diff --git a/ap/libc/glibc/glibc-2.23/stdlib/test-a64l.c b/ap/libc/glibc/glibc-2.23/stdlib/test-a64l.c
new file mode 100644
index 0000000..15899ea
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdlib/test-a64l.c
@@ -0,0 +1,80 @@
+/* Test program for the l64a and a64l functions.
+   Copyright (C) 2001-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@suse.de>.
+
+   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>
+
+/* Prototype for our test function.  */
+extern int do_test (int argc, char *argv[]);
+#include <test-skeleton.c>
+
+struct a64l_test
+{
+  const char *base64;
+  long int value;
+};
+
+static const struct a64l_test tests[] =
+  {
+    { "./", 64 },
+    { "", 0 },
+    { "/", 1 },
+    { "FT", 2001 },
+    { "zzzzz1", 0xffffffff },
+    { "zzzz1", 0x3ffffff },
+    { "zzz1", 0xfffff },
+    { "zz1", 0x3fff },
+    { "z1", 0xff },
+    { "1", 0x3 },
+    { NULL, 0 }
+  };
+
+int
+do_test (int argc, char ** argv)
+{
+  const struct a64l_test *at;
+  long int l;
+  const char *s;
+  int status = 0;
+
+  for (at = tests; at->base64 != NULL; ++at)
+    {
+      printf ("a64l (\"%s\")", at->base64);
+      l = a64l (at->base64);
+      if (l == at->value)
+	puts ("\tOK");
+      else
+	{
+	  printf ("\tBAD\n  returns %ld, expected %ld\n", l, at->value);
+	  status = 1;
+	}
+      printf ("l64a (%ld)", at->value);
+      s = l64a (at->value);
+      if (strcmp (s, at->base64) == 0)
+	puts ("\tOK");
+      else
+	{
+	  printf ("\tBAD\n  returns \"%s\", expected \"%s\"\n", s, at->base64);
+	  status = 1;
+	}
+    }
+
+  return status ? EXIT_FAILURE : EXIT_SUCCESS;
+}