3;
+  size_t am_len = 3;
+  size_t ap_len = 2;
+# endif
+#endif
+  const char *zone;
+  size_t i = 0;
+  CHAR_T *p = s;
+  const CHAR_T *f;
+#if DO_MULTIBYTE && !defined COMPILE_WIDE
+  const char *format_end = NULL;
+#endif
+
+  zone = NULL;
+#if HAVE_TM_ZONE
+  /* The POSIX test suite assumes that setting
+     the environment variable TZ to a new value before calling strftime()
+     will influence the result (the %Z format) even if the information in
+     TP is computed with a totally different time zone.
+     This is bogus: though POSIX allows bad behavior like this,
+     POSIX does not require it.  Do the right thing instead.  */
+  zone = (const char *) tp->tm_zone;
+#endif
+#if HAVE_TZNAME
+  if (ut)
+    {
+      if (! (zone && *zone))
+	zone = "GMT";
+    }
+#endif
+
+  if (hour12 > 12)
+    hour12 -= 12;
+  else
+    if (hour12 == 0)
+      hour12 = 12;
+
+  for (f = format; *f != '\0'; ++f)
+    {
+      int pad = 0;		/* Padding for number ('-', '_', or 0).  */
+      int modifier;		/* Field modifier ('E', 'O', or 0).  */
+      int digits;		/* Max digits for numeric format.  */
+      int number_value; 	/* Numeric value to be printed.  */
+      int negative_number;	/* 1 if the number is negative.  */
+      const CHAR_T *subfmt;
+      CHAR_T *bufp;
+      CHAR_T buf[1 + (sizeof (int) < sizeof (time_t)
+		      ? INT_STRLEN_BOUND (time_t)
+		      : INT_STRLEN_BOUND (int))];
+      int width = -1;
+      int to_lowcase = 0;
+      int to_uppcase = 0;
+      int change_case = 0;
+      int format_char;
+
+#if DO_MULTIBYTE && !defined COMPILE_WIDE
+      switch (*f)
+	{
+	case L_('%'):
+	  break;
+
+	case L_('\b'): case L_('\t'): case L_('\n'):
+	case L_('\v'): case L_('\f'): case L_('\r'):
+	case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'):
+	case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'):
+	case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'):
+	case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'):
+	case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'):
+	case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'):
+	case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'):
+	case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'):
+	case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'):
+	case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'):
+	case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'):
+	case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'):
+	case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'):
+	case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'):
+	case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'):
+	case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'):
+	case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'):
+	case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'):
+	case L_('~'):
+	  /* The C Standard requires these 98 characters (plus '%') to
+	     be in the basic execution character set.  None of these
+	     characters can start a multibyte sequence, so they need
+	     not be analyzed further.  */
+	  add (1, *p = *f);
+	  continue;
+
+	default:
+	  /* Copy this multibyte sequence until we reach its end, find
+	     an error, or come back to the initial shift state.  */
+	  {
+	    mbstate_t mbstate = mbstate_zero;
+	    size_t len = 0;
+	    size_t fsize;
+
+	    if (! format_end)
+	      format_end = f + strlen (f) + 1;
+	    fsize = format_end - f;
+
+	    do
+	      {
+		size_t bytes = mbrlen (f + len, fsize - len, &mbstate);
+
+		if (bytes == 0)
+		  break;
+
+		if (bytes == (size_t) -2)
+		  {
+		    len += strlen (f + len);
+		    break;
+		  }
+
+		if (bytes == (size_t) -1)
+		  {
+		    len++;
+		    break;
+		  }
+
+		len += bytes;
+	      }
+	    while (! mbsinit (&mbstate));
+
+	    cpy (len, f);
+	    f += len - 1;
+	    continue;
+	  }
+	}
+
+#else /* ! DO_MULTIBYTE */
+
+      /* Either multibyte encodings are not supported, they are
+	 safe for formats, so any non-'%' byte can be copied through,
+	 or this is the wide character version.  */
+      if (*f != L_('%'))
+	{
+	  add (1, *p = *f);
+	  continue;
+	}
+
+#endif /* ! DO_MULTIBYTE */
+
+      /* Check for flags that can modify a format.  */
+      while (1)
+	{
+	  switch (*++f)
+	    {
+	      /* This influences the number formats.  */
+	    case L_('_'):
+	    case L_('-'):
+	    case L_('0'):
+	      pad = *f;
+	      continue;
+
+	      /* This changes textual output.  */
+	    case L_('^'):
+	      to_uppcase = 1;
+	      continue;
+	    case L_('#'):
+	      change_case = 1;
+	      continue;
+
+	    default:
+	      break;
+	    }
+	  break;
+	}
+
+      /* As a GNU extension we allow to specify the field width.  */
+      if (ISDIGIT (*f))
+	{
+	  width = 0;
+	  do
+	    {
+	      if (width > INT_MAX / 10
+		  || (width == INT_MAX / 10 && *f - L_('0') > INT_MAX % 10))
+		/* Avoid overflow.  */
+		width = INT_MAX;
+	      else
+		{
+		  width *= 10;
+		  width += *f - L_('0');
+		}
+	      ++f;
+	    }
+	  while (ISDIGIT (*f));
+	}
+
+      /* Check for modifiers.  */
+      switch (*f)
+	{
+	case L_('E'):
+	case L_('O'):
+	  modifier = *f++;
+	  break;
+
+	default:
+	  modifier = 0;
+	  break;
+	}
+
+      /* Now do the specified format.  */
+      format_char = *f;
+      switch (format_char)
+	{
+#define DO_NUMBER(d, v) \
+	  digits = d > width ? d : width;				      \
+	  number_value = v; goto do_number
+#define DO_NUMBER_SPACEPAD(d, v) \
+	  digits = d > width ? d : width;				      \
+	  number_value = v; goto do_number_spacepad
+
+	case L_('%'):
+	  if (modifier != 0)
+	    goto bad_format;
+	  add (1, *p = *f);
+	  break;
+
+	case L_('a'):
+	  if (modifier != 0)
+	    goto bad_format;
+	  if (change_case)
+	    {
+	      to_uppcase = 1;
+	      to_lowcase = 0;
+	    }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (aw_len, a_wkday);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
+
+	case 'A':
+	  if (modifier != 0)
+	    goto bad_format;
+	  if (change_case)
+	    {
+	      to_uppcase = 1;
+	      to_lowcase = 0;
+	    }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (STRLEN (f_wkday), f_wkday);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
+
+	case L_('b'):
+	case L_('h'):
+	  if (change_case)
+	    {
+	      to_uppcase = 1;
+	      to_lowcase = 0;
+	    }
+	  if (modifier != 0)
+	    goto bad_format;
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (am_len, a_month);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
+
+	case L_('B'):
+	  if (modifier != 0)
+	    goto bad_format;
+	  if (change_case)
+	    {
+	      to_uppcase = 1;
+	      to_lowcase = 0;
+	    }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (STRLEN (f_month), f_month);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
+
+	case L_('c'):
+	  if (modifier == L_('O'))
+	    goto bad_format;
+#ifdef _NL_CURRENT
+	  if (! (modifier == 'E'
+		 && (*(subfmt =
+		       (const CHAR_T *) _NL_CURRENT (LC_TIME,
+						     NLW(ERA_D_T_FMT)))
+		     != '\0')))
+	    subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT));
+#else
+# if HAVE_STRFTIME
+	  goto underlying_strftime;
+# else
+	  subfmt = L_("%a %b %e %H:%M:%S %Y");
+# endif
+#endif
+
+	subformat:
+	  {
+	    CHAR_T *old_start = p;
+	    size_t len = __strftime_internal (NULL, (size_t) -1, subfmt,
+					      tp, tzset_called ut_argument
+					      LOCALE_ARG);
+	    add (len, __strftime_internal (p, maxsize - i, subfmt,
+					   tp, tzset_called ut_argument
+					   LOCALE_ARG));
+
+	    if (to_uppcase)
+	      while (old_start < p)
+		{
+		  *old_start = TOUPPER ((UCHAR_T) *old_start, loc);
+		  ++old_start;
+		}
+	  }
+	  break;
+
+#if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY)
+	underlying_strftime:
+	  {
+	    /* The relevant information is available only via the
+	       underlying strftime implementation, so use that.  */
+	    char ufmt[4];
+	    char *u = ufmt;
+	    char ubuf[1024]; /* enough for any single format in practice */
+	    size_t len;
+	    /* Make sure we're calling the actual underlying strftime.
+	       In some cases, config.h contains something like
+	       "#define strftime rpl_strftime".  */
+# ifdef strftime
+#  undef strftime
+	    size_t strftime ();
+# endif
+
+	    *u++ = '%';
+	    if (modifier != 0)
+	      *u++ = modifier;
+	    *u++ = format_char;
+	    *u = '\0';
+	    len = strftime (ubuf, sizeof ubuf, ufmt, tp);
+	    if (len == 0 && ubuf[0] != '\0')
+	      return 0;
+	    cpy (len, ubuf);
+	  }
+	  break;
+#endif
+
+	case L_('C'):
+	  if (modifier == L_('E'))
+	    {
+#if HAVE_STRUCT_ERA_ENTRY
+	      struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
+	      if (era)
+		{
+# ifdef COMPILE_WIDE
+		  size_t len = __wcslen (era->era_wname);
+		  cpy (len, era->era_wname);
+# else
+		  size_t len = strlen (era->era_name);
+		  cpy (len, era->era_name);
+# endif
+		  break;
+		}
+#else
+# if HAVE_STRFTIME
+	      goto underlying_strftime;
+# endif
+#endif
+	    }
+
+	  {
+	    int year = tp->tm_year + TM_YEAR_BASE;
+	    DO_NUMBER (1, year / 100 - (year % 100 < 0));
+	  }
+
+	case L_('x'):
+	  if (modifier == L_('O'))
+	    goto bad_format;
+#ifdef _NL_CURRENT
+	  if (! (modifier == L_('E')
+		 && (*(subfmt =
+		       (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT)))
+		     != L_('\0'))))
+	    subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT));
+	  goto subformat;
+#else
+# if HAVE_STRFTIME
+	  goto underlying_strftime;
+# else
+	  /* Fall through.  */
+# endif
+#endif
+	case L_('D'):
+	  if (modifier != 0)
+	    goto bad_format;
+	  subfmt = L_("%m/%d/%y");
+	  goto subformat;
+
+	case L_('d'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, tp->tm_mday);
+
+	case L_('e'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER_SPACEPAD (2, tp->tm_mday);
+
+	  /* All numeric formats set DIGITS and NUMBER_VALUE and then
+	     jump to one of these two labels.  */
+
+	do_number_spacepad:
+	  /* Force `_' flag unless overwritten by `0' or '-' flag.  */
+	  if (pad != L_('0') && pad != L_('-'))
+	    pad = L_('_');
+
+	do_number:
+	  /* Format the number according to the MODIFIER flag.  */
+
+	  if (modifier == L_('O') && 0 <= number_value)
+	    {
+#ifdef _NL_CURRENT
+	      /* Get the locale specific alternate representation of
+		 the number NUMBER_VALUE.  If none exist NULL is returned.  */
+	      const CHAR_T *cp = nl_get_alt_digit (number_value
+						   HELPER_LOCALE_ARG);
+
+	      if (cp != NULL)
+		{
+		  size_t digitlen = STRLEN (cp);
+		  if (digitlen != 0)
+		    {
+		      cpy (digitlen, cp);
+		      break;
+		    }
+		}
+#else
+# if HAVE_STRFTIME
+	      goto underlying_strftime;
+# endif
+#endif
+	    }
+	  {
+	    unsigned int u = number_value;
+
+	    bufp = buf + sizeof (buf) / sizeof (buf[0]);
+	    negative_number = number_value < 0;
+
+	    if (negative_number)
+	      u = -u;
+
+	    do
+	      *--bufp = u % 10 + L_('0');
+	    while ((u /= 10) != 0);
+  	  }
+
+	do_number_sign_and_padding:
+	  if (negative_number)
+	    *--bufp = L_('-');
+
+	  if (pad != L_('-'))
+	    {
+	      int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0]))
+				      - bufp);
+
+	      if (padding > 0)
+		{
+		  if (pad == L_('_'))
+		    {
+		      if ((size_t) padding >= maxsize - i)
+			return 0;
+
+		      if (p)
+			memset_space (p, padding);
+		      i += padding;
+		      width = width > padding ? width - padding : 0;
+		    }
+		  else
+		    {
+		      if ((size_t) digits >= maxsize - i)
+			return 0;
+
+		      if (negative_number)
+			{
+			  ++bufp;
+
+			  if (p)
+			    *p++ = L_('-');
+			  ++i;
+			}
+
+		      if (p)
+			memset_zero (p, padding);
+		      i += padding;
+		      width = 0;
+		    }
+		}
+	    }
+
+	  cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp);
+	  break;
+
+	case L_('F'):
+	  if (modifier != 0)
+	    goto bad_format;
+	  subfmt = L_("%Y-%m-%d");
+	  goto subformat;
+
+	case L_('H'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, tp->tm_hour);
+
+	case L_('I'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, hour12);
+
+	case L_('k'):		/* GNU extension.  */
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER_SPACEPAD (2, tp->tm_hour);
+
+	case L_('l'):		/* GNU extension.  */
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER_SPACEPAD (2, hour12);
+
+	case L_('j'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (3, 1 + tp->tm_yday);
+
+	case L_('M'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, tp->tm_min);
+
+	case L_('m'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, tp->tm_mon + 1);
+
+	case L_('n'):
+	  add (1, *p = L_('\n'));
+	  break;
+
+	case L_('P'):
+	  to_lowcase = 1;
+#if !defined _NL_CURRENT && HAVE_STRFTIME
+	  format_char = L_('p');
+#endif
+	  /* FALLTHROUGH */
+
+	case L_('p'):
+	  if (change_case)
+	    {
+	      to_uppcase = 0;
+	      to_lowcase = 1;
+	    }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (ap_len, ampm);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
+
+	case L_('R'):
+	  subfmt = L_("%H:%M");
+	  goto subformat;
+
+	case L_('r'):
+#if !defined _NL_CURRENT && HAVE_STRFTIME
+	  goto underlying_strftime;
+#else
+# ifdef _NL_CURRENT
+	  if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME,
+						       NLW(T_FMT_AMPM)))
+	      == L_('\0'))
+# endif
+	    subfmt = L_("%I:%M:%S %p");
+	  goto subformat;
+#endif
+
+	case L_('S'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, tp->tm_sec);
+
+	case L_('s'):		/* GNU extension.  */
+  	  {
+	    struct tm ltm;
+	    time_t t;
+
+	    ltm = *tp;
+	    t = mktime (&ltm);
+
+	    /* Generate string value for T using time_t arithmetic;
+	       this works even if sizeof (long) < sizeof (time_t).  */
+
+	    bufp = buf + sizeof (buf) / sizeof (buf[0]);
+	    negative_number = t < 0;
+
+	    do
+	      {
+		int d = t % 10;
+		t /= 10;
+
+		if (negative_number)
+		  {
+		    d = -d;
+
+		    /* Adjust if division truncates to minus infinity.  */
+		    if (0 < -1 % 10 && d < 0)
+		      {
+			t++;
+			d += 10;
+		      }
+		  }
+
+		*--bufp = d + L_('0');
+	      }
+	    while (t != 0);
+
+	    digits = 1;
+	    goto do_number_sign_and_padding;
+	  }
+
+	case L_('X'):
+	  if (modifier == L_('O'))
+	    goto bad_format;
+#ifdef _NL_CURRENT
+	  if (! (modifier == L_('E')
+		 && (*(subfmt =
+		       (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT)))
+		     != L_('\0'))))
+	    subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT));
+	  goto subformat;
+#else
+# if HAVE_STRFTIME
+	  goto underlying_strftime;
+# else
+	  /* Fall through.  */
+# endif
+#endif
+	case L_('T'):
+	  subfmt = L_("%H:%M:%S");
+	  goto subformat;
+
+	case L_('t'):
+	  add (1, *p = L_('\t'));
+	  break;
+
+	case L_('u'):
+	  DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1);
+
+	case L_('U'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7);
+
+	case L_('V'):
+	case L_('g'):
+	case L_('G'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+	  {
+	    int year = tp->tm_year + TM_YEAR_BASE;
+	    int days = iso_week_days (tp->tm_yday, tp->tm_wday);
+
+	    if (days < 0)
+	      {
+		/* This ISO week belongs to the previous year.  */
+		year--;
+		days = iso_week_days (tp->tm_yday + (365 + __isleap (year)),
+				      tp->tm_wday);
+	      }
+	    else
+	      {
+		int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)),
+				       tp->tm_wday);
+		if (0 <= d)
+		  {
+		    /* This ISO week belongs to the next year.  */
+		    year++;
+		    days = d;
+		  }
+	      }
+
+	    switch (*f)
+	      {
+	      case L_('g'):
+		DO_NUMBER (2, (year % 100 + 100) % 100);
+
+	      case L_('G'):
+		DO_NUMBER (1, year);
+
+	      default:
+		DO_NUMBER (2, days / 7 + 1);
+	      }
+	  }
+
+	case L_('W'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7);
+
+	case L_('w'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (1, tp->tm_wday);
+
+	case L_('Y'):
+	  if (modifier == 'E')
+	    {
+#if HAVE_STRUCT_ERA_ENTRY
+	      struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
+	      if (era)
+		{
+# ifdef COMPILE_WIDE
+		  subfmt = era->era_wformat;
+# else
+		  subfmt = era->era_format;
+# endif
+		  goto subformat;
+		}
+#else
+# if HAVE_STRFTIME
+	      goto underlying_strftime;
+# endif
+#endif
+	    }
+	  if (modifier == L_('O'))
+	    goto bad_format;
+	  else
+	    DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE);
+
+	case L_('y'):
+	  if (modifier == L_('E'))
+	    {
+#if HAVE_STRUCT_ERA_ENTRY
+	      struct era_entry *era = _nl_get_era_entry (tp HELPER_LOCALE_ARG);
+	      if (era)
+		{
+		  int delta = tp->tm_year - era->start_date[0];
+		  DO_NUMBER (1, (era->offset
+				 + delta * era->absolute_direction));
+		}
+#else
+# if HAVE_STRFTIME
+	      goto underlying_strftime;
+# endif
+#endif
+	    }
+	  DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100);
+
+	case L_('Z'):
+	  if (change_case)
+	    {
+	      to_uppcase = 0;
+	      to_lowcase = 1;
+	    }
+
+#if HAVE_TZNAME
+	  /* The tzset() call might have changed the value.  */
+	  if (!(zone && *zone) && tp->tm_isdst >= 0)
+	    {
+	      /* POSIX.1 requires that local time zone information is used as
+		 though strftime called tzset.  */
+# if HAVE_TZSET
+	      if (!*tzset_called)
+		{
+		  tzset ();
+		  *tzset_called = true;
+		}
+# endif
+	      zone = tp->tm_isdst <= 1 ? tzname[tp->tm_isdst] : "?";
+	    }
+#endif
+	  if (! zone)
+	    zone = "";
+
+#ifdef COMPILE_WIDE
+	  {
+	    /* The zone string is always given in multibyte form.  We have
+	       to transform it first.  */
+	    wchar_t *wczone;
+	    size_t len;
+	    widen (zone, wczone, len);
+	    cpy (len, wczone);
+	  }
+#else
+	  cpy (strlen (zone), zone);
+#endif
+	  break;
+
+	case L_('z'):
+	  if (tp->tm_isdst < 0)
+	    break;
+
+	  {
+	    int diff;
+#if HAVE_TM_GMTOFF
+	    diff = tp->tm_gmtoff;
+#else
+	    if (ut)
+	      diff = 0;
+	    else
+	      {
+		struct tm gtm;
+		struct tm ltm;
+		time_t lt;
+
+		/* POSIX.1 requires that local time zone information is used as
+		   though strftime called tzset.  */
+# if HAVE_TZSET
+		if (!*tzset_called)
+		  {
+		    tzset ();
+		    *tzset_called = true;
+		  }
+# endif
+
+		ltm = *tp;
+		lt = mktime (&ltm);
+
+		if (lt == (time_t) -1)
+		  {
+		    /* mktime returns -1 for errors, but -1 is also a
+		       valid time_t value.  Check whether an error really
+		       occurred.  */
+		    struct tm tm;
+
+		    if (! __localtime_r (&lt, &tm)
+			|| ((ltm.tm_sec ^ tm.tm_sec)
+			    | (ltm.tm_min ^ tm.tm_min)
+			    | (ltm.tm_hour ^ tm.tm_hour)
+			    | (ltm.tm_mday ^ tm.tm_mday)
+			    | (ltm.tm_mon ^ tm.tm_mon)
+			    | (ltm.tm_year ^ tm.tm_year)))
+		      break;
+		  }
+
+		if (! __gmtime_r (&lt, &gtm))
+		  break;
+
+		diff = tm_diff (&ltm, &gtm);
+	      }
+#endif
+
+	    if (diff < 0)
+	      {
+		add (1, *p = L_('-'));
+		diff = -diff;
+	      }
+	    else
+	      add (1, *p = L_('+'));
+
+	    diff /= 60;
+	    DO_NUMBER (4, (diff / 60) * 100 + diff % 60);
+	  }
+
+	case L_('\0'):		/* GNU extension: % at end of format.  */
+	    --f;
+	    /* Fall through.  */
+	default:
+	  /* Unknown format; output the format, including the '%',
+	     since this is most likely the right thing to do if a
+	     multibyte string has been misparsed.  */
+	bad_format:
+	  {
+	    int flen;
+	    for (flen = 1; f[1 - flen] != L_('%'); flen++)
+	      continue;
+	    cpy (flen, &f[1 - flen]);
+	  }
+	  break;
+	}
+    }
+
+  if (p && maxsize != 0)
+    *p = L_('\0');
+  return i;
+}
+
+
+#ifdef emacs
+/* For Emacs we have a separate interface which corresponds to the normal
+   strftime function and does not have the extra information whether the
+   TP arguments comes from a `gmtime' call or not.  */
+size_t
+emacs_strftime (char *s, size_t maxsize, const char *format,
+		const struct tm *tp)
+{
+  return my_strftime (s, maxsize, format, tp, 0);
+}
+#endif
+
+#if defined _LIBC && !defined COMPILE_WIDE
+weak_alias (__strftime_l, strftime_l)
+#endif
diff --git a/ap/libc/glibc/glibc-2.23/time/strptime.c b/ap/libc/glibc/glibc-2.23/time/strptime.c
new file mode 100644
index 0000000..7e0726f
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/strptime.c
@@ -0,0 +1,34 @@
+/* Convert a string representation of time to a time value.
+   Copyright (C) 1996-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* XXX This version of the implementation is not really complete.
+   Some of the fields cannot add information alone.  But if seeing
+   some of them in the same format (such as year, week and weekday)
+   this is enough information for determining the date.  */
+
+#include <time.h>
+#include <locale/localeinfo.h>
+
+
+char *
+strptime (const char *buf, const char *format, struct tm *tm)
+{
+  return __strptime_internal (buf, format, tm, NULL, _NL_CURRENT_LOCALE);
+}
+libc_hidden_def (strptime)
diff --git a/ap/libc/glibc/glibc-2.23/time/strptime_l.c b/ap/libc/glibc/glibc-2.23/time/strptime_l.c
new file mode 100644
index 0000000..3a56947
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/strptime_l.c
@@ -0,0 +1,1211 @@
+/* Copyright (C) 2002-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <assert.h>
+#include <ctype.h>
+#include <langinfo.h>
+#include <limits.h>
+#include <string.h>
+#include <time.h>
+#include <stdbool.h>
+
+#ifdef _LIBC
+# define HAVE_LOCALTIME_R 0
+# include "../locale/localeinfo.h"
+#endif
+
+
+#if ! HAVE_LOCALTIME_R && ! defined localtime_r
+# ifdef _LIBC
+#  define localtime_r __localtime_r
+# else
+/* Approximate localtime_r as best we can in its absence.  */
+#  define localtime_r my_localtime_r
+static struct tm *localtime_r (const time_t *, struct tm *);
+static struct tm *
+localtime_r (const time_t *t, struct tm *tp)
+{
+  struct tm *l = localtime (t);
+  if (! l)
+    return 0;
+  *tp = *l;
+  return tp;
+}
+# endif /* ! _LIBC */
+#endif /* ! HAVE_LOCALTIME_R && ! defined (localtime_r) */
+
+
+#define match_char(ch1, ch2) if (ch1 != ch2) return NULL
+#if defined __GNUC__ && __GNUC__ >= 2
+# define match_string(cs1, s2) \
+  ({ size_t len = strlen (cs1);						      \
+     int result = __strncasecmp_l ((cs1), (s2), len, locale) == 0;	      \
+     if (result) (s2) += len;						      \
+     result; })
+#else
+/* Oh come on.  Get a reasonable compiler.  */
+# define match_string(cs1, s2) \
+  (strncasecmp ((cs1), (s2), strlen (cs1)) ? 0 : ((s2) += strlen (cs1), 1))
+#endif
+/* We intentionally do not use isdigit() for testing because this will
+   lead to problems with the wide character version.  */
+#define get_number(from, to, n) \
+  do {									      \
+    int __n = n;							      \
+    val = 0;								      \
+    while (ISSPACE (*rp))						      \
+      ++rp;								      \
+    if (*rp < '0' || *rp > '9')						      \
+      return NULL;							      \
+    do {								      \
+      val *= 10;							      \
+      val += *rp++ - '0';						      \
+    } while (--__n > 0 && val * 10 <= to && *rp >= '0' && *rp <= '9');	      \
+    if (val < from || val > to)						      \
+      return NULL;							      \
+  } while (0)
+#ifdef _NL_CURRENT
+# define get_alt_number(from, to, n) \
+  ({									      \
+     __label__ do_normal;						      \
+									      \
+     if (s.decided != raw)						      \
+       {								      \
+	 val = _nl_parse_alt_digit (&rp HELPER_LOCALE_ARG);		      \
+	 if (val == -1 && s.decided != loc)				      \
+	   {								      \
+	     s.decided = loc;						      \
+	     goto do_normal;						      \
+	   }								      \
+	if (val < from || val > to)					      \
+	  return NULL;							      \
+       }								      \
+     else								      \
+       {								      \
+       do_normal:							      \
+	 get_number (from, to, n);					      \
+       }								      \
+    0;									      \
+  })
+#else
+# define get_alt_number(from, to, n) \
+  /* We don't have the alternate representation.  */			      \
+  get_number(from, to, n)
+#endif
+#define recursive(new_fmt) \
+  (*(new_fmt) != '\0'							      \
+   && (rp = __strptime_internal (rp, (new_fmt), tm, &s LOCALE_ARG)) != NULL)
+
+
+#ifdef _LIBC
+/* This is defined in locale/C-time.c in the GNU libc.  */
+extern const struct __locale_data _nl_C_LC_TIME attribute_hidden;
+
+# define weekday_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (DAY_1)].string)
+# define ab_weekday_name \
+  (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABDAY_1)].string)
+# define month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (MON_1)].string)
+# define ab_month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABMON_1)].string)
+# define HERE_D_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_T_FMT)].string)
+# define HERE_D_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_FMT)].string)
+# define HERE_AM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (AM_STR)].string)
+# define HERE_PM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (PM_STR)].string)
+# define HERE_T_FMT_AMPM \
+  (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT_AMPM)].string)
+# define HERE_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT)].string)
+
+# define strncasecmp(s1, s2, n) __strncasecmp (s1, s2, n)
+#else
+static char const weekday_name[][10] =
+  {
+    "Sunday", "Monday", "Tuesday", "Wednesday",
+    "Thursday", "Friday", "Saturday"
+  };
+static char const ab_weekday_name[][4] =
+  {
+    "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+  };
+static char const month_name[][10] =
+  {
+    "January", "February", "March", "April", "May", "June",
+    "July", "August", "September", "October", "November", "December"
+  };
+static char const ab_month_name[][4] =
+  {
+    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+  };
+# define HERE_D_T_FMT "%a %b %e %H:%M:%S %Y"
+# define HERE_D_FMT "%m/%d/%y"
+# define HERE_AM_STR "AM"
+# define HERE_PM_STR "PM"
+# define HERE_T_FMT_AMPM "%I:%M:%S %p"
+# define HERE_T_FMT "%H:%M:%S"
+
+static const unsigned short int __mon_yday[2][13] =
+  {
+    /* Normal years.  */
+    { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
+    /* Leap years.  */
+    { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
+  };
+#endif
+
+#if defined _LIBC
+/* We use this code also for the extended locale handling where the
+   function gets as an additional argument the locale which has to be
+   used.  To access the values we have to redefine the _NL_CURRENT
+   macro.  */
+# define strptime		__strptime_l
+# undef _NL_CURRENT
+# define _NL_CURRENT(category, item) \
+  (current->values[_NL_ITEM_INDEX (item)].string)
+# undef _NL_CURRENT_WORD
+# define _NL_CURRENT_WORD(category, item) \
+  (current->values[_NL_ITEM_INDEX (item)].word)
+# define LOCALE_PARAM , __locale_t locale
+# define LOCALE_ARG , locale
+# define HELPER_LOCALE_ARG , current
+# define ISSPACE(Ch) __isspace_l (Ch, locale)
+#else
+# define LOCALE_PARAM
+# define LOCALE_ARG
+# define HELPER_LOCALE_ARG
+# define ISSPACE(Ch) isspace (Ch)
+#endif
+
+
+
+
+#ifndef __isleap
+/* Nonzero if YEAR is a leap year (every 4 years,
+   except every 100th isn't, and every 400th is).  */
+# define __isleap(year)	\
+  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+#endif
+
+/* Compute the day of the week.  */
+static void
+day_of_the_week (struct tm *tm)
+{
+  /* We know that January 1st 1970 was a Thursday (= 4).  Compute the
+     difference between this data in the one on TM and so determine
+     the weekday.  */
+  int corr_year = 1900 + tm->tm_year - (tm->tm_mon < 2);
+  int wday = (-473
+	      + (365 * (tm->tm_year - 70))
+	      + (corr_year / 4)
+	      - ((corr_year / 4) / 25) + ((corr_year / 4) % 25 < 0)
+	      + (((corr_year / 4) / 25) / 4)
+	      + __mon_yday[0][tm->tm_mon]
+	      + tm->tm_mday - 1);
+  tm->tm_wday = ((wday % 7) + 7) % 7;
+}
+
+/* Compute the day of the year.  */
+static void
+day_of_the_year (struct tm *tm)
+{
+  tm->tm_yday = (__mon_yday[__isleap (1900 + tm->tm_year)][tm->tm_mon]
+		 + (tm->tm_mday - 1));
+}
+
+
+#ifdef _LIBC
+char *
+internal_function
+#else
+static char *
+#endif
+__strptime_internal (const char *rp, const char *fmt, struct tm *tmp,
+		     void *statep LOCALE_PARAM)
+{
+#ifdef _LIBC
+  struct __locale_data *const current = locale->__locales[LC_TIME];
+#endif
+
+  const char *rp_backup;
+  const char *rp_longest;
+  int cnt;
+  int cnt_longest;
+  size_t val;
+  size_t num_eras;
+  struct era_entry *era = NULL;
+  enum ptime_locale_status { not, loc, raw } decided_longest;
+  struct __strptime_state
+  {
+    unsigned int have_I : 1;
+    unsigned int have_wday : 1;
+    unsigned int have_yday : 1;
+    unsigned int have_mon : 1;
+    unsigned int have_mday : 1;
+    unsigned int have_uweek : 1;
+    unsigned int have_wweek : 1;
+    unsigned int is_pm : 1;
+    unsigned int want_century : 1;
+    unsigned int want_era : 1;
+    unsigned int want_xday : 1;
+    enum ptime_locale_status decided : 2;
+    signed char week_no;
+    signed char century;
+    int era_cnt;
+  } s;
+  struct tm tmb;
+  struct tm *tm;
+
+  if (statep == NULL)
+    {
+      memset (&s, 0, sizeof (s));
+      s.century = -1;
+      s.era_cnt = -1;
+#ifdef _NL_CURRENT
+      s.decided = not;
+#else
+      s.decided = raw;
+#endif
+      tm = tmp;
+    }
+  else
+    {
+      s = *(struct __strptime_state *) statep;
+      tmb = *tmp;
+      tm = &tmb;
+    }
+
+  while (*fmt != '\0')
+    {
+      /* A white space in the format string matches 0 more or white
+	 space in the input string.  */
+      if (ISSPACE (*fmt))
+	{
+	  while (ISSPACE (*rp))
+	    ++rp;
+	  ++fmt;
+	  continue;
+	}
+
+      /* Any character but `%' must be matched by the same character
+	 in the iput string.  */
+      if (*fmt != '%')
+	{
+	  match_char (*fmt++, *rp++);
+	  continue;
+	}
+
+      ++fmt;
+      /* We discard strftime modifiers.  */
+      while (*fmt == '-' || *fmt == '_' || *fmt == '0'
+	     || *fmt == '^' || *fmt == '#')
+	++fmt;
+
+      /* And field width.  */
+      while (*fmt >= '0' && *fmt <= '9')
+	++fmt;
+
+#ifndef _NL_CURRENT
+      /* We need this for handling the `E' modifier.  */
+    start_over:
+#endif
+
+      /* Make back up of current processing pointer.  */
+      rp_backup = rp;
+
+      switch (*fmt++)
+	{
+	case '%':
+	  /* Match the `%' character itself.  */
+	  match_char ('%', *rp++);
+	  break;
+	case 'a':
+	case 'A':
+	  /* Match day of week.  */
+	  rp_longest = NULL;
+	  decided_longest = s.decided;
+	  cnt_longest = -1;
+	  for (cnt = 0; cnt < 7; ++cnt)
+	    {
+	      const char *trp;
+#ifdef _NL_CURRENT
+	      if (s.decided !=raw)
+		{
+		  trp = rp;
+		  if (match_string (_NL_CURRENT (LC_TIME, DAY_1 + cnt), trp)
+		      && trp > rp_longest)
+		    {
+		      rp_longest = trp;
+		      cnt_longest = cnt;
+		      if (s.decided == not
+			  && strcmp (_NL_CURRENT (LC_TIME, DAY_1 + cnt),
+				     weekday_name[cnt]))
+			decided_longest = loc;
+		    }
+		  trp = rp;
+		  if (match_string (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), trp)
+		      && trp > rp_longest)
+		    {
+		      rp_longest = trp;
+		      cnt_longest = cnt;
+		      if (s.decided == not
+			  && strcmp (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt),
+				     ab_weekday_name[cnt]))
+			decided_longest = loc;
+		    }
+		}
+#endif
+	      if (s.decided != loc
+		  && (((trp = rp, match_string (weekday_name[cnt], trp))
+		       && trp > rp_longest)
+		      || ((trp = rp, match_string (ab_weekday_name[cnt], rp))
+			  && trp > rp_longest)))
+		{
+		  rp_longest = trp;
+		  cnt_longest = cnt;
+		  decided_longest = raw;
+		}
+	    }
+	  if (rp_longest == NULL)
+	    /* Does not match a weekday name.  */
+	    return NULL;
+	  rp = rp_longest;
+	  s.decided = decided_longest;
+	  tm->tm_wday = cnt_longest;
+	  s.have_wday = 1;
+	  break;
+	case 'b':
+	case 'B':
+	case 'h':
+	  /* Match month name.  */
+	  rp_longest = NULL;
+	  decided_longest = s.decided;
+	  cnt_longest = -1;
+	  for (cnt = 0; cnt < 12; ++cnt)
+	    {
+	      const char *trp;
+#ifdef _NL_CURRENT
+	      if (s.decided !=raw)
+		{
+		  trp = rp;
+		  if (match_string (_NL_CURRENT (LC_TIME, MON_1 + cnt), trp)
+		      && trp > rp_longest)
+		    {
+		      rp_longest = trp;
+		      cnt_longest = cnt;
+		      if (s.decided == not
+			  && strcmp (_NL_CURRENT (LC_TIME, MON_1 + cnt),
+				     month_name[cnt]))
+			decided_longest = loc;
+		    }
+		  trp = rp;
+		  if (match_string (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), trp)
+		      && trp > rp_longest)
+		    {
+		      rp_longest = trp;
+		      cnt_longest = cnt;
+		      if (s.decided == not
+			  && strcmp (_NL_CURRENT (LC_TIME, ABMON_1 + cnt),
+				     ab_month_name[cnt]))
+			decided_longest = loc;
+		    }
+		}
+#endif
+	      if (s.decided != loc
+		  && (((trp = rp, match_string (month_name[cnt], trp))
+		       && trp > rp_longest)
+		      || ((trp = rp, match_string (ab_month_name[cnt], trp))
+			  && trp > rp_longest)))
+		{
+		  rp_longest = trp;
+		  cnt_longest = cnt;
+		  decided_longest = raw;
+		}
+	    }
+	  if (rp_longest == NULL)
+	    /* Does not match a month name.  */
+	    return NULL;
+	  rp = rp_longest;
+	  s.decided = decided_longest;
+	  tm->tm_mon = cnt_longest;
+	  s.have_mon = 1;
+	  s.want_xday = 1;
+	  break;
+	case 'c':
+	  /* Match locale's date and time format.  */
+#ifdef _NL_CURRENT
+	  if (s.decided != raw)
+	    {
+	      if (!recursive (_NL_CURRENT (LC_TIME, D_T_FMT)))
+		{
+		  if (s.decided == loc)
+		    return NULL;
+		  else
+		    rp = rp_backup;
+		}
+	      else
+		{
+		  if (s.decided == not &&
+		      strcmp (_NL_CURRENT (LC_TIME, D_T_FMT), HERE_D_T_FMT))
+		    s.decided = loc;
+		  s.want_xday = 1;
+		  break;
+		}
+	      s.decided = raw;
+	    }
+#endif
+	  if (!recursive (HERE_D_T_FMT))
+	    return NULL;
+	  s.want_xday = 1;
+	  break;
+	case 'C':
+	  /* Match century number.  */
+	match_century:
+	  get_number (0, 99, 2);
+	  s.century = val;
+	  s.want_xday = 1;
+	  break;
+	case 'd':
+	case 'e':
+	  /* Match day of month.  */
+	  get_number (1, 31, 2);
+	  tm->tm_mday = val;
+	  s.have_mday = 1;
+	  s.want_xday = 1;
+	  break;
+	case 'F':
+	  if (!recursive ("%Y-%m-%d"))
+	    return NULL;
+	  s.want_xday = 1;
+	  break;
+	case 'x':
+#ifdef _NL_CURRENT
+	  if (s.decided != raw)
+	    {
+	      if (!recursive (_NL_CURRENT (LC_TIME, D_FMT)))
+		{
+		  if (s.decided == loc)
+		    return NULL;
+		  else
+		    rp = rp_backup;
+		}
+	      else
+		{
+		  if (s.decided == not
+		      && strcmp (_NL_CURRENT (LC_TIME, D_FMT), HERE_D_FMT))
+		    s.decided = loc;
+		  s.want_xday = 1;
+		  break;
+		}
+	      s.decided = raw;
+	    }
+#endif
+	  /* Fall through.  */
+	case 'D':
+	  /* Match standard day format.  */
+	  if (!recursive (HERE_D_FMT))
+	    return NULL;
+	  s.want_xday = 1;
+	  break;
+	case 'k':
+	case 'H':
+	  /* Match hour in 24-hour clock.  */
+	  get_number (0, 23, 2);
+	  tm->tm_hour = val;
+	  s.have_I = 0;
+	  break;
+	case 'l':
+	  /* Match hour in 12-hour clock.  GNU extension.  */
+	case 'I':
+	  /* Match hour in 12-hour clock.  */
+	  get_number (1, 12, 2);
+	  tm->tm_hour = val % 12;
+	  s.have_I = 1;
+	  break;
+	case 'j':
+	  /* Match day number of year.  */
+	  get_number (1, 366, 3);
+	  tm->tm_yday = val - 1;
+	  s.have_yday = 1;
+	  break;
+	case 'm':
+	  /* Match number of month.  */
+	  get_number (1, 12, 2);
+	  tm->tm_mon = val - 1;
+	  s.have_mon = 1;
+	  s.want_xday = 1;
+	  break;
+	case 'M':
+	  /* Match minute.  */
+	  get_number (0, 59, 2);
+	  tm->tm_min = val;
+	  break;
+	case 'n':
+	case 't':
+	  /* Match any white space.  */
+	  while (ISSPACE (*rp))
+	    ++rp;
+	  break;
+	case 'p':
+	  /* Match locale's equivalent of AM/PM.  */
+#ifdef _NL_CURRENT
+	  if (s.decided != raw)
+	    {
+	      if (match_string (_NL_CURRENT (LC_TIME, AM_STR), rp))
+		{
+		  if (strcmp (_NL_CURRENT (LC_TIME, AM_STR), HERE_AM_STR))
+		    s.decided = loc;
+		  s.is_pm = 0;
+		  break;
+		}
+	      if (match_string (_NL_CURRENT (LC_TIME, PM_STR), rp))
+		{
+		  if (strcmp (_NL_CURRENT (LC_TIME, PM_STR), HERE_PM_STR))
+		    s.decided = loc;
+		  s.is_pm = 1;
+		  break;
+		}
+	      s.decided = raw;
+	    }
+#endif
+	  if (!match_string (HERE_AM_STR, rp))
+	    {
+	      if (match_string (HERE_PM_STR, rp))
+		s.is_pm = 1;
+	      else
+		return NULL;
+	    }
+	  else
+	    s.is_pm = 0;
+	  break;
+	case 'r':
+#ifdef _NL_CURRENT
+	  if (s.decided != raw)
+	    {
+	      if (!recursive (_NL_CURRENT (LC_TIME, T_FMT_AMPM)))
+		{
+		  if (s.decided == loc)
+		    return NULL;
+		  else
+		    rp = rp_backup;
+		}
+	      else
+		{
+		  if (s.decided == not &&
+		      strcmp (_NL_CURRENT (LC_TIME, T_FMT_AMPM),
+			      HERE_T_FMT_AMPM))
+		    s.decided = loc;
+		  break;
+		}
+	      s.decided = raw;
+	    }
+#endif
+	  if (!recursive (HERE_T_FMT_AMPM))
+	    return NULL;
+	  break;
+	case 'R':
+	  if (!recursive ("%H:%M"))
+	    return NULL;
+	  break;
+	case 's':
+	  {
+	    /* The number of seconds may be very high so we cannot use
+	       the `get_number' macro.  Instead read the number
+	       character for character and construct the result while
+	       doing this.  */
+	    time_t secs = 0;
+	    if (*rp < '0' || *rp > '9')
+	      /* We need at least one digit.  */
+	      return NULL;
+
+	    do
+	      {
+		secs *= 10;
+		secs += *rp++ - '0';
+	      }
+	    while (*rp >= '0' && *rp <= '9');
+
+	    if (localtime_r (&secs, tm) == NULL)
+	      /* Error in function.  */
+	      return NULL;
+	  }
+	  break;
+	case 'S':
+	  get_number (0, 61, 2);
+	  tm->tm_sec = val;
+	  break;
+	case 'X':
+#ifdef _NL_CURRENT
+	  if (s.decided != raw)
+	    {
+	      if (!recursive (_NL_CURRENT (LC_TIME, T_FMT)))
+		{
+		  if (s.decided == loc)
+		    return NULL;
+		  else
+		    rp = rp_backup;
+		}
+	      else
+		{
+		  if (strcmp (_NL_CURRENT (LC_TIME, T_FMT), HERE_T_FMT))
+		    s.decided = loc;
+		  break;
+		}
+	      s.decided = raw;
+	    }
+#endif
+	  /* Fall through.  */
+	case 'T':
+	  if (!recursive (HERE_T_FMT))
+	    return NULL;
+	  break;
+	case 'u':
+	  get_number (1, 7, 1);
+	  tm->tm_wday = val % 7;
+	  s.have_wday = 1;
+	  break;
+	case 'g':
+	  get_number (0, 99, 2);
+	  /* XXX This cannot determine any field in TM.  */
+	  break;
+	case 'G':
+	  if (*rp < '0' || *rp > '9')
+	    return NULL;
+	  /* XXX Ignore the number since we would need some more
+	     information to compute a real date.  */
+	  do
+	    ++rp;
+	  while (*rp >= '0' && *rp <= '9');
+	  break;
+	case 'U':
+	  get_number (0, 53, 2);
+	  s.week_no = val;
+	  s.have_uweek = 1;
+	  break;
+	case 'W':
+	  get_number (0, 53, 2);
+	  s.week_no = val;
+	  s.have_wweek = 1;
+	  break;
+	case 'V':
+	  get_number (0, 53, 2);
+	  /* XXX This cannot determine any field in TM without some
+	     information.  */
+	  break;
+	case 'w':
+	  /* Match number of weekday.  */
+	  get_number (0, 6, 1);
+	  tm->tm_wday = val;
+	  s.have_wday = 1;
+	  break;
+	case 'y':
+	match_year_in_century:
+	  /* Match year within century.  */
+	  get_number (0, 99, 2);
+	  /* The "Year 2000: The Millennium Rollover" paper suggests that
+	     values in the range 69-99 refer to the twentieth century.  */
+	  tm->tm_year = val >= 69 ? val : val + 100;
+	  /* Indicate that we want to use the century, if specified.  */
+	  s.want_century = 1;
+	  s.want_xday = 1;
+	  break;
+	case 'Y':
+	  /* Match year including century number.  */
+	  get_number (0, 9999, 4);
+	  tm->tm_year = val - 1900;
+	  s.want_century = 0;
+	  s.want_xday = 1;
+	  break;
+	case 'Z':
+	  /* Read timezone but perform no conversion.  */
+	  while (ISSPACE (*rp))
+	    rp++;
+	  while (!ISSPACE (*rp) && *rp != '\0')
+	    rp++;
+	  break;
+	case 'z':
+	  /* We recognize four formats:
+	     1. Two digits specify hours.
+	     2. Four digits specify hours and minutes.
+	     3. Two digits, ':', and two digits specify hours and minutes.
+	     4. 'Z' is equivalent to +0000.  */
+	  {
+	    val = 0;
+	    while (ISSPACE (*rp))
+	      ++rp;
+	    if (*rp == 'Z')
+	      {
+		++rp;
+		tm->tm_gmtoff = 0;
+		break;
+	      }
+	    if (*rp != '+' && *rp != '-')
+	      return NULL;
+	    bool neg = *rp++ == '-';
+	    int n = 0;
+	    while (n < 4 && *rp >= '0' && *rp <= '9')
+	      {
+		val = val * 10 + *rp++ - '0';
+		++n;
+		if (*rp == ':' && n == 2 && isdigit (*(rp + 1)))
+		  ++rp;
+	      }
+	    if (n == 2)
+	      val *= 100;
+	    else if (n != 4)
+	      /* Only two or four digits recognized.  */
+	      return NULL;
+	    else if (val % 100 >= 60)
+	      /* Minutes valid range is 0 through 59.  */
+	      return NULL;
+	    tm->tm_gmtoff = (val / 100) * 3600 + (val % 100) * 60;
+	    if (neg)
+	      tm->tm_gmtoff = -tm->tm_gmtoff;
+	  }
+	  break;
+	case 'E':
+#ifdef _NL_CURRENT
+	  switch (*fmt++)
+	    {
+	    case 'c':
+	      /* Match locale's alternate date and time format.  */
+	      if (s.decided != raw)
+		{
+		  const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT);
+
+		  if (*fmt == '\0')
+		    fmt = _NL_CURRENT (LC_TIME, D_T_FMT);
+
+		  if (!recursive (fmt))
+		    {
+		      if (s.decided == loc)
+			return NULL;
+		      else
+			rp = rp_backup;
+		    }
+		  else
+		    {
+		      if (strcmp (fmt, HERE_D_T_FMT))
+			s.decided = loc;
+		      s.want_xday = 1;
+		      break;
+		    }
+		  s.decided = raw;
+		}
+	      /* The C locale has no era information, so use the
+		 normal representation.  */
+	      if (!recursive (HERE_D_T_FMT))
+		return NULL;
+	      s.want_xday = 1;
+	      break;
+	    case 'C':
+	      if (s.decided != raw)
+		{
+		  if (s.era_cnt >= 0)
+		    {
+		      era = _nl_select_era_entry (s.era_cnt HELPER_LOCALE_ARG);
+		      if (era != NULL && match_string (era->era_name, rp))
+			{
+			  s.decided = loc;
+			  break;
+			}
+		      else
+			return NULL;
+		    }
+
+		  num_eras = _NL_CURRENT_WORD (LC_TIME,
+					       _NL_TIME_ERA_NUM_ENTRIES);
+		  for (s.era_cnt = 0; s.era_cnt < (int) num_eras;
+		       ++s.era_cnt, rp = rp_backup)
+		    {
+		      era = _nl_select_era_entry (s.era_cnt
+						  HELPER_LOCALE_ARG);
+		      if (era != NULL && match_string (era->era_name, rp))
+			{
+			  s.decided = loc;
+			  break;
+			}
+		    }
+		  if (s.era_cnt != (int) num_eras)
+		    break;
+
+		  s.era_cnt = -1;
+		  if (s.decided == loc)
+		    return NULL;
+
+		  s.decided = raw;
+		}
+	      /* The C locale has no era information, so use the
+		 normal representation.  */
+	      goto match_century;
+ 	    case 'y':
+	      if (s.decided != raw)
+		{
+		  get_number(0, 9999, 4);
+		  tm->tm_year = val;
+		  s.want_era = 1;
+		  s.want_xday = 1;
+		  s.want_century = 1;
+
+		  if (s.era_cnt >= 0)
+		    {
+		      assert (s.decided == loc);
+
+		      era = _nl_select_era_entry (s.era_cnt HELPER_LOCALE_ARG);
+		      bool match = false;
+		      if (era != NULL)
+			{
+			  int delta = ((tm->tm_year - era->offset)
+				       * era->absolute_direction);
+			  match = (delta >= 0
+				   && delta < (((int64_t) era->stop_date[0]
+						- (int64_t) era->start_date[0])
+					       * era->absolute_direction));
+			}
+		      if (! match)
+			return NULL;
+
+		      break;
+		    }
+
+		  num_eras = _NL_CURRENT_WORD (LC_TIME,
+					       _NL_TIME_ERA_NUM_ENTRIES);
+		  for (s.era_cnt = 0; s.era_cnt < (int) num_eras; ++s.era_cnt)
+		    {
+		      era = _nl_select_era_entry (s.era_cnt
+						  HELPER_LOCALE_ARG);
+		      if (era != NULL)
+			{
+			  int delta = ((tm->tm_year - era->offset)
+				       * era->absolute_direction);
+			  if (delta >= 0
+			      && delta < (((int64_t) era->stop_date[0]
+					   - (int64_t) era->start_date[0])
+					  * era->absolute_direction))
+			    {
+			      s.decided = loc;
+			      break;
+			    }
+			}
+		    }
+		  if (s.era_cnt != (int) num_eras)
+		    break;
+
+		  s.era_cnt = -1;
+		  if (s.decided == loc)
+		    return NULL;
+
+		  s.decided = raw;
+		}
+
+	      goto match_year_in_century;
+	    case 'Y':
+	      if (s.decided != raw)
+		{
+		  num_eras = _NL_CURRENT_WORD (LC_TIME,
+					       _NL_TIME_ERA_NUM_ENTRIES);
+		  for (s.era_cnt = 0; s.era_cnt < (int) num_eras;
+		       ++s.era_cnt, rp = rp_backup)
+		    {
+		      era = _nl_select_era_entry (s.era_cnt HELPER_LOCALE_ARG);
+		      if (era != NULL && recursive (era->era_format))
+			break;
+		    }
+		  if (s.era_cnt == (int) num_eras)
+		    {
+		      s.era_cnt = -1;
+		      if (s.decided == loc)
+			return NULL;
+		      else
+			rp = rp_backup;
+		    }
+		  else
+		    {
+		      s.decided = loc;
+		      break;
+		    }
+
+		  s.decided = raw;
+		}
+	      get_number (0, 9999, 4);
+	      tm->tm_year = val - 1900;
+	      s.want_century = 0;
+	      s.want_xday = 1;
+	      break;
+	    case 'x':
+	      if (s.decided != raw)
+		{
+		  const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_FMT);
+
+		  if (*fmt == '\0')
+		    fmt = _NL_CURRENT (LC_TIME, D_FMT);
+
+		  if (!recursive (fmt))
+		    {
+		      if (s.decided == loc)
+			return NULL;
+		      else
+			rp = rp_backup;
+		    }
+		  else
+		    {
+		      if (strcmp (fmt, HERE_D_FMT))
+			s.decided = loc;
+		      break;
+		    }
+		  s.decided = raw;
+		}
+	      if (!recursive (HERE_D_FMT))
+		return NULL;
+	      break;
+	    case 'X':
+	      if (s.decided != raw)
+		{
+		  const char *fmt = _NL_CURRENT (LC_TIME, ERA_T_FMT);
+
+		  if (*fmt == '\0')
+		    fmt = _NL_CURRENT (LC_TIME, T_FMT);
+
+		  if (!recursive (fmt))
+		    {
+		      if (s.decided == loc)
+			return NULL;
+		      else
+			rp = rp_backup;
+		    }
+		  else
+		    {
+		      if (strcmp (fmt, HERE_T_FMT))
+			s.decided = loc;
+		      break;
+		    }
+		  s.decided = raw;
+		}
+	      if (!recursive (HERE_T_FMT))
+		return NULL;
+	      break;
+	    default:
+	      return NULL;
+	    }
+	  break;
+#else
+	  /* We have no information about the era format.  Just use
+	     the normal format.  */
+	  if (*fmt != 'c' && *fmt != 'C' && *fmt != 'y' && *fmt != 'Y'
+	      && *fmt != 'x' && *fmt != 'X')
+	    /* This is an illegal format.  */
+	    return NULL;
+
+	  goto start_over;
+#endif
+	case 'O':
+	  switch (*fmt++)
+	    {
+	    case 'd':
+	    case 'e':
+	      /* Match day of month using alternate numeric symbols.  */
+	      get_alt_number (1, 31, 2);
+	      tm->tm_mday = val;
+	      s.have_mday = 1;
+	      s.want_xday = 1;
+	      break;
+	    case 'H':
+	      /* Match hour in 24-hour clock using alternate numeric
+		 symbols.  */
+	      get_alt_number (0, 23, 2);
+	      tm->tm_hour = val;
+	      s.have_I = 0;
+	      break;
+	    case 'I':
+	      /* Match hour in 12-hour clock using alternate numeric
+		 symbols.  */
+	      get_alt_number (1, 12, 2);
+	      tm->tm_hour = val % 12;
+	      s.have_I = 1;
+	      break;
+	    case 'm':
+	      /* Match month using alternate numeric symbols.  */
+	      get_alt_number (1, 12, 2);
+	      tm->tm_mon = val - 1;
+	      s.have_mon = 1;
+	      s.want_xday = 1;
+	      break;
+	    case 'M':
+	      /* Match minutes using alternate numeric symbols.  */
+	      get_alt_number (0, 59, 2);
+	      tm->tm_min = val;
+	      break;
+	    case 'S':
+	      /* Match seconds using alternate numeric symbols.  */
+	      get_alt_number (0, 61, 2);
+	      tm->tm_sec = val;
+	      break;
+	    case 'U':
+	      get_alt_number (0, 53, 2);
+	      s.week_no = val;
+	      s.have_uweek = 1;
+	      break;
+	    case 'W':
+	      get_alt_number (0, 53, 2);
+	      s.week_no = val;
+	      s.have_wweek = 1;
+	      break;
+	    case 'V':
+	      get_alt_number (0, 53, 2);
+	      /* XXX This cannot determine any field in TM without
+		 further information.  */
+	      break;
+	    case 'w':
+	      /* Match number of weekday using alternate numeric symbols.  */
+	      get_alt_number (0, 6, 1);
+	      tm->tm_wday = val;
+	      s.have_wday = 1;
+	      break;
+	    case 'y':
+	      /* Match year within century using alternate numeric symbols.  */
+	      get_alt_number (0, 99, 2);
+	      tm->tm_year = val >= 69 ? val : val + 100;
+	      s.want_xday = 1;
+	      break;
+	    default:
+	      return NULL;
+	    }
+	  break;
+	default:
+	  return NULL;
+	}
+    }
+
+  if (statep != NULL)
+    {
+      /* Recursive invocation, returning success, so
+	 update parent's struct tm and state.  */
+      *(struct __strptime_state *) statep = s;
+      *tmp = tmb;
+      return (char *) rp;
+    }
+
+  if (s.have_I && s.is_pm)
+    tm->tm_hour += 12;
+
+  if (s.century != -1)
+    {
+      if (s.want_century)
+	tm->tm_year = tm->tm_year % 100 + (s.century - 19) * 100;
+      else
+	/* Only the century, but not the year.  Strange, but so be it.  */
+	tm->tm_year = (s.century - 19) * 100;
+    }
+
+  if (s.era_cnt != -1)
+    {
+      era = _nl_select_era_entry (s.era_cnt HELPER_LOCALE_ARG);
+      if (era == NULL)
+	return NULL;
+      if (s.want_era)
+	tm->tm_year = (era->start_date[0]
+		       + ((tm->tm_year - era->offset)
+			  * era->absolute_direction));
+      else
+	/* Era start year assumed.  */
+	tm->tm_year = era->start_date[0];
+    }
+  else
+    if (s.want_era)
+      {
+	/* No era found but we have seen an E modifier.  Rectify some
+	   values.  */
+	if (s.want_century && s.century == -1 && tm->tm_year < 69)
+	  tm->tm_year += 100;
+      }
+
+  if (s.want_xday && !s.have_wday)
+    {
+      if ( !(s.have_mon && s.have_mday) && s.have_yday)
+	{
+	  /* We don't have tm_mon and/or tm_mday, compute them.  */
+	  int t_mon = 0;
+	  while (__mon_yday[__isleap(1900 + tm->tm_year)][t_mon] <= tm->tm_yday)
+	      t_mon++;
+	  if (!s.have_mon)
+	      tm->tm_mon = t_mon - 1;
+	  if (!s.have_mday)
+	      tm->tm_mday =
+		(tm->tm_yday
+		 - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1);
+	  s.have_mon = 1;
+	  s.have_mday = 1;
+	}
+      /* Don't crash in day_of_the_week if tm_mon is uninitialized.  */
+      if (s.have_mon || (unsigned) tm->tm_mon <= 11)
+	day_of_the_week (tm);
+    }
+
+  if (s.want_xday && !s.have_yday && (s.have_mon || (unsigned) tm->tm_mon <= 11))
+    day_of_the_year (tm);
+
+  if ((s.have_uweek || s.have_wweek) && s.have_wday)
+    {
+      int save_wday = tm->tm_wday;
+      int save_mday = tm->tm_mday;
+      int save_mon = tm->tm_mon;
+      int w_offset = s.have_uweek ? 0 : 1;
+
+      tm->tm_mday = 1;
+      tm->tm_mon = 0;
+      day_of_the_week (tm);
+      if (s.have_mday)
+	tm->tm_mday = save_mday;
+      if (s.have_mon)
+	tm->tm_mon = save_mon;
+
+      if (!s.have_yday)
+	tm->tm_yday = ((7 - (tm->tm_wday - w_offset)) % 7
+		       + (s.week_no - 1) * 7
+		       + (save_wday - w_offset + 7) % 7);
+
+      if (!s.have_mday || !s.have_mon)
+	{
+	  int t_mon = 0;
+	  while (__mon_yday[__isleap(1900 + tm->tm_year)][t_mon]
+		 <= tm->tm_yday)
+	    t_mon++;
+	  if (!s.have_mon)
+	    tm->tm_mon = t_mon - 1;
+	  if (!s.have_mday)
+	      tm->tm_mday =
+		(tm->tm_yday
+		 - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1);
+	}
+
+      tm->tm_wday = save_wday;
+    }
+
+  return (char *) rp;
+}
+
+
+char *
+strptime (const char *buf, const char *format, struct tm *tm LOCALE_PARAM)
+{
+  return __strptime_internal (buf, format, tm, NULL LOCALE_ARG);
+}
+
+#ifdef _LIBC
+weak_alias (__strptime_l, strptime_l)
+#endif
diff --git a/ap/libc/glibc/glibc-2.23/time/sys/time.h b/ap/libc/glibc/glibc-2.23/time/sys/time.h
new file mode 100644
index 0000000..545de6f
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/sys/time.h
@@ -0,0 +1,191 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_TIME_H
+#define _SYS_TIME_H	1
+
+#include <features.h>
+
+#include <bits/types.h>
+#define __need_time_t
+#include <time.h>
+#define __need_timeval
+#include <bits/time.h>
+
+#include <sys/select.h>
+
+#ifndef __suseconds_t_defined
+typedef __suseconds_t suseconds_t;
+# define __suseconds_t_defined
+#endif
+
+
+__BEGIN_DECLS
+
+#ifdef __USE_GNU
+/* Macros for converting between `struct timeval' and `struct timespec'.  */
+# define TIMEVAL_TO_TIMESPEC(tv, ts) {                                   \
+	(ts)->tv_sec = (tv)->tv_sec;                                    \
+	(ts)->tv_nsec = (tv)->tv_usec * 1000;                           \
+}
+# define TIMESPEC_TO_TIMEVAL(tv, ts) {                                   \
+	(tv)->tv_sec = (ts)->tv_sec;                                    \
+	(tv)->tv_usec = (ts)->tv_nsec / 1000;                           \
+}
+#endif
+
+
+#ifdef __USE_MISC
+/* Structure crudely representing a timezone.
+   This is obsolete and should never be used.  */
+struct timezone
+  {
+    int tz_minuteswest;		/* Minutes west of GMT.  */
+    int tz_dsttime;		/* Nonzero if DST is ever in effect.  */
+  };
+
+typedef struct timezone *__restrict __timezone_ptr_t;
+#else
+typedef void *__restrict __timezone_ptr_t;
+#endif
+
+/* Get the current time of day and timezone information,
+   putting it into *TV and *TZ.  If TZ is NULL, *TZ is not filled.
+   Returns 0 on success, -1 on errors.
+   NOTE: This form of timezone information is obsolete.
+   Use the functions and variables declared in <time.h> instead.  */
+extern int gettimeofday (struct timeval *__restrict __tv,
+			 __timezone_ptr_t __tz) __THROW __nonnull ((1));
+
+#ifdef __USE_MISC
+/* Set the current time of day and timezone information.
+   This call is restricted to the super-user.  */
+extern int settimeofday (const struct timeval *__tv,
+			 const struct timezone *__tz)
+     __THROW;
+
+/* Adjust the current time of day by the amount in DELTA.
+   If OLDDELTA is not NULL, it is filled in with the amount
+   of time adjustment remaining to be done from the last `adjtime' call.
+   This call is restricted to the super-user.  */
+extern int adjtime (const struct timeval *__delta,
+		    struct timeval *__olddelta) __THROW;
+#endif
+
+
+/* Values for the first argument to `getitimer' and `setitimer'.  */
+enum __itimer_which
+  {
+    /* Timers run in real time.  */
+    ITIMER_REAL = 0,
+#define ITIMER_REAL ITIMER_REAL
+    /* Timers run only when the process is executing.  */
+    ITIMER_VIRTUAL = 1,
+#define ITIMER_VIRTUAL ITIMER_VIRTUAL
+    /* Timers run when the process is executing and when
+       the system is executing on behalf of the process.  */
+    ITIMER_PROF = 2
+#define ITIMER_PROF ITIMER_PROF
+  };
+
+/* Type of the second argument to `getitimer' and
+   the second and third arguments `setitimer'.  */
+struct itimerval
+  {
+    /* Value to put into `it_value' when the timer expires.  */
+    struct timeval it_interval;
+    /* Time to the next timer expiration.  */
+    struct timeval it_value;
+  };
+
+#if defined __USE_GNU && !defined __cplusplus
+/* Use the nicer parameter type only in GNU mode and not for C++ since the
+   strict C++ rules prevent the automatic promotion.  */
+typedef enum __itimer_which __itimer_which_t;
+#else
+typedef int __itimer_which_t;
+#endif
+
+/* Set *VALUE to the current setting of timer WHICH.
+   Return 0 on success, -1 on errors.  */
+extern int getitimer (__itimer_which_t __which,
+		      struct itimerval *__value) __THROW;
+
+/* Set the timer WHICH to *NEW.  If OLD is not NULL,
+   set *OLD to the old value of timer WHICH.
+   Returns 0 on success, -1 on errors.  */
+extern int setitimer (__itimer_which_t __which,
+		      const struct itimerval *__restrict __new,
+		      struct itimerval *__restrict __old) __THROW;
+
+/* Change the access time of FILE to TVP[0] and the modification time of
+   FILE to TVP[1].  If TVP is a null pointer, use the current time instead.
+   Returns 0 on success, -1 on errors.  */
+extern int utimes (const char *__file, const struct timeval __tvp[2])
+     __THROW __nonnull ((1));
+
+#ifdef __USE_MISC
+/* Same as `utimes', but does not follow symbolic links.  */
+extern int lutimes (const char *__file, const struct timeval __tvp[2])
+     __THROW __nonnull ((1));
+
+/* Same as `utimes', but takes an open file descriptor instead of a name.  */
+extern int futimes (int __fd, const struct timeval __tvp[2]) __THROW;
+#endif
+
+#ifdef __USE_GNU
+/* Change the access time of FILE relative to FD to TVP[0] and the
+   modification time of FILE to TVP[1].  If TVP is a null pointer, use
+   the current time instead.  Returns 0 on success, -1 on errors.  */
+extern int futimesat (int __fd, const char *__file,
+		      const struct timeval __tvp[2]) __THROW;
+#endif
+
+
+#ifdef __USE_MISC
+/* Convenience macros for operations on timevals.
+   NOTE: `timercmp' does not work for >= or <=.  */
+# define timerisset(tvp)	((tvp)->tv_sec || (tvp)->tv_usec)
+# define timerclear(tvp)	((tvp)->tv_sec = (tvp)->tv_usec = 0)
+# define timercmp(a, b, CMP) 						      \
+  (((a)->tv_sec == (b)->tv_sec) ? 					      \
+   ((a)->tv_usec CMP (b)->tv_usec) : 					      \
+   ((a)->tv_sec CMP (b)->tv_sec))
+# define timeradd(a, b, result)						      \
+  do {									      \
+    (result)->tv_sec = (a)->tv_sec + (b)->tv_sec;			      \
+    (result)->tv_usec = (a)->tv_usec + (b)->tv_usec;			      \
+    if ((result)->tv_usec >= 1000000)					      \
+      {									      \
+	++(result)->tv_sec;						      \
+	(result)->tv_usec -= 1000000;					      \
+      }									      \
+  } while (0)
+# define timersub(a, b, result)						      \
+  do {									      \
+    (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;			      \
+    (result)->tv_usec = (a)->tv_usec - (b)->tv_usec;			      \
+    if ((result)->tv_usec < 0) {					      \
+      --(result)->tv_sec;						      \
+      (result)->tv_usec += 1000000;					      \
+    }									      \
+  } while (0)
+#endif	/* Misc.  */
+
+__END_DECLS
+
+#endif /* sys/time.h */
diff --git a/ap/libc/glibc/glibc-2.23/time/sys/timeb.h b/ap/libc/glibc/glibc-2.23/time/sys/timeb.h
new file mode 100644
index 0000000..41d71bf
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/sys/timeb.h
@@ -0,0 +1,45 @@
+/* Copyright (C) 1994-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_TIMEB_H
+#define _SYS_TIMEB_H	1
+
+#include <features.h>
+
+#define __need_time_t
+#include <time.h>
+
+
+__BEGIN_DECLS
+
+/* Structure returned by the `ftime' function.  */
+
+struct timeb
+  {
+    time_t time;		/* Seconds since epoch, as from `time'.  */
+    unsigned short int millitm;	/* Additional milliseconds.  */
+    short int timezone;		/* Minutes west of GMT.  */
+    short int dstflag;		/* Nonzero if Daylight Savings Time used.  */
+  };
+
+/* Fill in TIMEBUF with information about the current time.  */
+
+extern int ftime (struct timeb *__timebuf);
+
+__END_DECLS
+
+#endif	/* sys/timeb.h */
diff --git a/ap/libc/glibc/glibc-2.23/time/test_time.c b/ap/libc/glibc/glibc-2.23/time/test_time.c
new file mode 100644
index 0000000..b0abd68
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/test_time.c
@@ -0,0 +1,115 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+
+int
+main (int argc, char **argv)
+{
+  time_t t;
+  struct tm *tp;
+  struct tm tbuf;
+  int lose = 0;
+
+  --argc;
+  ++argv;
+
+  do
+    {
+      char buf[BUFSIZ];
+      if (argc > 0)
+	{
+	  static char buf[BUFSIZ];
+	  sprintf(buf, "TZ=%s", *argv);
+	  if (putenv(buf))
+	    {
+	      puts("putenv failed.");
+	      lose = 1;
+	    }
+	  else
+	    puts (buf);
+	}
+      tzset();
+      tbuf.tm_year = 72;
+      tbuf.tm_mon = 0;
+      tbuf.tm_mday = 31;
+      tbuf.tm_hour = 6;
+      tbuf.tm_min = 14;
+      tbuf.tm_sec = 50;
+      tbuf.tm_isdst = -1;
+    doit:;
+      t = mktime(&tbuf);
+      if (t == (time_t) -1)
+	{
+	  puts("mktime() failed?");
+	  lose = 1;
+	}
+      tp = localtime(&t);
+      if (tp == NULL)
+	{
+	  puts("localtime() failed.");
+	  lose = 1;
+	}
+      else if (strftime(buf, sizeof(buf), "%a %b %d %X %Z %Y", tp) == 0)
+	{
+	  puts("strftime() failed.");
+	  lose = 1;
+	}
+      else
+	puts(buf);
+      if (tbuf.tm_year == 101)
+	{
+	  tbuf.tm_year = 97;
+	  tbuf.tm_mon = 0;
+	  goto doit;
+	}
+      ++argv;
+    } while (--argc > 0);
+
+  {
+#define	SIZE	256
+    char buffer[SIZE];
+    time_t curtime;
+    struct tm *loctime;
+
+    curtime = time (NULL);
+
+    loctime = localtime (&curtime);
+
+    fputs (asctime (loctime), stdout);
+
+    strftime (buffer, SIZE, "Today is %A, %B %d.\n", loctime);
+    fputs (buffer, stdout);
+    strftime (buffer, SIZE, "The time is %I:%M %p.\n", loctime);
+    fputs (buffer, stdout);
+
+    loctime->tm_year = 72;
+    loctime->tm_mon = 8;
+    loctime->tm_mday = 12;
+    loctime->tm_hour = 20;
+    loctime->tm_min = 49;
+    loctime->tm_sec = 05;
+    curtime = mktime (loctime);
+    strftime (buffer, SIZE, "%D %T was %w the %jth.\n", loctime);
+    fputs (buffer, stdout);
+  }
+
+  return (lose ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/time.c b/ap/libc/glibc/glibc-2.23/time/time.c
new file mode 100644
index 0000000..ec49e99
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/time.c
@@ -0,0 +1,33 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <time.h>
+
+/* Return the time now, and store it in *TIMER if not NULL.  */
+time_t
+time (time_t *timer)
+{
+  __set_errno (ENOSYS);
+
+  if (timer != NULL)
+    *timer = (time_t) -1;
+  return (time_t) -1;
+}
+libc_hidden_def (time)
+
+stub_warning (time)
diff --git a/ap/libc/glibc/glibc-2.23/time/time.h b/ap/libc/glibc/glibc-2.23/time/time.h
new file mode 100644
index 0000000..cc93917
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/time.h
@@ -0,0 +1,434 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/*
+ *	ISO C99 Standard: 7.23 Date and time	<time.h>
+ */
+
+#ifndef	_TIME_H
+
+#if (! defined __need_time_t && !defined __need_clock_t && \
+     ! defined __need_timespec)
+# define _TIME_H	1
+# include <features.h>
+
+__BEGIN_DECLS
+
+#endif
+
+#ifdef	_TIME_H
+/* Get size_t and NULL from <stddef.h>.  */
+# define __need_size_t
+# define __need_NULL
+# include <stddef.h>
+
+/* This defines CLOCKS_PER_SEC, which is the number of processor clock
+   ticks per second.  */
+# include <bits/time.h>
+
+/* This is the obsolete POSIX.1-1988 name for the same constant.  */
+# if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K
+#  ifndef CLK_TCK
+#   define CLK_TCK	CLOCKS_PER_SEC
+#  endif
+# endif
+
+#endif /* <time.h> included.  */
+
+#if !defined __clock_t_defined && (defined _TIME_H || defined __need_clock_t)
+# define __clock_t_defined	1
+
+# include <bits/types.h>
+
+__BEGIN_NAMESPACE_STD
+/* Returned by `clock'.  */
+typedef __clock_t clock_t;
+__END_NAMESPACE_STD
+#if defined __USE_XOPEN || defined __USE_POSIX
+__USING_NAMESPACE_STD(clock_t)
+#endif
+
+#endif /* clock_t not defined and <time.h> or need clock_t.  */
+#undef	__need_clock_t
+
+#if !defined __time_t_defined && (defined _TIME_H || defined __need_time_t)
+# define __time_t_defined	1
+
+# include <bits/types.h>
+
+__BEGIN_NAMESPACE_STD
+/* Returned by `time'.  */
+typedef __time_t time_t;
+__END_NAMESPACE_STD
+#ifdef __USE_POSIX
+__USING_NAMESPACE_STD(time_t)
+#endif
+
+#endif /* time_t not defined and <time.h> or need time_t.  */
+#undef	__need_time_t
+
+#if !defined __clockid_t_defined && \
+   ((defined _TIME_H && defined __USE_POSIX199309) || defined __need_clockid_t)
+# define __clockid_t_defined	1
+
+# include <bits/types.h>
+
+/* Clock ID used in clock and timer functions.  */
+typedef __clockid_t clockid_t;
+
+#endif /* clockid_t not defined and <time.h> or need clockid_t.  */
+#undef	__clockid_time_t
+
+#if !defined __timer_t_defined && \
+    ((defined _TIME_H && defined __USE_POSIX199309) || defined __need_timer_t)
+# define __timer_t_defined	1
+
+# include <bits/types.h>
+
+/* Timer ID returned by `timer_create'.  */
+typedef __timer_t timer_t;
+
+#endif /* timer_t not defined and <time.h> or need timer_t.  */
+#undef	__need_timer_t
+
+
+#if (!defined __timespec_defined					\
+     && ((defined _TIME_H						\
+	  && (defined __USE_POSIX199309					\
+	      || defined __USE_ISOC11))					\
+	 || defined __need_timespec))
+# define __timespec_defined	1
+
+# include <bits/types.h>	/* This defines __time_t for us.  */
+
+/* POSIX.1b structure for a time value.  This is like a `struct timeval' but
+   has nanoseconds instead of microseconds.  */
+struct timespec
+  {
+    __time_t tv_sec;		/* Seconds.  */
+    __syscall_slong_t tv_nsec;	/* Nanoseconds.  */
+  };
+
+#endif /* timespec not defined and <time.h> or need timespec.  */
+#undef	__need_timespec
+
+
+#ifdef	_TIME_H
+__BEGIN_NAMESPACE_STD
+/* Used by other time functions.  */
+struct tm
+{
+  int tm_sec;			/* Seconds.	[0-60] (1 leap second) */
+  int tm_min;			/* Minutes.	[0-59] */
+  int tm_hour;			/* Hours.	[0-23] */
+  int tm_mday;			/* Day.		[1-31] */
+  int tm_mon;			/* Month.	[0-11] */
+  int tm_year;			/* Year	- 1900.  */
+  int tm_wday;			/* Day of week.	[0-6] */
+  int tm_yday;			/* Days in year.[0-365]	*/
+  int tm_isdst;			/* DST.		[-1/0/1]*/
+
+# ifdef	__USE_MISC
+  long int tm_gmtoff;		/* Seconds east of UTC.  */
+  const char *tm_zone;		/* Timezone abbreviation.  */
+# else
+  long int __tm_gmtoff;		/* Seconds east of UTC.  */
+  const char *__tm_zone;	/* Timezone abbreviation.  */
+# endif
+};
+__END_NAMESPACE_STD
+#if defined __USE_XOPEN || defined __USE_POSIX
+__USING_NAMESPACE_STD(tm)
+#endif
+
+
+# ifdef __USE_POSIX199309
+/* POSIX.1b structure for timer start values and intervals.  */
+struct itimerspec
+  {
+    struct timespec it_interval;
+    struct timespec it_value;
+  };
+
+/* We can use a simple forward declaration.  */
+struct sigevent;
+
+# endif	/* POSIX.1b */
+
+# ifdef __USE_XOPEN2K
+#  ifndef __pid_t_defined
+typedef __pid_t pid_t;
+#   define __pid_t_defined
+#  endif
+# endif
+
+
+# ifdef __USE_ISOC11
+/* Time base values for timespec_get.  */
+# define TIME_UTC 1
+# endif
+
+
+__BEGIN_NAMESPACE_STD
+/* Time used by the program so far (user time + system time).
+   The result / CLOCKS_PER_SECOND is program time in seconds.  */
+extern clock_t clock (void) __THROW;
+
+/* Return the current time and put it in *TIMER if TIMER is not NULL.  */
+extern time_t time (time_t *__timer) __THROW;
+
+/* Return the difference between TIME1 and TIME0.  */
+extern double difftime (time_t __time1, time_t __time0)
+     __THROW __attribute__ ((__const__));
+
+/* Return the `time_t' representation of TP and normalize TP.  */
+extern time_t mktime (struct tm *__tp) __THROW;
+
+
+/* Format TP into S according to FORMAT.
+   Write no more than MAXSIZE characters and return the number
+   of characters written, or 0 if it would exceed MAXSIZE.  */
+extern size_t strftime (char *__restrict __s, size_t __maxsize,
+			const char *__restrict __format,
+			const struct tm *__restrict __tp) __THROW;
+__END_NAMESPACE_STD
+
+# ifdef __USE_XOPEN
+/* Parse S according to FORMAT and store binary time information in TP.
+   The return value is a pointer to the first unparsed character in S.  */
+extern char *strptime (const char *__restrict __s,
+		       const char *__restrict __fmt, struct tm *__tp)
+     __THROW;
+# endif
+
+# ifdef __USE_XOPEN2K8
+/* Similar to the two functions above but take the information from
+   the provided locale and not the global locale.  */
+# include <xlocale.h>
+
+extern size_t strftime_l (char *__restrict __s, size_t __maxsize,
+			  const char *__restrict __format,
+			  const struct tm *__restrict __tp,
+			  __locale_t __loc) __THROW;
+# endif
+
+# ifdef __USE_GNU
+extern char *strptime_l (const char *__restrict __s,
+			 const char *__restrict __fmt, struct tm *__tp,
+			 __locale_t __loc) __THROW;
+# endif
+
+
+__BEGIN_NAMESPACE_STD
+/* Return the `struct tm' representation of *TIMER
+   in Universal Coordinated Time (aka Greenwich Mean Time).  */
+extern struct tm *gmtime (const time_t *__timer) __THROW;
+
+/* Return the `struct tm' representation
+   of *TIMER in the local timezone.  */
+extern struct tm *localtime (const time_t *__timer) __THROW;
+__END_NAMESPACE_STD
+
+# ifdef __USE_POSIX
+/* Return the `struct tm' representation of *TIMER in UTC,
+   using *TP to store the result.  */
+extern struct tm *gmtime_r (const time_t *__restrict __timer,
+			    struct tm *__restrict __tp) __THROW;
+
+/* Return the `struct tm' representation of *TIMER in local time,
+   using *TP to store the result.  */
+extern struct tm *localtime_r (const time_t *__restrict __timer,
+			       struct tm *__restrict __tp) __THROW;
+# endif	/* POSIX */
+
+__BEGIN_NAMESPACE_STD
+/* Return a string of the form "Day Mon dd hh:mm:ss yyyy\n"
+   that is the representation of TP in this format.  */
+extern char *asctime (const struct tm *__tp) __THROW;
+
+/* Equivalent to `asctime (localtime (timer))'.  */
+extern char *ctime (const time_t *__timer) __THROW;
+__END_NAMESPACE_STD
+
+# ifdef __USE_POSIX
+/* Reentrant versions of the above functions.  */
+
+/* Return in BUF a string of the form "Day Mon dd hh:mm:ss yyyy\n"
+   that is the representation of TP in this format.  */
+extern char *asctime_r (const struct tm *__restrict __tp,
+			char *__restrict __buf) __THROW;
+
+/* Equivalent to `asctime_r (localtime_r (timer, *TMP*), buf)'.  */
+extern char *ctime_r (const time_t *__restrict __timer,
+		      char *__restrict __buf) __THROW;
+# endif	/* POSIX */
+
+
+/* Defined in localtime.c.  */
+extern char *__tzname[2];	/* Current timezone names.  */
+extern int __daylight;		/* If daylight-saving time is ever in use.  */
+extern long int __timezone;	/* Seconds west of UTC.  */
+
+
+# ifdef	__USE_POSIX
+/* Same as above.  */
+extern char *tzname[2];
+
+/* Set time conversion information from the TZ environment variable.
+   If TZ is not defined, a locale-dependent default is used.  */
+extern void tzset (void) __THROW;
+# endif
+
+# if defined __USE_MISC || defined __USE_XOPEN
+extern int daylight;
+extern long int timezone;
+# endif
+
+# ifdef __USE_MISC
+/* Set the system time to *WHEN.
+   This call is restricted to the superuser.  */
+extern int stime (const time_t *__when) __THROW;
+# endif
+
+
+/* Nonzero if YEAR is a leap year (every 4 years,
+   except every 100th isn't, and every 400th is).  */
+# define __isleap(year)	\
+  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+
+
+# ifdef __USE_MISC
+/* Miscellaneous functions many Unices inherited from the public domain
+   localtime package.  These are included only for compatibility.  */
+
+/* Like `mktime', but for TP represents Universal Time, not local time.  */
+extern time_t timegm (struct tm *__tp) __THROW;
+
+/* Another name for `mktime'.  */
+extern time_t timelocal (struct tm *__tp) __THROW;
+
+/* Return the number of days in YEAR.  */
+extern int dysize (int __year) __THROW  __attribute__ ((__const__));
+# endif
+
+
+# ifdef __USE_POSIX199309
+/* Pause execution for a number of nanoseconds.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int nanosleep (const struct timespec *__requested_time,
+		      struct timespec *__remaining);
+
+
+/* Get resolution of clock CLOCK_ID.  */
+extern int clock_getres (clockid_t __clock_id, struct timespec *__res) __THROW;
+
+/* Get current value of clock CLOCK_ID and store it in TP.  */
+extern int clock_gettime (clockid_t __clock_id, struct timespec *__tp) __THROW;
+
+/* Set clock CLOCK_ID to value TP.  */
+extern int clock_settime (clockid_t __clock_id, const struct timespec *__tp)
+     __THROW;
+
+#  ifdef __USE_XOPEN2K
+/* High-resolution sleep with the specified clock.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int clock_nanosleep (clockid_t __clock_id, int __flags,
+			    const struct timespec *__req,
+			    struct timespec *__rem);
+
+/* Return clock ID for CPU-time clock.  */
+extern int clock_getcpuclockid (pid_t __pid, clockid_t *__clock_id) __THROW;
+#  endif
+
+
+/* Create new per-process timer using CLOCK_ID.  */
+extern int timer_create (clockid_t __clock_id,
+			 struct sigevent *__restrict __evp,
+			 timer_t *__restrict __timerid) __THROW;
+
+/* Delete timer TIMERID.  */
+extern int timer_delete (timer_t __timerid) __THROW;
+
+/* Set timer TIMERID to VALUE, returning old value in OVALUE.  */
+extern int timer_settime (timer_t __timerid, int __flags,
+			  const struct itimerspec *__restrict __value,
+			  struct itimerspec *__restrict __ovalue) __THROW;
+
+/* Get current value of timer TIMERID and store it in VALUE.  */
+extern int timer_gettime (timer_t __timerid, struct itimerspec *__value)
+     __THROW;
+
+/* Get expiration overrun for timer TIMERID.  */
+extern int timer_getoverrun (timer_t __timerid) __THROW;
+# endif
+
+
+# ifdef __USE_ISOC11
+/* Set TS to calendar time based in time base BASE.  */
+extern int timespec_get (struct timespec *__ts, int __base)
+     __THROW __nonnull ((1));
+# endif
+
+
+# ifdef __USE_XOPEN_EXTENDED
+/* Set to one of the following values to indicate an error.
+     1  the DATEMSK environment variable is null or undefined,
+     2  the template file cannot be opened for reading,
+     3  failed to get file status information,
+     4  the template file is not a regular file,
+     5  an error is encountered while reading the template file,
+     6  memory allication failed (not enough memory available),
+     7  there is no line in the template that matches the input,
+     8  invalid input specification Example: February 31 or a time is
+	specified that can not be represented in a time_t (representing
+	the time in seconds since 00:00:00 UTC, January 1, 1970) */
+extern int getdate_err;
+
+/* Parse the given string as a date specification and return a value
+   representing the value.  The templates from the file identified by
+   the environment variable DATEMSK are used.  In case of an error
+   `getdate_err' is set.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+extern struct tm *getdate (const char *__string);
+# endif
+
+# ifdef __USE_GNU
+/* Since `getdate' is not reentrant because of the use of `getdate_err'
+   and the static buffer to return the result in, we provide a thread-safe
+   variant.  The functionality is the same.  The result is returned in
+   the buffer pointed to by RESBUFP and in case of an error the return
+   value is != 0 with the same values as given above for `getdate_err'.
+
+   This function is not part of POSIX and therefore no official
+   cancellation point.  But due to similarity with an POSIX interface
+   or due to the implementation it is a cancellation point and
+   therefore not marked with __THROW.  */
+extern int getdate_r (const char *__restrict __string,
+		      struct tm *__restrict __resbufp);
+# endif
+
+__END_DECLS
+
+#endif /* <time.h> included.  */
+
+#endif /* <time.h> not already included.  */
diff --git a/ap/libc/glibc/glibc-2.23/time/timegm.c b/ap/libc/glibc/glibc-2.23/time/timegm.c
new file mode 100644
index 0000000..c5656e8
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/timegm.c
@@ -0,0 +1,47 @@
+/* Convert UTC calendar time to simple time.  Like mktime but assumes UTC.
+
+   Copyright (C) 1994-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef _LIBC
+# include <time.h>
+#else
+# include "timegm.h"
+
+/* Portable standalone applications should supply a "time_r.h" that
+   declares a POSIX-compliant gmtime_r, for the benefit of older
+   implementations that lack gmtime_r or have a nonstandard one.
+   See the gnulib time_r module for one way to implement this.  */
+# include <time_r.h>
+# undef __gmtime_r
+# define __gmtime_r gmtime_r
+time_t __mktime_internal (struct tm *,
+			  struct tm * (*) (time_t const *, struct tm *),
+			  time_t *);
+#endif
+
+time_t
+timegm (struct tm *tmp)
+{
+  static time_t gmtime_offset;
+  tmp->tm_isdst = 0;
+  return __mktime_internal (tmp, __gmtime_r, &gmtime_offset);
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/timespec_get.c b/ap/libc/glibc/glibc-2.23/time/timespec_get.c
new file mode 100644
index 0000000..fb9cc07
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/timespec_get.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 2011-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+
+
+/* Set TS to calendar time based in time base BASE.  */
+int
+timespec_get (struct timespec *ts, int base)
+{
+  switch (base)
+    {
+    case TIME_UTC:
+      /* Not supported.  */
+      return 0;
+
+    default:
+      return 0;
+    }
+
+  return base;
+}
+stub_warning (timespec_get)
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-ftime.c b/ap/libc/glibc/glibc-2.23/time/tst-ftime.c
new file mode 100644
index 0000000..9b8cb78
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-ftime.c
@@ -0,0 +1,59 @@
+/* Verify that ftime is sane.
+   Copyright (C) 2014-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/timeb.h>
+#include <stdio.h>
+
+static int
+do_test (void)
+{
+  struct timeb prev, curr = {.time = 0, .millitm = 0};
+  int sec = 0;
+
+  while (sec != 3)
+    {
+      prev = curr;
+
+      if (ftime (&curr))
+        {
+          printf ("ftime returned an error\n");
+          return 1;
+        }
+
+      if (curr.time < prev.time)
+        {
+          printf ("ftime's time flowed backwards\n");
+          return 1;
+        }
+
+      if (curr.time == prev.time
+          && curr.millitm < prev.millitm)
+        {
+          printf ("ftime's millitm flowed backwards\n");
+          return 1;
+        }
+
+      if (curr.time > prev.time)
+        sec ++;
+    }
+  return 0;
+}
+
+#define TIMEOUT 3
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-ftime_l.c b/ap/libc/glibc/glibc-2.23/time/tst-ftime_l.c
new file mode 100644
index 0000000..6690efe
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-ftime_l.c
@@ -0,0 +1,129 @@
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <wchar.h>
+
+
+static int
+do_test (void)
+{
+  locale_t l;
+  locale_t old;
+  struct tm tm;
+  char buf[1000];
+  wchar_t wbuf[1000];
+  int result = 0;
+  size_t n;
+
+  l = newlocale (LC_ALL_MASK, "de_DE.ISO-8859-1", NULL);
+  if (l == NULL)
+    {
+      puts ("newlocale failed");
+      exit (1);
+    }
+
+  memset (&tm, '\0', sizeof (tm));
+
+  tm.tm_year = 102;
+  tm.tm_mon = 2;
+  tm.tm_mday = 1;
+
+  if (strftime (buf, sizeof (buf), "%e %^B %Y", &tm) == 0)
+    {
+      puts ("initial strftime failed");
+      exit (1);
+    }
+  if (strcmp (buf, " 1 MARCH 2002") != 0)
+    {
+      printf ("initial strftime: expected \"%s\", got \"%s\"\n",
+	      " 1 MARCH 2002", buf);
+      result = 1;
+    }
+  else
+    printf ("got \"%s\"\n", buf);
+
+  /* Now using the extended locale model.  */
+  if (strftime_l (buf, sizeof (buf), "%e %^B %Y", &tm, l) == 0)
+    {
+      puts ("strftime_l failed");
+      result = 1;
+    }
+  else if (strcmp (buf, " 1 M\xc4RZ 2002") != 0)
+    {
+      printf ("strftime_l: expected \"%s\", got \"%s\"\n",
+	      " 1 M\xc4RZ 2002", buf);
+      result = 1;
+    }
+  else
+    {
+      setlocale (LC_ALL, "de_DE.ISO-8859-1");
+      printf ("got \"%s\"\n", buf);
+      setlocale (LC_ALL, "C");
+    }
+
+  /* And the wide character version.  */
+  if (wcsftime_l (wbuf, sizeof (wbuf) / sizeof (wbuf[0]), L"%e %^B %Y", &tm, l)
+      == 0)
+    {
+      puts ("wcsftime_l failed");
+      result = 1;
+    }
+  else if (wcscmp (wbuf, L" 1 M\x00c4RZ 2002") != 0)
+    {
+      printf ("wcsftime_l: expected \"%ls\", got \"%ls\"\n",
+	      L" 1 M\x00c4RZ 2002", wbuf);
+      result = 1;
+    }
+  else
+    {
+      setlocale (LC_ALL, "de_DE.ISO-8859-1");
+      printf ("got \"%ls\"\n", wbuf);
+      setlocale (LC_ALL, "C");
+    }
+
+  old = uselocale (l);
+
+  n = strftime (buf, sizeof (buf), "%e %^B %Y", &tm);
+
+  /* Switch back.  */
+  (void) uselocale (old);
+
+  if (n == 0)
+    {
+      puts ("strftime after first uselocale failed");
+      result = 1;
+    }
+  else if (strcmp (buf, " 1 M\xc4RZ 2002") != 0)
+    {
+      printf ("strftime in non-C locale: expected \"%s\", got \"%s\"\n",
+	      " 1 M\xc4RZ 2002", buf);
+      result = 1;
+    }
+  else
+    {
+      setlocale (LC_ALL, "de_DE.ISO-8859-1");
+      printf ("got \"%s\"\n", buf);
+      setlocale (LC_ALL, "C");
+    }
+
+  if (strftime (buf, sizeof (buf), "%e %^B %Y", &tm) == 0)
+    {
+      puts ("strftime after second uselocale failed");
+      result = 1;
+    }
+  else if (strcmp (buf, " 1 MARCH 2002") != 0)
+    {
+      printf ("initial strftime: expected \"%s\", got \"%s\"\n",
+	      " 1 MARCH 2002", buf);
+      result = 1;
+    }
+  else
+    printf ("got \"%s\"\n", buf);
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-getdate.c b/ap/libc/glibc/glibc-2.23/time/tst-getdate.c
new file mode 100644
index 0000000..7709acd
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-getdate.c
@@ -0,0 +1,126 @@
+/* Test for getdate.
+   Copyright (C) 2000-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+static const struct
+{
+  const char *str;
+  const char *tz;
+  int err;
+  struct tm tm;
+} tests [] =
+{
+  {"21:01:10 1999-1-31", "Universal", 0, {10, 1, 21, 31, 0, 99, 0, 0, 0}},
+  {"21:01:10    1999-1-31", "Universal", 0, {10, 1, 21, 31, 0, 99, 0, 0, 0}},
+  {"   21:01:10 1999-1-31", "Universal", 0, {10, 1, 21, 31, 0, 99, 0, 0, 0}},
+  {"21:01:10 1999-1-31   ", "Universal", 0, {10, 1, 21, 31, 0, 99, 0, 0, 0}},
+  {"    21:01:10 1999-1-31   ", "Universal", 0, {10, 1, 21, 31, 0, 99, 0, 0, 0}},
+  {"21:01:10 1999-2-28", "Universal", 0, {10, 1, 21, 28, 1, 99, 0, 0, 0}},
+  {"16:30:46 2000-2-29", "Universal", 0, {46, 30,16, 29, 1, 100, 0, 0, 0}},
+  {"01-08-2000 05:06:07", "Europe/Berlin", 0, {7, 6, 5, 1, 7, 100, 0, 0, 0}}
+};
+
+static void
+report_date_error (int err)
+{
+  switch(err)
+    {
+    case 1:
+      printf ("The environment variable DATEMSK is not defined or null.\n");
+      break;
+    case 2:
+      printf ("The template file denoted by the DATEMSK environment variable cannot be opened.\n");
+      break;
+    case 3:
+      printf ("Information about the template file cannot retrieved.\n");
+      break;
+    case 4:
+      printf ("The template file is not a regular file.\n");
+      break;
+    case 5:
+      printf ("An I/O error occurred while reading the template file.\n");
+      break;
+    case 6:
+      printf ("Not enough memory available to execute the function.\n");
+      break;
+    case 7:
+      printf ("The template file contains no matching template.\n");
+      break;
+    case 8:
+      printf ("The input date is invalid, but would match a template otherwise.\n");
+      break;
+    default:
+      printf("Unknown error code.\n");
+      break;
+    }
+}
+
+
+static int
+do_test (void)
+{
+  int errors = 0;
+  size_t i;
+  struct tm *tm;
+
+
+  for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
+    {
+      setenv ("TZ", tests[i].tz, 1);
+
+      tm = getdate (tests[i].str);
+
+      if (getdate_err != tests[i].err)
+	{
+	  printf ("Failure for getdate (\"%s\"):\n", tests[i].str);
+	  printf ("getdate_err should be %d but returned: %d which means:\n",
+		  tests[i].err, getdate_err);
+	  report_date_error (getdate_err);
+	  ++errors;
+	}
+      else if (tests[i].tm.tm_mon != tm->tm_mon
+	       || tests[i].tm.tm_year != tm->tm_year
+	       || tests[i].tm.tm_mday != tm->tm_mday
+	       || tests[i].tm.tm_hour != tm->tm_hour
+	       || tests[i].tm.tm_min != tm->tm_min
+	       || tests[i].tm.tm_sec != tm->tm_sec)
+	{
+	  printf ("Failure for getdate (\"%s\"):\n", tests[i].str);
+	  printf ("struct tm is:  %d-%d-%d %d:%d:%d\n",
+		  tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+		  tm->tm_hour, tm->tm_min, tm->tm_sec);
+	  printf ("but should be: %d-%d-%d %d:%d:%d\n",
+		  tests[i].tm.tm_year + 1900, tests[i].tm.tm_mon + 1,
+		  tests[i].tm.tm_mday,
+		  tests[i].tm.tm_hour, tests[i].tm.tm_min, tests[i].tm.tm_sec);
+	  ++errors;
+	}
+    }
+
+  if (!errors)
+    printf ("No errors found.\n");
+  return errors != 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-mktime.c b/ap/libc/glibc/glibc-2.23/time/tst-mktime.c
new file mode 100644
index 0000000..c147360
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-mktime.c
@@ -0,0 +1,73 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+static int
+do_test (void)
+{
+  struct tm time_str, *tm;
+  time_t t;
+  char daybuf[20];
+  int result;
+
+  time_str.tm_year = 2001 - 1900;
+  time_str.tm_mon = 7 - 1;
+  time_str.tm_mday = 4;
+  time_str.tm_hour = 0;
+  time_str.tm_min = 0;
+  time_str.tm_sec = 1;
+  time_str.tm_isdst = -1;
+
+  if (mktime (&time_str) == -1)
+    {
+      (void) puts ("-unknown-");
+      result = 1;
+    }
+  else
+    {
+      (void) strftime (daybuf, sizeof (daybuf), "%A", &time_str);
+      (void) puts (daybuf);
+      result = strcmp (daybuf, "Wednesday") != 0;
+    }
+
+  setenv ("TZ", "EST+5", 1);
+#define EVENING69 1 * 60 * 60 + 2 * 60 + 29
+  t = EVENING69;
+  tm = localtime (&t);
+  if (tm == NULL)
+    {
+      (void) puts ("localtime returned NULL");
+      result = 1;
+    }
+  else
+    {
+      time_str = *tm;
+      t = mktime (&time_str);
+      if (t != EVENING69)
+        {
+          printf ("mktime returned %ld, expected %d\n",
+		  (long) t, EVENING69);
+	  result = 1;
+        }
+      else
+        (void) puts ("Dec 31 1969 EST test passed");
+
+      setenv ("TZ", "CET-1", 1);
+      t = mktime (&time_str);
+#define EVENING69_CET (EVENING69 - (5 - -1) * 60 * 60)
+      if (t != EVENING69_CET)
+        {
+	  printf ("mktime returned %ld, expected %ld\n",
+		  (long) t, (long) EVENING69_CET);
+	  result = 1;
+        }
+      else
+        (void) puts ("Dec 31 1969 CET test passed");
+    }
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-mktime2.c b/ap/libc/glibc/glibc-2.23/time/tst-mktime2.c
new file mode 100644
index 0000000..c41db3e
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-mktime2.c
@@ -0,0 +1,158 @@
+/* Test program from Paul Eggert and Tony Leneis.  */
+
+#include <limits.h>
+#include <time.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/* True if the arithmetic type T is signed.  */
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+
+/* The maximum and minimum values for the integer type T.  These
+   macros have undefined behavior if T is signed and has padding bits.
+   If this is a problem for you, please let us know how to fix it for
+   your host.  */
+#define TYPE_MINIMUM(t) \
+  ((t) (! TYPE_SIGNED (t) \
+	? (t) 0 \
+	: ~ TYPE_MAXIMUM (t)))
+#define TYPE_MAXIMUM(t) \
+  ((t) (! TYPE_SIGNED (t) \
+	? (t) -1 \
+	: ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
+
+#ifndef TIME_T_MIN
+# define TIME_T_MIN TYPE_MINIMUM (time_t)
+#endif
+#ifndef TIME_T_MAX
+# define TIME_T_MAX TYPE_MAXIMUM (time_t)
+#endif
+
+/* Values we'll use to set the TZ environment variable.  */
+static const char *tz_strings[] =
+  {
+    (const char *) 0, "GMT0", "JST-9",
+    "EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00"
+  };
+#define N_STRINGS ((int) (sizeof (tz_strings) / sizeof (tz_strings[0])))
+
+/* Fail if mktime fails to convert a date in the spring-forward gap.
+   Based on a problem report from Andreas Jaeger.  */
+static void
+spring_forward_gap (void)
+{
+  /* glibc (up to about 1998-10-07) failed this test. */
+  struct tm tm;
+
+  /* Use the portable POSIX.1 specification "TZ=PST8PDT,M4.1.0,M10.5.0"
+     instead of "TZ=America/Vancouver" in order to detect the bug even
+     on systems that don't support the Olson extension, or don't have the
+     full zoneinfo tables installed.  */
+  setenv ("TZ", "PST8PDT,M4.1.0,M10.5.0", 1);
+
+  tm.tm_year = 98;
+  tm.tm_mon = 3;
+  tm.tm_mday = 5;
+  tm.tm_hour = 2;
+  tm.tm_min = 0;
+  tm.tm_sec = 0;
+  tm.tm_isdst = -1;
+  if (mktime (&tm) == (time_t)-1)
+    exit (1);
+}
+
+static void
+mktime_test1 (time_t now)
+{
+  struct tm *lt = localtime (&now);
+  if (lt && mktime (lt) != now)
+    exit (2);
+}
+
+static void
+mktime_test (time_t now)
+{
+  mktime_test1 (now);
+  mktime_test1 ((time_t) (TIME_T_MAX - now));
+  mktime_test1 ((time_t) (TIME_T_MIN + now));
+}
+
+static void
+irix_6_4_bug (void)
+{
+  /* Based on code from Ariel Faigon.  */
+  struct tm tm;
+  tm.tm_year = 96;
+  tm.tm_mon = 3;
+  tm.tm_mday = 0;
+  tm.tm_hour = 0;
+  tm.tm_min = 0;
+  tm.tm_sec = 0;
+  tm.tm_isdst = -1;
+  mktime (&tm);
+  if (tm.tm_mon != 2 || tm.tm_mday != 31)
+    exit (3);
+}
+
+static void
+bigtime_test (int j)
+{
+  struct tm tm;
+  time_t now;
+  tm.tm_year = tm.tm_mon = tm.tm_mday = tm.tm_hour = tm.tm_min = tm.tm_sec = j;
+  tm.tm_isdst = -1;
+  now = mktime (&tm);
+  if (now != (time_t) -1)
+    {
+      struct tm *lt = localtime (&now);
+      if (! (lt
+	     && lt->tm_year == tm.tm_year
+	     && lt->tm_mon == tm.tm_mon
+	     && lt->tm_mday == tm.tm_mday
+	     && lt->tm_hour == tm.tm_hour
+	     && lt->tm_min == tm.tm_min
+	     && lt->tm_sec == tm.tm_sec
+	     && lt->tm_yday == tm.tm_yday
+	     && lt->tm_wday == tm.tm_wday
+	     && ((lt->tm_isdst < 0 ? -1 : 0 < lt->tm_isdst)
+		  == (tm.tm_isdst < 0 ? -1 : 0 < tm.tm_isdst))))
+	exit (4);
+    }
+}
+
+static int
+do_test (void)
+{
+  time_t t, delta;
+  int i;
+  unsigned int j;
+
+  setenv ("TZ", "America/Sao_Paulo", 1);
+  /* This test makes some buggy mktime implementations loop.
+     Give up after 60 seconds; a mktime slower than that
+     isn't worth using anyway.  */
+  alarm (60);
+
+  delta = TIME_T_MAX / 997; /* a suitable prime number */
+  for (i = 0; i < N_STRINGS; i++)
+    {
+      if (tz_strings[i])
+	setenv ("TZ", tz_strings[i], 1);
+
+      for (t = 0; t <= TIME_T_MAX - delta; t += delta)
+	mktime_test (t);
+      mktime_test ((time_t) 1);
+      mktime_test ((time_t) (60 * 60));
+      mktime_test ((time_t) (60 * 60 * 24));
+
+      for (j = 1; j <= INT_MAX; j *= 2)
+	bigtime_test (j);
+      bigtime_test (j - 1);
+    }
+  irix_6_4_bug ();
+  spring_forward_gap ();
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-mktime3.c b/ap/libc/glibc/glibc-2.23/time/tst-mktime3.c
new file mode 100644
index 0000000..c738e53
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-mktime3.c
@@ -0,0 +1,53 @@
+/* Test program for mktime bugs with out-of-range tm_sec values.  */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+
+struct tm tests[] =
+{
+  { .tm_sec = -1, .tm_mday = 1, .tm_year = 104 },
+  { .tm_sec = 65, .tm_min = 59, .tm_hour = 23, .tm_mday = 31,
+    .tm_mon = 11, .tm_year = 101 }
+};
+struct tm expected[] =
+{
+  { .tm_sec = 59, .tm_min = 59, .tm_hour = 23, .tm_mday = 31,
+    .tm_mon = 11, .tm_year = 103, .tm_wday = 3, .tm_yday = 364 },
+  { .tm_sec = 5, .tm_mday = 1, .tm_year = 102, .tm_wday = 2 }
+};
+
+static int
+do_test (void)
+{
+  setenv ("TZ", "UTC", 1);
+  int i;
+  for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
+    {
+      if (mktime (&tests[i]) < 0)
+	{
+	  printf ("mktime %d failed\n", i);
+	  return 1;
+	}
+#define CHECK(name) \
+      if (tests[i].name != expected[i].name)			\
+	{							\
+	  printf ("test %d " #name " got %d expected %d\n",	\
+		  i, tests[i].name, expected[i].name);		\
+	  return 1;						\
+	}
+      CHECK (tm_sec)
+      CHECK (tm_min)
+      CHECK (tm_hour)
+      CHECK (tm_mday)
+      CHECK (tm_mon)
+      CHECK (tm_year)
+      CHECK (tm_wday)
+      CHECK (tm_yday)
+      CHECK (tm_isdst)
+    }
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-posixtz.c b/ap/libc/glibc/glibc-2.23/time/tst-posixtz.c
new file mode 100644
index 0000000..16aa19d
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-posixtz.c
@@ -0,0 +1,122 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+struct
+{
+  time_t when;
+  const char *tz;
+  const char *result;
+} tests[] =
+{
+  { 909312849L, "AEST-10AEDST-11,M10.5.0,M3.5.0",
+    "1998/10/25 21:54:09 dst=1 zone=AEDST" },
+  { 924864849L, "AEST-10AEDST-11,M10.5.0,M3.5.0",
+    "1999/04/23 20:54:09 dst=0 zone=AEST" },
+  { 919973892L, "AEST-10AEDST-11,M10.5.0,M3.5.0",
+    "1999/02/26 07:18:12 dst=1 zone=AEDST" },
+  { 909312849L, "EST+5EDT,M4.1.0/2,M10.5.0/2",
+    "1998/10/25 05:54:09 dst=0 zone=EST" },
+  { 909312849L, "EST5EDT,M4.1.0/2,M10.5.0/2",
+    "1998/10/25 05:54:09 dst=0 zone=EST" },
+  { 909312849L, "<EST5>5EDT,M4.1.0/2,M10.5.0/2",
+    "1998/10/25 05:54:09 dst=0 zone=EST5" },
+  { 924864849L, "EST+5EDT,M4.1.0/2,M10.5.0/2",
+    "1999/04/23 06:54:09 dst=1 zone=EDT" },
+  { 919973892L, "EST+5EDT,M4.1.0/2,M10.5.0/2",
+    "1999/02/25 15:18:12 dst=0 zone=EST" },
+};
+
+static int
+do_test (void)
+{
+  int result = 0;
+  size_t cnt;
+
+  for (cnt = 0; cnt < sizeof (tests) / sizeof (tests[0]); ++cnt)
+    {
+      char buf[100];
+      struct tm *tmp;
+
+      printf ("TZ = \"%s\", time = %jd => ", tests[cnt].tz,
+	      (intmax_t) tests[cnt].when);
+      fflush (stdout);
+
+      setenv ("TZ", tests[cnt].tz, 1);
+
+      tmp = localtime (&tests[cnt].when);
+
+      snprintf (buf, sizeof (buf),
+		"%04d/%02d/%02d %02d:%02d:%02d dst=%d zone=%s",
+		tmp->tm_year + 1900, tmp->tm_mon + 1, tmp->tm_mday,
+		tmp->tm_hour, tmp->tm_min, tmp->tm_sec, tmp->tm_isdst,
+		tzname[tmp->tm_isdst ? 1 : 0]);
+
+      fputs (buf, stdout);
+
+      if (strcmp (buf, tests[cnt].result) == 0)
+	puts (", OK");
+      else
+	{
+	  result = 1;
+	  puts (", FAIL");
+	}
+    }
+
+  setenv ("TZ", "Universal", 1);
+  localtime (&tests[0].when);
+  printf ("TZ = \"Universal\" daylight %d tzname = { \"%s\", \"%s\" }",
+	  daylight, tzname[0], tzname[1]);
+  if (! daylight)
+    puts (", OK");
+  else
+    {
+      result = 1;
+      puts (", FAIL");
+    }
+
+  setenv ("TZ", "AEST-10AEDST-11,M10.5.0,M3.5.0", 1);
+  tzset ();
+  printf ("TZ = \"AEST-10AEDST-11,M10.5.0,M3.5.0\" daylight %d"
+	  " tzname = { \"%s\", \"%s\" }", daylight, tzname[0], tzname[1]);
+  if (daylight
+      && strcmp (tzname[0], "AEST") == 0 && strcmp (tzname[1], "AEDST") == 0)
+    puts (", OK");
+  else
+    {
+      result = 1;
+      puts (", FAIL");
+    }
+
+  setenv ("TZ", "<AB1>-10<AB2>-11,M10.5.0,M3.5.0", 1);
+  tzset ();
+  printf ("TZ = \"<AB1>-10<AB2>-11,M10.5.0,M3.5.0\" daylight %d"
+	  " tzname = { \"%s\", \"%s\" }", daylight, tzname[0], tzname[1]);
+  if (daylight
+      && strcmp (tzname[0], "AB1") == 0 && strcmp (tzname[1], "AB2") == 0)
+    puts (", OK");
+  else
+    {
+      result = 1;
+      puts (", FAIL");
+    }
+
+  setenv ("TZ", "<BB1>-10", 1);
+  tzset ();
+  printf ("TZ = \"<BB1>-10\" daylight %d"
+	  " tzname = { \"%s\", \"%s\" }", daylight, tzname[0], tzname[1]);
+  if (daylight == 0
+      && strcmp (tzname[0], "BB1") == 0 && strcmp (tzname[1], "BB1") == 0)
+    puts (", OK");
+  else
+    {
+      result = 1;
+      puts (", FAIL");
+    }
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-strftime.c b/ap/libc/glibc/glibc-2.23/time/tst-strftime.c
new file mode 100644
index 0000000..af3ff72
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-strftime.c
@@ -0,0 +1,161 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+
+static int
+do_bz18985 (void)
+{
+  char buf[1000];
+  struct tm ttm;
+  int rc, ret = 0;
+
+  memset (&ttm, 1, sizeof (ttm));
+  ttm.tm_zone = NULL;  /* Dereferenced directly if non-NULL.  */
+  rc = strftime (buf, sizeof (buf), "%a %A %b %B %c %z %Z", &ttm);
+
+  if (rc == 66)
+    {
+      const char expected[]
+	= "? ? ? ? ? ? 16843009 16843009:16843009:16843009 16844909 +467836 ?";
+      if (0 != strcmp (buf, expected))
+	{
+	  printf ("expected:\n  %s\ngot:\n  %s\n", expected, buf);
+	  ret += 1;
+	}
+    }
+  else
+    {
+      printf ("expected 66, got %d\n", rc);
+      ret += 1;
+    }
+
+  /* Check negative values as well.  */
+  memset (&ttm, 0xFF, sizeof (ttm));
+  ttm.tm_zone = NULL;  /* Dereferenced directly if non-NULL.  */
+  rc = strftime (buf, sizeof (buf), "%a %A %b %B %c %z %Z", &ttm);
+
+  if (rc == 30)
+    {
+      const char expected[] = "? ? ? ? ? ? -1 -1:-1:-1 1899  ";
+      if (0 != strcmp (buf, expected))
+	{
+	  printf ("expected:\n  %s\ngot:\n  %s\n", expected, buf);
+	  ret += 1;
+	}
+    }
+  else
+    {
+      printf ("expected 30, got %d\n", rc);
+      ret += 1;
+    }
+
+  return ret;
+}
+
+static struct
+{
+  const char *fmt;
+  size_t min;
+  size_t max;
+} tests[] =
+  {
+    { "%2000Y", 2000, 4000 },
+    { "%02000Y", 2000, 4000 },
+    { "%_2000Y", 2000, 4000 },
+    { "%-2000Y", 2000, 4000 },
+  };
+#define ntests (sizeof (tests) / sizeof (tests[0]))
+
+
+static int
+do_test (void)
+{
+  size_t cnt;
+  int result = 0;
+
+  time_t tnow = time (NULL);
+  struct tm *now = localtime (&tnow);
+
+  for (cnt = 0; cnt < ntests; ++cnt)
+    {
+      size_t size = 0;
+      int res;
+      char *buf = NULL;
+
+      do
+	{
+	  size += 500;
+	  buf = (char *) realloc (buf, size);
+	  if (buf == NULL)
+	    {
+	      puts ("out of memory");
+	      exit (1);
+	    }
+
+	  res = strftime (buf, size, tests[cnt].fmt, now);
+	  if (res != 0)
+	    break;
+	}
+      while (size < tests[cnt].max);
+
+      if (res == 0)
+	{
+	  printf ("%Zu: %s: res == 0 despite size == %Zu\n",
+		  cnt, tests[cnt].fmt, size);
+	  result = 1;
+	}
+      else if (size < tests[cnt].min)
+	{
+	  printf ("%Zu: %s: size == %Zu was enough\n",
+		  cnt, tests[cnt].fmt, size);
+	  result = 1;
+	}
+      else
+	printf ("%Zu: %s: size == %Zu: OK\n", cnt, tests[cnt].fmt, size);
+
+      free (buf);
+    }
+
+  struct tm ttm =
+    {
+      /* Initialize the fields which are needed in the tests.  */
+      .tm_mday = 1,
+      .tm_hour = 2
+    };
+  const struct
+  {
+    const char *fmt;
+    const char *exp;
+    size_t n;
+  } ftests[] =
+    {
+      { "%-e", "1", 1 },
+      { "%-k", "2", 1 },
+      { "%-l", "2", 1 },
+    };
+#define nftests (sizeof (ftests) / sizeof (ftests[0]))
+  for (cnt = 0; cnt < nftests; ++cnt)
+    {
+      char buf[100];
+      size_t r = strftime (buf, sizeof (buf), ftests[cnt].fmt, &ttm);
+      if (r != ftests[cnt].n)
+	{
+	  printf ("strftime(\"%s\") returned %zu not %zu\n",
+		  ftests[cnt].fmt, r, ftests[cnt].n);
+	  result = 1;
+	}
+      if (strcmp (buf, ftests[cnt].exp) != 0)
+	{
+	  printf ("strftime(\"%s\") produced \"%s\" not \"%s\"\n",
+		  ftests[cnt].fmt, buf, ftests[cnt].exp);
+	  result = 1;
+	}
+    }
+
+  return result + do_bz18985 ();
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-strptime-whitespace.c b/ap/libc/glibc/glibc-2.23/time/tst-strptime-whitespace.c
new file mode 100644
index 0000000..f1442de
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-strptime-whitespace.c
@@ -0,0 +1,43 @@
+/* Verify that strptime accepts arbitrary whitespace between tokens.
+
+   Copyright (C) 2013-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define _XOPEN_SOURCE
+#include <time.h>
+#include <stdio.h>
+#include <string.h>
+
+int
+do_test (void)
+{
+  struct tm t;
+  const char *in = "Tuesday \t 22 \t July\t1942";
+
+  char *r = strptime (in, "%A%d %b%Y", &t);
+
+  if (r == NULL || r != in + strlen (in))
+    {
+      printf ("strptime failed\n");
+      return 1;
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-strptime.c b/ap/libc/glibc/glibc-2.23/time/tst-strptime.c
new file mode 100644
index 0000000..3b94c2e
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-strptime.c
@@ -0,0 +1,199 @@
+/* Test for strptime.
+   Copyright (C) 1998-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+
+static const struct
+{
+  const char *locale;
+  const char *input;
+  const char *format;
+  int wday;
+  int yday;
+  int mon;
+  int mday;
+} day_tests[] =
+{
+  { "C", "2000-01-01", "%Y-%m-%d", 6, 0, 0, 1 },
+  { "C", "03/03/00", "%D", 5, 62, 2, 3 },
+  { "C", "9/9/99", "%x", 4, 251, 8, 9 },
+  { "C", "19990502123412", "%Y%m%d%H%M%S", 0, 121, 4, 2 },
+  { "C", "2001 20 Mon", "%Y %U %a", 1, 140, 4, 21 },
+  { "C", "2001 21 Mon", "%Y %W %a", 1, 140, 4, 21 },
+  { "C", "2001 21 Mon", "%2000Y %W %a", 1, 140, 4, 21 },
+  { "C", "2001 21 Mon", "%^Y %W %a", 1, 140, 4, 21 },
+  { "C", "2001 EST 21 Mon", "%Y %Z %W %a", 1, 140, 4, 21 },
+  { "C", "2012 00 Sun", "%Y %W %a", 0, 0, 0, 1 },
+  { "ja_JP.EUC-JP", "2000-01-01 08:12:21 AM", "%Y-%m-%d %I:%M:%S %p",
+    6, 0, 0, 1 },
+  { "en_US.ISO-8859-1", "2000-01-01 08:12:21 PM", "%Y-%m-%d %I:%M:%S %p",
+    6, 0, 0, 1 },
+  { "ja_JP.EUC-JP", "2001 20 \xb7\xee", "%Y %U %a", 1, 140, 4, 21 },
+  { "ja_JP.EUC-JP", "2001 21 \xb7\xee", "%Y %W %a", 1, 140, 4, 21 },
+};
+
+
+static const struct
+{
+  const char *input;
+  const char *format;
+  const char *output;
+  int wday;
+  int yday;
+} tm_tests [] =
+{
+  {"17410105012000", "%H%M%S%d%m%Y", "2000-01-05 17:41:01", 3, 4}
+};
+
+
+
+static int
+test_tm (void)
+{
+  struct tm tm;
+  size_t i;
+  int result = 0;
+  char buf[100];
+
+  for (i = 0; i < sizeof (tm_tests) / sizeof (tm_tests[0]); ++i)
+    {
+      memset (&tm, '\0', sizeof (tm));
+
+      char *ret = strptime (tm_tests[i].input, tm_tests[i].format, &tm);
+      if (ret == NULL)
+	{
+	  printf ("strptime returned NULL for `%s'\n", tm_tests[i].input);
+	  result = 1;
+	  continue;
+	}
+      else if (*ret != '\0')
+	{
+	  printf ("not all of `%s' read\n", tm_tests[i].input);
+	  result = 1;
+	}
+      strftime (buf, sizeof (buf), "%F %T", &tm);
+      printf ("strptime (\"%s\", \"%s\", ...)\n"
+	      "\tshould be: %s, wday = %d, yday = %3d\n"
+	      "\t       is: %s, wday = %d, yday = %3d\n",
+	      tm_tests[i].input, tm_tests[i].format,
+	      tm_tests[i].output,
+	      tm_tests[i].wday, tm_tests[i].yday,
+	      buf, tm.tm_wday, tm.tm_yday);
+
+      if (strcmp (buf, tm_tests[i].output) != 0)
+	{
+	  printf ("Time and date are not correct.\n");
+	  result = 1;
+	}
+      if (tm.tm_wday != tm_tests[i].wday)
+	{
+	  printf ("weekday for `%s' incorrect: %d instead of %d\n",
+		  tm_tests[i].input, tm.tm_wday, tm_tests[i].wday);
+	  result = 1;
+	}
+      if (tm.tm_yday != tm_tests[i].yday)
+	{
+	  printf ("yearday for `%s' incorrect: %d instead of %d\n",
+		  tm_tests[i].input, tm.tm_yday, tm_tests[i].yday);
+	  result = 1;
+	}
+    }
+
+  return result;
+}
+
+
+static int
+do_test (void)
+{
+  struct tm tm;
+  size_t i;
+  int result = 0;
+
+  for (i = 0; i < sizeof (day_tests) / sizeof (day_tests[0]); ++i)
+    {
+      memset (&tm, '\0', sizeof (tm));
+
+      if (setlocale (LC_ALL, day_tests[i].locale) == NULL)
+	{
+	  printf ("cannot set locale %s: %m\n", day_tests[i].locale);
+	  exit (EXIT_FAILURE);
+	}
+
+      char *ret = strptime (day_tests[i].input, day_tests[i].format, &tm);
+      if (ret == NULL)
+	{
+	  printf ("strptime returned NULL for `%s'\n", day_tests[i].input);
+	  result = 1;
+	  continue;
+	}
+      else if (*ret != '\0')
+	{
+	  printf ("not all of `%s' read\n", day_tests[i].input);
+	  result = 1;
+	}
+
+      printf ("strptime (\"%s\", \"%s\", ...)\n"
+	      "\tshould be: wday = %d, yday = %3d, mon = %2d, mday = %2d\n"
+	      "\t       is: wday = %d, yday = %3d, mon = %2d, mday = %2d\n",
+	      day_tests[i].input, day_tests[i].format,
+	      day_tests[i].wday, day_tests[i].yday,
+	      day_tests[i].mon, day_tests[i].mday,
+	      tm.tm_wday, tm.tm_yday, tm.tm_mon, tm.tm_mday);
+
+      if (tm.tm_wday != day_tests[i].wday)
+	{
+	  printf ("weekday for `%s' incorrect: %d instead of %d\n",
+		  day_tests[i].input, tm.tm_wday, day_tests[i].wday);
+	  result = 1;
+	}
+      if (tm.tm_yday != day_tests[i].yday)
+	{
+	  printf ("yearday for `%s' incorrect: %d instead of %d\n",
+		  day_tests[i].input, tm.tm_yday, day_tests[i].yday);
+	  result = 1;
+	}
+      if (tm.tm_mon != day_tests[i].mon)
+	{
+	  printf ("month for `%s' incorrect: %d instead of %d\n",
+		  day_tests[i].input, tm.tm_mon, day_tests[i].mon);
+	  result = 1;
+	}
+      if (tm.tm_mday != day_tests[i].mday)
+	{
+	  printf ("monthday for `%s' incorrect: %d instead of %d\n",
+		  day_tests[i].input, tm.tm_mday, day_tests[i].mday);
+	  result = 1;
+	}
+    }
+
+  setlocale (LC_ALL, "C");
+
+  result |= test_tm ();
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-strptime2.c b/ap/libc/glibc/glibc-2.23/time/tst-strptime2.c
new file mode 100644
index 0000000..7fe7350
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-strptime2.c
@@ -0,0 +1,224 @@
+/* tst-strptime2 - Test strptime %z timezone offset specifier.  */
+
+#include <limits.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <time.h>
+
+/* Dummy string is used to match strptime's %s specifier.  */
+
+static const char dummy_string[] = "1113472456";
+
+/* buffer_size contains the maximum test string length, including
+   trailing NUL.  */
+
+enum
+{
+  buffer_size = 20,
+};
+
+/* Verbose execution, set with --verbose command line option.  */
+
+static bool verbose;
+
+
+/* mkbuf - Write a test string for strptime with the specified time
+   value and number of digits into the supplied buffer, and return
+   the expected strptime test result.
+
+   The test string, buf, is written with the following content:
+     a dummy string matching strptime "%s" format specifier,
+     whitespace matching strptime " " format specifier, and
+     timezone string matching strptime "%z" format specifier.
+
+   Note that a valid timezone string is either "Z" or contains the
+   following fields:
+     Sign field consisting of a '+' or '-' sign,
+     Hours field in two decimal digits, and
+     optional Minutes field in two decimal digits. Optionally,
+     a ':' is used to seperate hours and minutes.
+
+   This function may write test strings with minutes values outside
+   the valid range 00-59.  These are invalid strings and useful for
+   testing strptime's rejection of invalid strings.
+
+   The ndigits parameter is used to limit the number of timezone
+   string digits to be written and may range from 0 to 4.  Note that
+   only 2 and 4 digit strings are valid input to strptime; strings
+   with 0, 1 or 3 digits are invalid and useful for testing strptime's
+   rejection of invalid strings.
+
+   This function returns the behavior expected of strptime resulting
+   from parsing the the test string.  For valid strings, the function
+   returns the expected tm_gmtoff value.  For invalid strings,
+   LONG_MAX is returned.  LONG_MAX indicates the expectation that
+   strptime will return NULL; for example, if the number of digits
+   are not correct, or minutes part of the time is outside the valid
+   range of 00 to 59.  */
+
+static long int
+mkbuf (char *buf, bool neg, bool colon, unsigned int hhmm, size_t ndigits)
+{
+  const int mm_max = 59;
+  char sign = neg ? '-' : '+';
+  int i;
+  unsigned int hh = hhmm / 100;
+  unsigned int mm = hhmm % 100;
+  long int expect = LONG_MAX;
+
+  i = sprintf (buf, "%s %c", dummy_string, sign);
+  if (colon)
+    snprintf (buf + i, ndigits + 2, "%02u:%02u", hh, mm);
+  else
+    snprintf (buf + i, ndigits + 1, "%04u", hhmm);
+
+  if (mm <= mm_max && (ndigits == 2 || ndigits == 4))
+    {
+      long int tm_gmtoff = hh * 3600 + mm * 60;
+
+      expect = neg ? -tm_gmtoff : tm_gmtoff;
+    }
+
+  return expect;
+}
+
+
+/* Write a description of expected or actual test result to stdout.  */
+
+static void
+describe (bool string_valid, long int tm_gmtoff)
+{
+  if (string_valid)
+    printf ("valid, tm.tm_gmtoff %ld", tm_gmtoff);
+  else
+    printf ("invalid, return value NULL");
+}
+
+
+/* Using buffer buf, run strptime.  Compare results against expect,
+  the expected result.  Report failures and verbose results to stdout.
+  Update the result counts.  Return 1 if test failed, 0 if passed.  */
+
+static int
+compare (const char *buf, long int expect, unsigned int *nresult)
+{
+  struct tm tm;
+  char *p;
+  bool test_string_valid;
+  long int test_result;
+  bool fail;
+  int result;
+
+  p = strptime (buf, "%s %z", &tm);
+  test_string_valid = p != NULL;
+  test_result = test_string_valid ? tm.tm_gmtoff : LONG_MAX;
+  fail = test_result != expect;
+
+  if (fail || verbose)
+    {
+      bool expect_string_valid = expect != LONG_MAX;
+
+      printf ("%s: input \"%s\", expected: ", fail ? "FAIL" : "PASS", buf);
+      describe (expect_string_valid, expect);
+
+      if (fail)
+	{
+	  printf (", got: ");
+	  describe (test_string_valid, test_result);
+	}
+
+      printf ("\n");
+    }
+
+  result = fail ? 1 : 0;
+  nresult[result]++;
+
+  return result;
+}
+
+
+static int
+do_test (void)
+{
+  char buf[buffer_size];
+  long int expect;
+  int result = 0;
+  /* Number of tests run with passing (index==0) and failing (index==1)
+     results.  */
+  unsigned int nresult[2];
+  unsigned int ndigits;
+  unsigned int step;
+  unsigned int hhmm;
+
+  nresult[0] = 0;
+  nresult[1] = 0;
+
+  /* Create and test input string with no sign and four digits input
+     (invalid format).  */
+
+  sprintf (buf, "%s  1030", dummy_string);
+  expect = LONG_MAX;
+  result |= compare (buf, expect, nresult);
+
+  /* Create and test input string with "Z" input (valid format).
+     Expect tm_gmtoff of 0.  */
+
+  sprintf (buf, "%s Z", dummy_string);
+  expect = 0;
+  result |= compare (buf, expect, nresult);
+
+  /* Create and test input strings with sign and digits:
+     0 digits (invalid format),
+     1 digit (invalid format),
+     2 digits (valid format),
+     3 digits (invalid format),
+     4 digits (valid format if and only if minutes is in range 00-59,
+	       otherwise invalid).
+     If format is valid, the returned tm_gmtoff is checked.  */
+
+  for (ndigits = 0, step = 10000; ndigits <= 4; ndigits++, step /= 10)
+    for (hhmm = 0; hhmm <= 9999; hhmm += step)
+      {
+	/* Test both positive and negative signs.  */
+
+	expect = mkbuf (buf, false, false, hhmm, ndigits);
+	result |= compare (buf, expect, nresult);
+
+	expect = mkbuf (buf, true, false, hhmm, ndigits);
+	result |= compare (buf, expect, nresult);
+
+	/* Test with colon as well.  */
+
+	if (ndigits >= 3)
+	  {
+	    expect = mkbuf (buf, false, true, hhmm, ndigits);
+	    result |= compare (buf, expect, nresult);
+
+	    expect = mkbuf (buf, true, true, hhmm, ndigits);
+	    result |= compare (buf, expect, nresult);
+	  }
+      }
+
+  if (result > 0 || verbose)
+    printf ("%s: %u input strings: %u fail, %u pass\n",
+	    result > 0 ? "FAIL" : "PASS",
+	    nresult[1] + nresult[0], nresult[1], nresult[0]);
+
+  return result;
+}
+
+
+/* Add a "--verbose" command line option to test-skeleton.c.  */
+
+#define OPT_VERBOSE 10000
+
+#define CMDLINE_OPTIONS \
+  { "verbose", no_argument, NULL, OPT_VERBOSE, },
+
+#define CMDLINE_PROCESS \
+  case OPT_VERBOSE: \
+    verbose = true; \
+    break;
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-strptime3.c b/ap/libc/glibc/glibc-2.23/time/tst-strptime3.c
new file mode 100644
index 0000000..d53f51e
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-strptime3.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+
+static int
+do_test (void)
+{
+  int result = 0;
+  struct tm tm;
+
+  memset (&tm, 0xaa, sizeof (tm));
+
+  /* Test we don't crash on uninitialized struct tm.
+     Some fields might contain bogus values until everything
+     needed is initialized, but we shouldn't crash.  */
+  if (strptime ("2007", "%Y", &tm) == NULL
+      || strptime ("12", "%d", &tm) == NULL
+      || strptime ("Feb", "%b", &tm) == NULL
+      || strptime ("13", "%M", &tm) == NULL
+      || strptime ("21", "%S", &tm) == NULL
+      || strptime ("16", "%H", &tm) == NULL)
+    {
+      puts ("strptimes failed");
+      result = 1;
+    }
+
+  if (tm.tm_sec != 21 || tm.tm_min != 13 || tm.tm_hour != 16
+      || tm.tm_mday != 12 || tm.tm_mon != 1 || tm.tm_year != 107
+      || tm.tm_wday != 1 || tm.tm_yday != 42)
+    {
+      puts ("unexpected tm content");
+      result = 1;
+    }
+
+  if (strptime ("8", "%d", &tm) == NULL)
+    {
+      puts ("strptime failed");
+      result = 1;
+    }
+
+  if (tm.tm_sec != 21 || tm.tm_min != 13 || tm.tm_hour != 16
+      || tm.tm_mday != 8 || tm.tm_mon != 1 || tm.tm_year != 107
+      || tm.tm_wday != 4 || tm.tm_yday != 38)
+    {
+      puts ("unexpected tm content");
+      result = 1;
+    }
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst-tzname.c b/ap/libc/glibc/glibc-2.23/time/tst-tzname.c
new file mode 100644
index 0000000..ea7ec92
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst-tzname.c
@@ -0,0 +1,50 @@
+/* Test that tzset sets tzname correctly (BZ #19253).
+   Copyright (C) 2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+static int
+do_test (void)
+{
+  int result = 0;
+
+  setenv ("TZ", TZDEFRULES, 1);
+  tzset ();
+  const char *stdtz = strdup (tzname[0]);
+  setenv ("TZ", "STD-1DST", 1);
+  tzset ();
+  if (strcmp (tzname[0], "STD") != 0)
+    {
+      printf ("FAIL: TZ=STD-1DST, tzname[0] = %s\n", tzname[0]);
+      result = 1;
+    }
+  setenv ("TZ", TZDEFRULES, 1);
+  tzset ();
+  if (strcmp (tzname[0], stdtz) != 0)
+    {
+      printf ("FAIL: TZ=%s, tzname[0] = %s\n", TZDEFRULES, tzname[0]);
+      result = 1;
+    }
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/ap/libc/glibc/glibc-2.23/time/tst_wcsftime.c b/ap/libc/glibc/glibc-2.23/time/tst_wcsftime.c
new file mode 100644
index 0000000..3f6f0d9
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tst_wcsftime.c
@@ -0,0 +1,28 @@
+#include <time.h>
+#include <wchar.h>
+
+int
+main (int argc, char *argv[])
+{
+  wchar_t buf[200];
+  time_t t;
+  struct tm *tp;
+  int result = 0;
+  size_t n;
+
+  time (&t);
+  tp = gmtime (&t);
+
+  n = wcsftime (buf, sizeof (buf) / sizeof (buf[0]),
+		L"%H:%M:%S  %Y-%m-%d\n", tp);
+  if (n != 21)
+    result = 1;
+
+  wprintf (L"It is now %ls", buf);
+
+  wcsftime (buf, sizeof (buf) / sizeof (buf[0]), L"%A\n", tp);
+
+  wprintf (L"The weekday is %ls", buf);
+
+  return result;
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/tzfile.c b/ap/libc/glibc/glibc-2.23/time/tzfile.c
new file mode 100644
index 0000000..9049878
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tzfile.c
@@ -0,0 +1,857 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <assert.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <stdint.h>
+
+#define	NOID
+#include <timezone/tzfile.h>
+
+int __use_tzfile;
+static dev_t tzfile_dev;
+static ino64_t tzfile_ino;
+static time_t tzfile_mtime;
+
+struct ttinfo
+  {
+    long int offset;		/* Seconds east of GMT.  */
+    unsigned char isdst;	/* Used to set tm_isdst.  */
+    unsigned char idx;		/* Index into `zone_names'.  */
+    unsigned char isstd;	/* Transition times are in standard time.  */
+    unsigned char isgmt;	/* Transition times are in GMT.  */
+  };
+
+struct leap
+  {
+    time_t transition;		/* Time the transition takes effect.  */
+    long int change;		/* Seconds of correction to apply.  */
+  };
+
+static void compute_tzname_max (size_t) internal_function;
+
+static size_t num_transitions;
+libc_freeres_ptr (static time_t *transitions);
+static unsigned char *type_idxs;
+static size_t num_types;
+static struct ttinfo *types;
+static char *zone_names;
+static long int rule_stdoff;
+static long int rule_dstoff;
+static size_t num_leaps;
+static struct leap *leaps;
+static char *tzspec;
+
+#include <endian.h>
+#include <byteswap.h>
+
+/* Decode the four bytes at PTR as a signed integer in network byte order.  */
+static inline int
+__attribute ((always_inline))
+decode (const void *ptr)
+{
+  if (BYTE_ORDER == BIG_ENDIAN && sizeof (int) == 4)
+    return *(const int *) ptr;
+  if (sizeof (int) == 4)
+    return bswap_32 (*(const int *) ptr);
+
+  const unsigned char *p = ptr;
+  int result = *p & (1 << (CHAR_BIT - 1)) ? ~0 : 0;
+
+  result = (result << 8) | *p++;
+  result = (result << 8) | *p++;
+  result = (result << 8) | *p++;
+  result = (result << 8) | *p++;
+
+  return result;
+}
+
+
+static inline int64_t
+__attribute ((always_inline))
+decode64 (const void *ptr)
+{
+  if ((BYTE_ORDER == BIG_ENDIAN))
+    return *(const int64_t *) ptr;
+
+  return bswap_64 (*(const int64_t *) ptr);
+}
+
+
+void
+__tzfile_read (const char *file, size_t extra, char **extrap)
+{
+  static const char default_tzdir[] = TZDIR;
+  size_t num_isstd, num_isgmt;
+  FILE *f;
+  struct tzhead tzhead;
+  size_t chars;
+  size_t i;
+  size_t total_size;
+  size_t types_idx;
+  size_t leaps_idx;
+  int was_using_tzfile = __use_tzfile;
+  int trans_width = 4;
+  size_t tzspec_len;
+  char *new = NULL;
+
+  if (sizeof (time_t) != 4 && sizeof (time_t) != 8)
+    abort ();
+
+  __use_tzfile = 0;
+
+  if (file == NULL)
+    /* No user specification; use the site-wide default.  */
+    file = TZDEFAULT;
+  else if (*file == '\0')
+    /* User specified the empty string; use UTC with no leap seconds.  */
+    goto ret_free_transitions;
+  else
+    {
+      /* We must not allow to read an arbitrary file in a setuid
+	 program.  So we fail for any file which is not in the
+	 directory hierachy starting at TZDIR
+	 and which is not the system wide default TZDEFAULT.  */
+      if (__libc_enable_secure
+	  && ((*file == '/'
+	       && memcmp (file, TZDEFAULT, sizeof TZDEFAULT)
+	       && memcmp (file, default_tzdir, sizeof (default_tzdir) - 1))
+	      || strstr (file, "../") != NULL))
+	/* This test is certainly a bit too restrictive but it should
+	   catch all critical cases.  */
+	goto ret_free_transitions;
+    }
+
+  if (*file != '/')
+    {
+      const char *tzdir;
+
+      tzdir = getenv ("TZDIR");
+      if (tzdir == NULL || *tzdir == '\0')
+	tzdir = default_tzdir;
+      if (__asprintf (&new, "%s/%s", tzdir, file) == -1)
+	goto ret_free_transitions;
+      file = new;
+    }
+
+  /* If we were already using tzfile, check whether the file changed.  */
+  struct stat64 st;
+  if (was_using_tzfile
+      && stat64 (file, &st) == 0
+      && tzfile_ino == st.st_ino && tzfile_dev == st.st_dev
+      && tzfile_mtime == st.st_mtime)
+    goto done;  /* Nothing to do.  */
+
+  /* Note the file is opened with cancellation in the I/O functions
+     disabled and if available FD_CLOEXEC set.  */
+  f = fopen (file, "rce");
+  if (f == NULL)
+    goto ret_free_transitions;
+
+  /* Get information about the file we are actually using.  */
+  if (fstat64 (__fileno (f), &st) != 0)
+    {
+      fclose (f);
+      goto ret_free_transitions;
+    }
+
+  free ((void *) transitions);
+  transitions = NULL;
+
+  /* Remember the inode and device number and modification time.  */
+  tzfile_dev = st.st_dev;
+  tzfile_ino = st.st_ino;
+  tzfile_mtime = st.st_mtime;
+
+  /* No threads reading this stream.  */
+  __fsetlocking (f, FSETLOCKING_BYCALLER);
+
+ read_again:
+  if (__builtin_expect (__fread_unlocked ((void *) &tzhead, sizeof (tzhead),
+					  1, f) != 1, 0)
+      || memcmp (tzhead.tzh_magic, TZ_MAGIC, sizeof (tzhead.tzh_magic)) != 0)
+    goto lose;
+
+  num_transitions = (size_t) decode (tzhead.tzh_timecnt);
+  num_types = (size_t) decode (tzhead.tzh_typecnt);
+  chars = (size_t) decode (tzhead.tzh_charcnt);
+  num_leaps = (size_t) decode (tzhead.tzh_leapcnt);
+  num_isstd = (size_t) decode (tzhead.tzh_ttisstdcnt);
+  num_isgmt = (size_t) decode (tzhead.tzh_ttisgmtcnt);
+
+  if (__glibc_unlikely (num_isstd > num_types || num_isgmt > num_types))
+    goto lose;
+
+  /* For platforms with 64-bit time_t we use the new format if available.  */
+  if (sizeof (time_t) == 8 && trans_width == 4
+      && tzhead.tzh_version[0] != '\0')
+    {
+      /* We use the 8-byte format.  */
+      trans_width = 8;
+
+      /* Position the stream before the second header.  */
+      size_t to_skip = (num_transitions * (4 + 1)
+			+ num_types * 6
+			+ chars
+			+ num_leaps * 8
+			+ num_isstd
+			+ num_isgmt);
+      if (fseek (f, to_skip, SEEK_CUR) != 0)
+	goto lose;
+
+      goto read_again;
+    }
+
+  if (__builtin_expect (num_transitions
+			> ((SIZE_MAX - (__alignof__ (struct ttinfo) - 1))
+			   / (sizeof (time_t) + 1)), 0))
+    goto lose;
+  total_size = num_transitions * (sizeof (time_t) + 1);
+  total_size = ((total_size + __alignof__ (struct ttinfo) - 1)
+		& ~(__alignof__ (struct ttinfo) - 1));
+  types_idx = total_size;
+  if (__builtin_expect (num_types
+			> (SIZE_MAX - total_size) / sizeof (struct ttinfo), 0))
+    goto lose;
+  total_size += num_types * sizeof (struct ttinfo);
+  if (__glibc_unlikely (chars > SIZE_MAX - total_size))
+    goto lose;
+  total_size += chars;
+  if (__builtin_expect (__alignof__ (struct leap) - 1
+			> SIZE_MAX - total_size, 0))
+    goto lose;
+  total_size = ((total_size + __alignof__ (struct leap) - 1)
+		& ~(__alignof__ (struct leap) - 1));
+  leaps_idx = total_size;
+  if (__builtin_expect (num_leaps
+			> (SIZE_MAX - total_size) / sizeof (struct leap), 0))
+    goto lose;
+  total_size += num_leaps * sizeof (struct leap);
+  tzspec_len = 0;
+  if (sizeof (time_t) == 8 && trans_width == 8)
+    {
+      off_t rem = st.st_size - __ftello (f);
+      if (__builtin_expect (rem < 0
+			    || (size_t) rem < (num_transitions * (8 + 1)
+					       + num_types * 6
+					       + chars), 0))
+	goto lose;
+      tzspec_len = (size_t) rem - (num_transitions * (8 + 1)
+				   + num_types * 6
+				   + chars);
+      if (__builtin_expect (num_leaps > SIZE_MAX / 12
+			    || tzspec_len < num_leaps * 12, 0))
+	goto lose;
+      tzspec_len -= num_leaps * 12;
+      if (__glibc_unlikely (tzspec_len < num_isstd))
+	goto lose;
+      tzspec_len -= num_isstd;
+      if (__glibc_unlikely (tzspec_len == 0 || tzspec_len - 1 < num_isgmt))
+	goto lose;
+      tzspec_len -= num_isgmt + 1;
+      if (__glibc_unlikely (tzspec_len == 0
+			    || SIZE_MAX - total_size < tzspec_len))
+	goto lose;
+    }
+  if (__glibc_unlikely (SIZE_MAX - total_size - tzspec_len < extra))
+    goto lose;
+
+  /* Allocate enough memory including the extra block requested by the
+     caller.  */
+  transitions = (time_t *) malloc (total_size + tzspec_len + extra);
+  if (transitions == NULL)
+    goto lose;
+
+  type_idxs = (unsigned char *) transitions + (num_transitions
+					       * sizeof (time_t));
+  types = (struct ttinfo *) ((char *) transitions + types_idx);
+  zone_names = (char *) types + num_types * sizeof (struct ttinfo);
+  leaps = (struct leap *) ((char *) transitions + leaps_idx);
+  if (sizeof (time_t) == 8 && trans_width == 8)
+    tzspec = (char *) leaps + num_leaps * sizeof (struct leap) + extra;
+  else
+    tzspec = NULL;
+  if (extra > 0)
+    *extrap = (char *) &leaps[num_leaps];
+
+  if (sizeof (time_t) == 4 || __builtin_expect (trans_width == 8, 1))
+    {
+      if (__builtin_expect (__fread_unlocked (transitions, trans_width + 1,
+					      num_transitions, f)
+			    != num_transitions, 0))
+	goto lose;
+    }
+  else
+    {
+      if (__builtin_expect (__fread_unlocked (transitions, 4,
+					      num_transitions, f)
+			    != num_transitions, 0)
+	  || __builtin_expect (__fread_unlocked (type_idxs, 1, num_transitions,
+						 f) != num_transitions, 0))
+	goto lose;
+    }
+
+  /* Check for bogus indices in the data file, so we can hereafter
+     safely use type_idxs[T] as indices into `types' and never crash.  */
+  for (i = 0; i < num_transitions; ++i)
+    if (__glibc_unlikely (type_idxs[i] >= num_types))
+      goto lose;
+
+  if ((BYTE_ORDER != BIG_ENDIAN && (sizeof (time_t) == 4 || trans_width == 4))
+      || (BYTE_ORDER == BIG_ENDIAN && sizeof (time_t) == 8
+	  && trans_width == 4))
+    {
+      /* Decode the transition times, stored as 4-byte integers in
+	 network (big-endian) byte order.  We work from the end of
+	 the array so as not to clobber the next element to be
+	 processed when sizeof (time_t) > 4.  */
+      i = num_transitions;
+      while (i-- > 0)
+	transitions[i] = decode ((char *) transitions + i * 4);
+    }
+  else if (BYTE_ORDER != BIG_ENDIAN && sizeof (time_t) == 8)
+    {
+      /* Decode the transition times, stored as 8-byte integers in
+	 network (big-endian) byte order.  */
+      for (i = 0; i < num_transitions; ++i)
+	transitions[i] = decode64 ((char *) transitions + i * 8);
+    }
+
+  for (i = 0; i < num_types; ++i)
+    {
+      unsigned char x[4];
+      int c;
+      if (__builtin_expect (__fread_unlocked (x, 1,
+					      sizeof (x), f) != sizeof (x),
+			    0))
+	goto lose;
+      c = getc_unlocked (f);
+      if (__glibc_unlikely ((unsigned int) c > 1u))
+	goto lose;
+      types[i].isdst = c;
+      c = getc_unlocked (f);
+      if (__glibc_unlikely ((size_t) c > chars))
+	/* Bogus index in data file.  */
+	goto lose;
+      types[i].idx = c;
+      types[i].offset = (long int) decode (x);
+    }
+
+  if (__glibc_unlikely (__fread_unlocked (zone_names, 1, chars, f) != chars))
+    goto lose;
+
+  for (i = 0; i < num_leaps; ++i)
+    {
+      unsigned char x[8];
+      if (__builtin_expect (__fread_unlocked (x, 1, trans_width, f)
+			    != trans_width, 0))
+	goto lose;
+      if (sizeof (time_t) == 4 || trans_width == 4)
+	leaps[i].transition = (time_t) decode (x);
+      else
+	leaps[i].transition = (time_t) decode64 (x);
+
+      if (__glibc_unlikely (__fread_unlocked (x, 1, 4, f) != 4))
+	goto lose;
+      leaps[i].change = (long int) decode (x);
+    }
+
+  for (i = 0; i < num_isstd; ++i)
+    {
+      int c = getc_unlocked (f);
+      if (__glibc_unlikely (c == EOF))
+	goto lose;
+      types[i].isstd = c != 0;
+    }
+  while (i < num_types)
+    types[i++].isstd = 0;
+
+  for (i = 0; i < num_isgmt; ++i)
+    {
+      int c = getc_unlocked (f);
+      if (__glibc_unlikely (c == EOF))
+	goto lose;
+      types[i].isgmt = c != 0;
+    }
+  while (i < num_types)
+    types[i++].isgmt = 0;
+
+  /* Read the POSIX TZ-style information if possible.  */
+  if (sizeof (time_t) == 8 && tzspec != NULL)
+    {
+      /* Skip over the newline first.  */
+      if (getc_unlocked (f) != '\n'
+	  || (__fread_unlocked (tzspec, 1, tzspec_len - 1, f)
+	      != tzspec_len - 1))
+	tzspec = NULL;
+      else
+	tzspec[tzspec_len - 1] = '\0';
+    }
+  else if (sizeof (time_t) == 4 && tzhead.tzh_version[0] != '\0')
+    {
+      /* Get the TZ string.  */
+      if (__builtin_expect (__fread_unlocked ((void *) &tzhead,
+					      sizeof (tzhead), 1, f) != 1, 0)
+	  || (memcmp (tzhead.tzh_magic, TZ_MAGIC, sizeof (tzhead.tzh_magic))
+	      != 0))
+	goto lose;
+
+      size_t num_transitions2 = (size_t) decode (tzhead.tzh_timecnt);
+      size_t num_types2 = (size_t) decode (tzhead.tzh_typecnt);
+      size_t chars2 = (size_t) decode (tzhead.tzh_charcnt);
+      size_t num_leaps2 = (size_t) decode (tzhead.tzh_leapcnt);
+      size_t num_isstd2 = (size_t) decode (tzhead.tzh_ttisstdcnt);
+      size_t num_isgmt2 = (size_t) decode (tzhead.tzh_ttisgmtcnt);
+
+      /* Position the stream before the second header.  */
+      size_t to_skip = (num_transitions2 * (8 + 1)
+			+ num_types2 * 6
+			+ chars2
+			+ num_leaps2 * 12
+			+ num_isstd2
+			+ num_isgmt2);
+      off_t off;
+      if (fseek (f, to_skip, SEEK_CUR) != 0
+	  || (off = __ftello (f)) < 0
+	  || st.st_size < off + 2)
+	goto lose;
+
+      tzspec_len = st.st_size - off - 1;
+      if (tzspec_len == 0)
+	goto lose;
+      char *tzstr = malloc (tzspec_len);
+      if (tzstr == NULL)
+	goto lose;
+      if (getc_unlocked (f) != '\n'
+	  || (__fread_unlocked (tzstr, 1, tzspec_len - 1, f)
+	      != tzspec_len - 1))
+	{
+	  free (tzstr);
+	  goto lose;
+	}
+      tzstr[tzspec_len - 1] = '\0';
+      tzspec = __tzstring (tzstr);
+      free (tzstr);
+    }
+
+  /* Don't use an empty TZ string.  */
+  if (tzspec != NULL && tzspec[0] == '\0')
+    tzspec = NULL;
+
+  fclose (f);
+
+  /* First "register" all timezone names.  */
+  for (i = 0; i < num_types; ++i)
+    (void) __tzstring (&zone_names[types[i].idx]);
+
+  /* Find the standard and daylight time offsets used by the rule file.
+     We choose the offsets in the types of each flavor that are
+     transitioned to earliest in time.  */
+  __tzname[0] = NULL;
+  __tzname[1] = NULL;
+  for (i = num_transitions; i > 0; )
+    {
+      int type = type_idxs[--i];
+      int dst = types[type].isdst;
+
+      if (__tzname[dst] == NULL)
+	{
+	  int idx = types[type].idx;
+
+	  __tzname[dst] = __tzstring (&zone_names[idx]);
+
+	  if (__tzname[1 - dst] != NULL)
+	    break;
+	}
+    }
+  if (__tzname[0] == NULL)
+    {
+      /* This should only happen if there are no transition rules.
+	 In this case there should be only one single type.  */
+      assert (num_types == 1);
+      __tzname[0] = __tzstring (zone_names);
+    }
+  if (__tzname[1] == NULL)
+    __tzname[1] = __tzname[0];
+
+  compute_tzname_max (chars);
+
+  if (num_transitions == 0)
+    /* Use the first rule (which should also be the only one).  */
+    rule_stdoff = rule_dstoff = types[0].offset;
+  else
+    {
+      int stdoff_set = 0, dstoff_set = 0;
+      rule_stdoff = rule_dstoff = 0;
+      i = num_transitions - 1;
+      do
+	{
+	  if (!stdoff_set && !types[type_idxs[i]].isdst)
+	    {
+	      stdoff_set = 1;
+	      rule_stdoff = types[type_idxs[i]].offset;
+	    }
+	  else if (!dstoff_set && types[type_idxs[i]].isdst)
+	    {
+	      dstoff_set = 1;
+	      rule_dstoff = types[type_idxs[i]].offset;
+	    }
+	  if (stdoff_set && dstoff_set)
+	    break;
+	}
+      while (i-- > 0);
+
+      if (!dstoff_set)
+	rule_dstoff = rule_stdoff;
+    }
+
+  __daylight = rule_stdoff != rule_dstoff;
+  __timezone = -rule_stdoff;
+
+ done:
+  __use_tzfile = 1;
+  free (new);
+  return;
+
+ lose:
+  fclose (f);
+ ret_free_transitions:
+  free (new);
+  free ((void *) transitions);
+  transitions = NULL;
+}
+
+/* The user specified a hand-made timezone, but not its DST rules.
+   We will use the names and offsets from the user, and the rules
+   from the TZDEFRULES file.  */
+
+void
+__tzfile_default (const char *std, const char *dst,
+		  long int stdoff, long int dstoff)
+{
+  size_t stdlen = strlen (std) + 1;
+  size_t dstlen = strlen (dst) + 1;
+  size_t i;
+  int isdst;
+  char *cp;
+
+  __tzfile_read (TZDEFRULES, stdlen + dstlen, &cp);
+  if (!__use_tzfile)
+    return;
+
+  if (num_types < 2)
+    {
+      __use_tzfile = 0;
+      return;
+    }
+
+  /* Ignore the zone names read from the file and use the given ones
+     instead.  */
+  __mempcpy (__mempcpy (cp, std, stdlen), dst, dstlen);
+  zone_names = cp;
+
+  /* Now there are only two zones, regardless of what the file contained.  */
+  num_types = 2;
+
+  /* Now correct the transition times for the user-specified standard and
+     daylight offsets from GMT.  */
+  isdst = 0;
+  for (i = 0; i < num_transitions; ++i)
+    {
+      struct ttinfo *trans_type = &types[type_idxs[i]];
+
+      /* We will use only types 0 (standard) and 1 (daylight).
+	 Fix up this transition to point to whichever matches
+	 the flavor of its original type.  */
+      type_idxs[i] = trans_type->isdst;
+
+      if (trans_type->isgmt)
+	/* The transition time is in GMT.  No correction to apply.  */ ;
+      else if (isdst && !trans_type->isstd)
+	/* The type says this transition is in "local wall clock time", and
+	   wall clock time as of the previous transition was DST.  Correct
+	   for the difference between the rule's DST offset and the user's
+	   DST offset.  */
+	transitions[i] += dstoff - rule_dstoff;
+      else
+	/* This transition is in "local wall clock time", and wall clock
+	   time as of this iteration is non-DST.  Correct for the
+	   difference between the rule's standard offset and the user's
+	   standard offset.  */
+	transitions[i] += stdoff - rule_stdoff;
+
+      /* The DST state of "local wall clock time" for the next iteration is
+	 as specified by this transition.  */
+      isdst = trans_type->isdst;
+    }
+
+  /* Now that we adjusted the transitions to the requested offsets,
+     reset the rule_stdoff and rule_dstoff values appropriately.  They
+     are used elsewhere.  */
+  rule_stdoff = stdoff;
+  rule_dstoff = dstoff;
+
+  /* Reset types 0 and 1 to describe the user's settings.  */
+  types[0].idx = 0;
+  types[0].offset = stdoff;
+  types[0].isdst = 0;
+  types[1].idx = stdlen;
+  types[1].offset = dstoff;
+  types[1].isdst = 1;
+
+  /* Reset the zone names to point to the user's names.  */
+  __tzname[0] = (char *) std;
+  __tzname[1] = (char *) dst;
+
+  /* Set the timezone.  */
+  __timezone = -types[0].offset;
+
+  compute_tzname_max (stdlen + dstlen);
+
+  /* Invalidate the tzfile attribute cache to force rereading
+     TZDEFRULES the next time it is used.  */
+  tzfile_dev = 0;
+  tzfile_ino = 0;
+  tzfile_mtime = 0;
+}
+
+void
+__tzfile_compute (time_t timer, int use_localtime,
+		  long int *leap_correct, int *leap_hit,
+		  struct tm *tp)
+{
+  size_t i;
+
+  if (use_localtime)
+    {
+      __tzname[0] = NULL;
+      __tzname[1] = NULL;
+
+      if (__glibc_unlikely (num_transitions == 0 || timer < transitions[0]))
+	{
+	  /* TIMER is before any transition (or there are no transitions).
+	     Choose the first non-DST type
+	     (or the first if they're all DST types).  */
+	  i = 0;
+	  while (i < num_types && types[i].isdst)
+	    {
+	      if (__tzname[1] == NULL)
+		__tzname[1] = __tzstring (&zone_names[types[i].idx]);
+
+	      ++i;
+	    }
+
+	  if (i == num_types)
+	    i = 0;
+	  __tzname[0] = __tzstring (&zone_names[types[i].idx]);
+	  if (__tzname[1] == NULL)
+	    {
+	      size_t j = i;
+	      while (j < num_types)
+		if (types[j].isdst)
+		  {
+		    __tzname[1] = __tzstring (&zone_names[types[j].idx]);
+		    break;
+		  }
+		else
+		  ++j;
+	    }
+	}
+      else if (__glibc_unlikely (timer >= transitions[num_transitions - 1]))
+	{
+	  if (__glibc_unlikely (tzspec == NULL))
+	    {
+	    use_last:
+	      i = num_transitions;
+	      goto found;
+	    }
+
+	  /* Parse the POSIX TZ-style string.  */
+	  __tzset_parse_tz (tzspec);
+
+	  /* Convert to broken down structure.  If this fails do not
+	     use the string.  */
+	  if (__glibc_unlikely (! __offtime (&timer, 0, tp)))
+	    goto use_last;
+
+	  /* Use the rules from the TZ string to compute the change.  */
+	  __tz_compute (timer, tp, 1);
+
+	  /* If tzspec comes from posixrules loaded by __tzfile_default,
+	     override the STD and DST zone names with the ones user
+	     requested in TZ envvar.  */
+	  if (__glibc_unlikely (zone_names == (char *) &leaps[num_leaps]))
+	    {
+	      assert (num_types == 2);
+	      __tzname[0] = __tzstring (zone_names);
+	      __tzname[1] = __tzstring (&zone_names[strlen (zone_names) + 1]);
+	    }
+
+	  goto leap;
+	}
+      else
+	{
+	  /* Find the first transition after TIMER, and
+	     then pick the type of the transition before it.  */
+	  size_t lo = 0;
+	  size_t hi = num_transitions - 1;
+	  /* Assume that DST is changing twice a year and guess initial
+	     search spot from it.
+	     Half of a gregorian year has on average 365.2425 * 86400 / 2
+	     = 15778476 seconds.  */
+	  i = (transitions[num_transitions - 1] - timer) / 15778476;
+	  if (i < num_transitions)
+	    {
+	      i = num_transitions - 1 - i;
+	      if (timer < transitions[i])
+		{
+		  if (i < 10 || timer >= transitions[i - 10])
+		    {
+		      /* Linear search.  */
+		      while (timer < transitions[i - 1])
+			--i;
+		      goto found;
+		    }
+		  hi = i - 10;
+		}
+	      else
+		{
+		  if (i + 10 >= num_transitions || timer < transitions[i + 10])
+		    {
+		      /* Linear search.  */
+		      while (timer >= transitions[i])
+			++i;
+		      goto found;
+		    }
+		  lo = i + 10;
+		}
+	    }
+
+	  /* Binary search.  */
+	  /* assert (timer >= transitions[lo] && timer < transitions[hi]); */
+	  while (lo + 1 < hi)
+	    {
+	      i = (lo + hi) / 2;
+	      if (timer < transitions[i])
+		hi = i;
+	      else
+		lo = i;
+	    }
+	  i = hi;
+
+	found:
+	  /* assert (timer >= transitions[i - 1]
+	     && (i == num_transitions || timer < transitions[i])); */
+	  __tzname[types[type_idxs[i - 1]].isdst]
+	    = __tzstring (&zone_names[types[type_idxs[i - 1]].idx]);
+	  size_t j = i;
+	  while (j < num_transitions)
+	    {
+	      int type = type_idxs[j];
+	      int dst = types[type].isdst;
+	      int idx = types[type].idx;
+
+	      if (__tzname[dst] == NULL)
+		{
+		  __tzname[dst] = __tzstring (&zone_names[idx]);
+
+		  if (__tzname[1 - dst] != NULL)
+		    break;
+		}
+
+	      ++j;
+	    }
+
+	  if (__glibc_unlikely (__tzname[0] == NULL))
+	    __tzname[0] = __tzname[1];
+
+	  i = type_idxs[i - 1];
+	}
+
+      struct ttinfo *info = &types[i];
+      __daylight = rule_stdoff != rule_dstoff;
+      __timezone = -rule_stdoff;
+
+      if (__tzname[0] == NULL)
+	{
+	  /* This should only happen if there are no transition rules.
+	     In this case there should be only one single type.  */
+	  assert (num_types == 1);
+	  __tzname[0] = __tzstring (zone_names);
+	}
+      if (__tzname[1] == NULL)
+	/* There is no daylight saving time.  */
+	__tzname[1] = __tzname[0];
+      tp->tm_isdst = info->isdst;
+      assert (strcmp (&zone_names[info->idx], __tzname[tp->tm_isdst]) == 0);
+      tp->tm_zone = __tzname[tp->tm_isdst];
+      tp->tm_gmtoff = info->offset;
+    }
+
+ leap:
+  *leap_correct = 0L;
+  *leap_hit = 0;
+
+  /* Find the last leap second correction transition time before TIMER.  */
+  i = num_leaps;
+  do
+    if (i-- == 0)
+      return;
+  while (timer < leaps[i].transition);
+
+  /* Apply its correction.  */
+  *leap_correct = leaps[i].change;
+
+  if (timer == leaps[i].transition && /* Exactly at the transition time.  */
+      ((i == 0 && leaps[i].change > 0) ||
+       leaps[i].change > leaps[i - 1].change))
+    {
+      *leap_hit = 1;
+      while (i > 0
+	     && leaps[i].transition == leaps[i - 1].transition + 1
+	     && leaps[i].change == leaps[i - 1].change + 1)
+	{
+	  ++*leap_hit;
+	  --i;
+	}
+    }
+}
+
+static void
+internal_function
+compute_tzname_max (size_t chars)
+{
+  const char *p;
+
+  p = zone_names;
+  do
+    {
+      const char *start = p;
+      while (*p != '\0')
+	++p;
+      if ((size_t) (p - start) > __tzname_cur_max)
+	__tzname_cur_max = p - start;
+    }
+  while (++p < &zone_names[chars]);
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/tzset.c b/ap/libc/glibc/glibc-2.23/time/tzset.c
new file mode 100644
index 0000000..f65116c
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/tzset.c
@@ -0,0 +1,668 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ctype.h>
+#include <errno.h>
+#include <libc-lock.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+
+#define NOID
+#include <timezone/tzfile.h>
+
+char *__tzname[2] = { (char *) "GMT", (char *) "GMT" };
+int __daylight = 0;
+long int __timezone = 0L;
+
+weak_alias (__tzname, tzname)
+weak_alias (__daylight, daylight)
+weak_alias (__timezone, timezone)
+
+/* This locks all the state variables in tzfile.c and this file.  */
+__libc_lock_define_initialized (static, tzset_lock)
+
+
+#define	min(a, b)	((a) < (b) ? (a) : (b))
+#define	max(a, b)	((a) > (b) ? (a) : (b))
+#define	sign(x)		((x) < 0 ? -1 : 1)
+
+
+/* This structure contains all the information about a
+   timezone given in the POSIX standard TZ envariable.  */
+typedef struct
+  {
+    const char *name;
+
+    /* When to change.  */
+    enum { J0, J1, M } type;	/* Interpretation of:  */
+    unsigned short int m, n, d;	/* Month, week, day.  */
+    int secs;			/* Time of day.  */
+
+    long int offset;		/* Seconds east of GMT (west if < 0).  */
+
+    /* We cache the computed time of change for a
+       given year so we don't have to recompute it.  */
+    time_t change;	/* When to change to this zone.  */
+    int computed_for;	/* Year above is computed for.  */
+  } tz_rule;
+
+/* tz_rules[0] is standard, tz_rules[1] is daylight.  */
+static tz_rule tz_rules[2];
+
+
+static void compute_change (tz_rule *rule, int year) __THROW internal_function;
+static void tzset_internal (int always, int explicit)
+     __THROW internal_function;
+
+/* List of buffers containing time zone strings. */
+struct tzstring_l
+{
+  struct tzstring_l *next;
+  size_t len;  /* strlen(data) - doesn't count terminating NUL! */
+  char data[0];
+};
+
+static struct tzstring_l *tzstring_list;
+
+/* Allocate a permanent home for the first LEN characters of S.  It
+   will never be moved or deallocated, but may share space with other
+   strings.  Don't modify the returned string. */
+static char *
+__tzstring_len (const char *s, size_t len)
+{
+  char *p;
+  struct tzstring_l *t, *u, *new;
+
+  /* Walk the list and look for a match.  If this string is the same
+     as the end of an already-allocated string, it can share space. */
+  for (u = t = tzstring_list; t; u = t, t = t->next)
+    if (len <= t->len)
+      {
+	p = &t->data[t->len - len];
+	if (memcmp (s, p, len) == 0)
+	  return p;
+      }
+
+  /* Not found; allocate a new buffer. */
+  new = malloc (sizeof (struct tzstring_l) + len + 1);
+  if (!new)
+    return NULL;
+
+  new->next = NULL;
+  new->len = len;
+  memcpy (new->data, s, len);
+  new->data[len] = '\0';
+
+  if (u)
+    u->next = new;
+  else
+    tzstring_list = new;
+
+  return new->data;
+}
+
+/* Allocate a permanent home for S.  It will never be moved or
+   deallocated, but may share space with other strings.  Don't modify
+   the returned string. */
+char *
+__tzstring (const char *s)
+{
+  return __tzstring_len (s, strlen (s));
+}
+
+/* Maximum length of a timezone name.  tzset_internal keeps this up to date
+   (never decreasing it) when ! __use_tzfile.
+   tzfile.c keeps it up to date when __use_tzfile.  */
+size_t __tzname_cur_max;
+
+long int
+__tzname_max (void)
+{
+  __libc_lock_lock (tzset_lock);
+
+  tzset_internal (0, 0);
+
+  __libc_lock_unlock (tzset_lock);
+
+  return __tzname_cur_max;
+}
+
+static char *old_tz;
+
+static void
+internal_function
+update_vars (void)
+{
+  __daylight = tz_rules[0].offset != tz_rules[1].offset;
+  __timezone = -tz_rules[0].offset;
+  __tzname[0] = (char *) tz_rules[0].name;
+  __tzname[1] = (char *) tz_rules[1].name;
+
+  /* Keep __tzname_cur_max up to date.  */
+  size_t len0 = strlen (__tzname[0]);
+  size_t len1 = strlen (__tzname[1]);
+  if (len0 > __tzname_cur_max)
+    __tzname_cur_max = len0;
+  if (len1 > __tzname_cur_max)
+    __tzname_cur_max = len1;
+}
+
+
+static unsigned int
+__attribute_noinline__
+compute_offset (unsigned int ss, unsigned int mm, unsigned int hh)
+{
+  return min (ss, 59) + min (mm, 59) * 60 + min (hh, 24) * 60 * 60;
+}
+
+/* Parses the time zone name at *TZP, and writes a pointer to an
+   interned string to tz_rules[WHICHRULE].name.  On success, advances
+   *TZP, and returns true.  Returns false otherwise.  */
+static bool
+parse_tzname (const char **tzp, int whichrule)
+{
+  const char *start = *tzp;
+  const char *p = start;
+  while (('a' <= *p && *p <= 'z')
+	 || ('A' <= *p && *p <= 'Z'))
+      ++p;
+  size_t len = p - start;
+  if (len < 3)
+    {
+      p = *tzp;
+      if (__glibc_unlikely (*p++ != '<'))
+	return false;
+      start = p;
+      while (('a' <= *p && *p <= 'z')
+	     || ('A' <= *p && *p <= 'Z')
+	     || ('0' <= *p && *p <= '9')
+	     || *p == '+' || *p == '-')
+	++p;
+      len = p - start;
+      if (*p++ != '>' || len < 3)
+	return false;
+    }
+
+  const char *name = __tzstring_len (start, len);
+  if (name == NULL)
+    return false;
+  tz_rules[whichrule].name = name;
+
+  *tzp = p;
+  return true;
+}
+
+/* Parses the time zone offset at *TZP, and writes it to
+   tz_rules[WHICHRULE].offset.  Returns true if the parse was
+   successful.  */
+static bool
+parse_offset (const char **tzp, int whichrule)
+{
+  const char *tz = *tzp;
+  if (whichrule == 0
+      && (*tz == '\0' || (*tz != '+' && *tz != '-' && !isdigit (*tz))))
+    return false;
+
+  long sign;
+  if (*tz == '-' || *tz == '+')
+    sign = *tz++ == '-' ? 1L : -1L;
+  else
+    sign = -1L;
+  *tzp = tz;
+
+  unsigned short int hh;
+  unsigned short mm = 0;
+  unsigned short ss = 0;
+  int consumed = 0;
+  if (sscanf (tz, "%hu%n:%hu%n:%hu%n",
+	      &hh, &consumed, &mm, &consumed, &ss, &consumed) > 0)
+    tz_rules[whichrule].offset = sign * compute_offset (ss, mm, hh);
+  else
+    /* Nothing could be parsed. */
+    if (whichrule == 0)
+      {
+	/* Standard time defaults to offset zero.  */
+	tz_rules[0].offset = 0;
+	return false;
+      }
+      else
+	/* DST defaults to one hour later than standard time.  */
+	tz_rules[1].offset = tz_rules[0].offset + (60 * 60);
+  *tzp = tz + consumed;
+  return true;
+}
+
+/* Parses the standard <-> DST rules at *TZP.  Updates
+   tz_rule[WHICHRULE].  On success, advances *TZP and returns true.
+   Otherwise, returns false.  */
+static bool
+parse_rule (const char **tzp, int whichrule)
+{
+  const char *tz = *tzp;
+  tz_rule *tzr = &tz_rules[whichrule];
+
+  /* Ignore comma to support string following the incorrect
+     specification in early POSIX.1 printings.  */
+  tz += *tz == ',';
+
+  /* Get the date of the change.  */
+  if (*tz == 'J' || isdigit (*tz))
+    {
+      char *end;
+      tzr->type = *tz == 'J' ? J1 : J0;
+      if (tzr->type == J1 && !isdigit (*++tz))
+	return false;
+      unsigned long int d = strtoul (tz, &end, 10);
+      if (end == tz || d > 365)
+	return false;
+      if (tzr->type == J1 && d == 0)
+	return false;
+      tzr->d = d;
+      tz = end;
+    }
+  else if (*tz == 'M')
+    {
+      tzr->type = M;
+      int consumed;
+      if (sscanf (tz, "M%hu.%hu.%hu%n",
+		  &tzr->m, &tzr->n, &tzr->d, &consumed) != 3
+	  || tzr->m < 1 || tzr->m > 12
+	  || tzr->n < 1 || tzr->n > 5 || tzr->d > 6)
+	return false;
+      tz += consumed;
+    }
+  else if (*tz == '\0')
+    {
+      /* Daylight time rules in the U.S. are defined in the U.S. Code,
+	 Title 15, Chapter 6, Subchapter IX - Standard Time.  These
+	 dates were established by Congress in the Energy Policy Act
+	 of 2005 [Pub. L. no. 109-58, 119 Stat 594 (2005)].
+	 Below is the equivalent of "M3.2.0,M11.1.0" [/2 not needed
+	 since 2:00AM is the default].  */
+      tzr->type = M;
+      if (tzr == &tz_rules[0])
+	{
+	  tzr->m = 3;
+	  tzr->n = 2;
+	  tzr->d = 0;
+	}
+      else
+	{
+	  tzr->m = 11;
+	  tzr->n = 1;
+	  tzr->d = 0;
+	}
+    }
+  else
+    return false;
+
+  if (*tz != '\0' && *tz != '/' && *tz != ',')
+    return false;
+  else if (*tz == '/')
+    {
+      /* Get the time of day of the change.  */
+      int negative;
+      ++tz;
+      if (*tz == '\0')
+	return false;
+      negative = *tz == '-';
+      tz += negative;
+      /* Default to 2:00 AM.  */
+      unsigned short hh = 2;
+      unsigned short mm = 0;
+      unsigned short ss = 0;
+      int consumed = 0;
+      sscanf (tz, "%hu%n:%hu%n:%hu%n",
+	      &hh, &consumed, &mm, &consumed, &ss, &consumed);;
+      tz += consumed;
+      tzr->secs = (negative ? -1 : 1) * ((hh * 60 * 60) + (mm * 60) + ss);
+    }
+  else
+    /* Default to 2:00 AM.  */
+    tzr->secs = 2 * 60 * 60;
+
+  tzr->computed_for = -1;
+  *tzp = tz;
+  return true;
+}
+
+/* Parse the POSIX TZ-style string.  */
+void
+__tzset_parse_tz (const char *tz)
+{
+  /* Clear out old state and reset to unnamed UTC.  */
+  memset (tz_rules, '\0', sizeof tz_rules);
+  tz_rules[0].name = tz_rules[1].name = "";
+
+  /* Get the standard timezone name.  */
+  if (parse_tzname (&tz, 0) && parse_offset (&tz, 0))
+    {
+      /* Get the DST timezone name (if any).  */
+      if (*tz != '\0')
+	{
+	  if (parse_tzname (&tz, 1))
+	    {
+	      parse_offset (&tz, 1);
+	      if (*tz == '\0' || (tz[0] == ',' && tz[1] == '\0'))
+		{
+		  /* There is no rule.  See if there is a default rule
+		     file.  */
+		  __tzfile_default (tz_rules[0].name, tz_rules[1].name,
+				    tz_rules[0].offset, tz_rules[1].offset);
+		  if (__use_tzfile)
+		    {
+		      free (old_tz);
+		      old_tz = NULL;
+		      return;
+		    }
+		}
+	    }
+	  /* Figure out the standard <-> DST rules.  */
+	  if (parse_rule (&tz, 0))
+	    parse_rule (&tz, 1);
+	}
+      else
+	{
+	  /* There is no DST.  */
+	  tz_rules[1].name = tz_rules[0].name;
+	  tz_rules[1].offset = tz_rules[0].offset;
+	}
+    }
+
+  update_vars ();
+}
+
+/* Interpret the TZ envariable.  */
+static void
+internal_function
+tzset_internal (int always, int explicit)
+{
+  static int is_initialized;
+  const char *tz;
+
+  if (is_initialized && !always)
+    return;
+  is_initialized = 1;
+
+  /* Examine the TZ environment variable.  */
+  tz = getenv ("TZ");
+  if (tz == NULL && !explicit)
+    /* Use the site-wide default.  This is a file name which means we
+       would not see changes to the file if we compare only the file
+       name for change.  We want to notice file changes if tzset() has
+       been called explicitly.  Leave TZ as NULL in this case.  */
+    tz = TZDEFAULT;
+  if (tz && *tz == '\0')
+    /* User specified the empty string; use UTC explicitly.  */
+    tz = "Universal";
+
+  /* A leading colon means "implementation defined syntax".
+     We ignore the colon and always use the same algorithm:
+     try a data file, and if none exists parse the 1003.1 syntax.  */
+  if (tz && *tz == ':')
+    ++tz;
+
+  /* Check whether the value changed since the last run.  */
+  if (old_tz != NULL && tz != NULL && strcmp (tz, old_tz) == 0)
+    /* No change, simply return.  */
+    return;
+
+  if (tz == NULL)
+    /* No user specification; use the site-wide default.  */
+    tz = TZDEFAULT;
+
+  tz_rules[0].name = NULL;
+  tz_rules[1].name = NULL;
+
+  /* Save the value of `tz'.  */
+  free (old_tz);
+  old_tz = tz ? __strdup (tz) : NULL;
+
+  /* Try to read a data file.  */
+  __tzfile_read (tz, 0, NULL);
+  if (__use_tzfile)
+    return;
+
+  /* No data file found.  Default to UTC if nothing specified.  */
+
+  if (tz == NULL || *tz == '\0'
+      || (TZDEFAULT != NULL && strcmp (tz, TZDEFAULT) == 0))
+    {
+      memset (tz_rules, '\0', sizeof tz_rules);
+      tz_rules[0].name = tz_rules[1].name = "UTC";
+      if (J0 != 0)
+	tz_rules[0].type = tz_rules[1].type = J0;
+      tz_rules[0].change = tz_rules[1].change = (time_t) -1;
+      update_vars ();
+      return;
+    }
+
+  __tzset_parse_tz (tz);
+}
+
+/* Figure out the exact time (as a time_t) in YEAR
+   when the change described by RULE will occur and
+   put it in RULE->change, saving YEAR in RULE->computed_for.  */
+static void
+internal_function
+compute_change (tz_rule *rule, int year)
+{
+  time_t t;
+
+  if (year != -1 && rule->computed_for == year)
+    /* Operations on times in 2 BC will be slower.  Oh well.  */
+    return;
+
+  /* First set T to January 1st, 0:00:00 GMT in YEAR.  */
+  if (year > 1970)
+    t = ((year - 1970) * 365
+	 + /* Compute the number of leapdays between 1970 and YEAR
+	      (exclusive).  There is a leapday every 4th year ...  */
+	 + ((year - 1) / 4 - 1970 / 4)
+	 /* ... except every 100th year ... */
+	 - ((year - 1) / 100 - 1970 / 100)
+	 /* ... but still every 400th year.  */
+	 + ((year - 1) / 400 - 1970 / 400)) * SECSPERDAY;
+  else
+    t = 0;
+
+  switch (rule->type)
+    {
+    case J1:
+      /* Jn - Julian day, 1 == January 1, 60 == March 1 even in leap years.
+	 In non-leap years, or if the day number is 59 or less, just
+	 add SECSPERDAY times the day number-1 to the time of
+	 January 1, midnight, to get the day.  */
+      t += (rule->d - 1) * SECSPERDAY;
+      if (rule->d >= 60 && __isleap (year))
+	t += SECSPERDAY;
+      break;
+
+    case J0:
+      /* n - Day of year.
+	 Just add SECSPERDAY times the day number to the time of Jan 1st.  */
+      t += rule->d * SECSPERDAY;
+      break;
+
+    case M:
+      /* Mm.n.d - Nth "Dth day" of month M.  */
+      {
+	unsigned int i;
+	int d, m1, yy0, yy1, yy2, dow;
+	const unsigned short int *myday =
+	  &__mon_yday[__isleap (year)][rule->m];
+
+	/* First add SECSPERDAY for each day in months before M.  */
+	t += myday[-1] * SECSPERDAY;
+
+	/* Use Zeller's Congruence to get day-of-week of first day of month. */
+	m1 = (rule->m + 9) % 12 + 1;
+	yy0 = (rule->m <= 2) ? (year - 1) : year;
+	yy1 = yy0 / 100;
+	yy2 = yy0 % 100;
+	dow = ((26 * m1 - 2) / 10 + 1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
+	if (dow < 0)
+	  dow += 7;
+
+	/* DOW is the day-of-week of the first day of the month.  Get the
+	   day-of-month (zero-origin) of the first DOW day of the month.  */
+	d = rule->d - dow;
+	if (d < 0)
+	  d += 7;
+	for (i = 1; i < rule->n; ++i)
+	  {
+	    if (d + 7 >= (int) myday[0] - myday[-1])
+	      break;
+	    d += 7;
+	  }
+
+	/* D is the day-of-month (zero-origin) of the day we want.  */
+	t += d * SECSPERDAY;
+      }
+      break;
+    }
+
+  /* T is now the Epoch-relative time of 0:00:00 GMT on the day we want.
+     Just add the time of day and local offset from GMT, and we're done.  */
+
+  rule->change = t - rule->offset + rule->secs;
+  rule->computed_for = year;
+}
+
+
+/* Figure out the correct timezone for TM and set `__tzname',
+   `__timezone', and `__daylight' accordingly.  */
+void
+internal_function
+__tz_compute (time_t timer, struct tm *tm, int use_localtime)
+{
+  compute_change (&tz_rules[0], 1900 + tm->tm_year);
+  compute_change (&tz_rules[1], 1900 + tm->tm_year);
+
+  if (use_localtime)
+    {
+      int isdst;
+
+      /* We have to distinguish between northern and southern
+	 hemisphere.  For the latter the daylight saving time
+	 ends in the next year.  */
+      if (__builtin_expect (tz_rules[0].change
+			    > tz_rules[1].change, 0))
+	isdst = (timer < tz_rules[1].change
+		 || timer >= tz_rules[0].change);
+      else
+	isdst = (timer >= tz_rules[0].change
+		 && timer < tz_rules[1].change);
+      tm->tm_isdst = isdst;
+      tm->tm_zone = __tzname[isdst];
+      tm->tm_gmtoff = tz_rules[isdst].offset;
+    }
+}
+
+/* Reinterpret the TZ environment variable and set `tzname'.  */
+#undef tzset
+
+void
+__tzset (void)
+{
+  __libc_lock_lock (tzset_lock);
+
+  tzset_internal (1, 1);
+
+  if (!__use_tzfile)
+    {
+      /* Set `tzname'.  */
+      __tzname[0] = (char *) tz_rules[0].name;
+      __tzname[1] = (char *) tz_rules[1].name;
+    }
+
+  __libc_lock_unlock (tzset_lock);
+}
+weak_alias (__tzset, tzset)
+
+/* Return the `struct tm' representation of *TIMER in the local timezone.
+   Use local time if USE_LOCALTIME is nonzero, UTC otherwise.  */
+struct tm *
+__tz_convert (const time_t *timer, int use_localtime, struct tm *tp)
+{
+  long int leap_correction;
+  int leap_extra_secs;
+
+  if (timer == NULL)
+    {
+      __set_errno (EINVAL);
+      return NULL;
+    }
+
+  __libc_lock_lock (tzset_lock);
+
+  /* Update internal database according to current TZ setting.
+     POSIX.1 8.3.7.2 says that localtime_r is not required to set tzname.
+     This is a good idea since this allows at least a bit more parallelism.  */
+  tzset_internal (tp == &_tmbuf && use_localtime, 1);
+
+  if (__use_tzfile)
+    __tzfile_compute (*timer, use_localtime, &leap_correction,
+		      &leap_extra_secs, tp);
+  else
+    {
+      if (! __offtime (timer, 0, tp))
+	tp = NULL;
+      else
+	__tz_compute (*timer, tp, use_localtime);
+      leap_correction = 0L;
+      leap_extra_secs = 0;
+    }
+
+  __libc_lock_unlock (tzset_lock);
+
+  if (tp)
+    {
+      if (! use_localtime)
+	{
+	  tp->tm_isdst = 0;
+	  tp->tm_zone = "GMT";
+	  tp->tm_gmtoff = 0L;
+	}
+
+      if (__offtime (timer, tp->tm_gmtoff - leap_correction, tp))
+        tp->tm_sec += leap_extra_secs;
+      else
+	tp = NULL;
+    }
+
+  return tp;
+}
+
+
+libc_freeres_fn (free_mem)
+{
+  while (tzstring_list != NULL)
+    {
+      struct tzstring_l *old = tzstring_list;
+
+      tzstring_list = tzstring_list->next;
+      free (old);
+    }
+  free (old_tz);
+  old_tz = NULL;
+}
diff --git a/ap/libc/glibc/glibc-2.23/time/wcsftime.c b/ap/libc/glibc/glibc-2.23/time/wcsftime.c
new file mode 100644
index 0000000..a8f06f1
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/wcsftime.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <wchar.h>
+#include <locale/localeinfo.h>
+
+
+size_t
+wcsftime (wchar_t *s, size_t maxsize, const wchar_t *format,
+	  const struct tm *tp)
+{
+  return __wcsftime_l (s, maxsize, format, tp, _NL_CURRENT_LOCALE);
+}
+libc_hidden_def (wcsftime)
diff --git a/ap/libc/glibc/glibc-2.23/time/wcsftime_l.c b/ap/libc/glibc/glibc-2.23/time/wcsftime_l.c
new file mode 100644
index 0000000..f771417
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/time/wcsftime_l.c
@@ -0,0 +1,25 @@
+/* Copyright (C) 2002-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <wchar.h>
+#include <wctype.h>
+
+#define USE_IN_EXTENDED_LOCALE_MODEL 1
+#define COMPILE_WIDE	1
+#include "strftime_l.c"
+
+weak_alias (__wcsftime_l, wcsftime_l)