[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/stdlib/fpioconst.h b/ap/libc/glibc/glibc-2.23/stdlib/fpioconst.h
new file mode 100644
index 0000000..df0185f
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdlib/fpioconst.h
@@ -0,0 +1,74 @@
+/* Header file for constants used in floating point <-> decimal conversions.
+ 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/>. */
+
+#ifndef _FPIOCONST_H
+#define _FPIOCONST_H
+
+#include <float.h>
+#include <math.h>
+#include <gmp.h>
+
+
+/* These values are used by __printf_fp, where they are noncritical (if the
+ value is not large enough, it will just be slower); and by
+ strtof/strtod/strtold, where it is critical (it's used for overflow
+ detection).
+
+ XXX These should be defined in <float.h>. For the time being, we have the
+ IEEE754 values here. */
+
+#if !defined __NO_LONG_DOUBLE_MATH && __LDBL_MAX_EXP__ > 1024
+# define LDBL_MAX_10_EXP_LOG 12 /* = floor(log_2(LDBL_MAX_10_EXP)) */
+#else
+# define LDBL_MAX_10_EXP_LOG 8 /* = floor(log_2(LDBL_MAX_10_EXP)) */
+#endif
+#define DBL_MAX_10_EXP_LOG 8 /* = floor(log_2(DBL_MAX_10_EXP)) */
+#define FLT_MAX_10_EXP_LOG 5 /* = floor(log_2(FLT_MAX_10_EXP)) */
+
+/* For strtold, we need powers of 10 up to floor (log_2 (LDBL_MANT_DIG
+ - LDBL_MIN_EXP + 2)). */
+#if !defined __NO_LONG_DOUBLE_MATH && __LDBL_MAX_EXP__ > 1024
+# define FPIOCONST_POW10_ARRAY_SIZE 15
+#else
+# define FPIOCONST_POW10_ARRAY_SIZE 11
+#endif
+
+/* The array with the number representation. */
+extern const mp_limb_t __tens[] attribute_hidden;
+
+/* Table of powers of ten. This is used by __printf_fp and by
+ strtof/strtod/strtold. */
+struct mp_power
+ {
+ size_t arrayoff; /* Offset in `__tens'. */
+ mp_size_t arraysize; /* Size of the array. */
+ int p_expo; /* Exponent of the number 10^(2^i). */
+ int m_expo; /* Exponent of the number 10^-(2^i-1). */
+ };
+extern const struct mp_power _fpioconst_pow10[FPIOCONST_POW10_ARRAY_SIZE]
+ attribute_hidden;
+
+/* The constants in the array `_fpioconst_pow10' have an offset. */
+#if BITS_PER_MP_LIMB == 32
+# define _FPIO_CONST_OFFSET 2
+#else
+# define _FPIO_CONST_OFFSET 1
+#endif
+
+
+#endif /* fpioconst.h */