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- /* Copyright (C) 1991-2020 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
- <https://www.gnu.org/licenses/>. */
- /*
- * ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types <limits.h>
- */
- #ifndef _LIBC_LIMITS_H_
- #define _LIBC_LIMITS_H_ 1
- #define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
- #include <bits/libc-header-start.h>
- /* Maximum length of any multibyte character in any locale.
- We define this value here since the gcc header does not define
- the correct value. */
- #define MB_LEN_MAX 16
- /* If we are not using GNU CC we have to define all the symbols ourself.
- Otherwise use gcc's definitions (see below). */
- #if !defined __GNUC__ || __GNUC__ < 2
- /* We only protect from multiple inclusion here, because all the other
- #include's protect themselves, and in GCC 2 we may #include_next through
- multiple copies of this file before we get to GCC's. */
- # ifndef _LIMITS_H
- # define _LIMITS_H 1
- #include <bits/wordsize.h>
- /* We don't have #include_next.
- Define ANSI <limits.h> for standard 32-bit words. */
- /* These assume 8-bit `char's, 16-bit `short int's,
- and 32-bit `int's and `long int's. */
- /* Number of bits in a `char'. */
- # define CHAR_BIT 8
- /* Minimum and maximum values a `signed char' can hold. */
- # define SCHAR_MIN (-128)
- # define SCHAR_MAX 127
- /* Maximum value an `unsigned char' can hold. (Minimum is 0.) */
- # define UCHAR_MAX 255
- /* Minimum and maximum values a `char' can hold. */
- # ifdef __CHAR_UNSIGNED__
- # define CHAR_MIN 0
- # define CHAR_MAX UCHAR_MAX
- # else
- # define CHAR_MIN SCHAR_MIN
- # define CHAR_MAX SCHAR_MAX
- # endif
- /* Minimum and maximum values a `signed short int' can hold. */
- # define SHRT_MIN (-32768)
- # define SHRT_MAX 32767
- /* Maximum value an `unsigned short int' can hold. (Minimum is 0.) */
- # define USHRT_MAX 65535
- /* Minimum and maximum values a `signed int' can hold. */
- # define INT_MIN (-INT_MAX - 1)
- # define INT_MAX 2147483647
- /* Maximum value an `unsigned int' can hold. (Minimum is 0.) */
- # define UINT_MAX 4294967295U
- /* Minimum and maximum values a `signed long int' can hold. */
- # if __WORDSIZE == 64
- # define LONG_MAX 9223372036854775807L
- # else
- # define LONG_MAX 2147483647L
- # endif
- # define LONG_MIN (-LONG_MAX - 1L)
- /* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */
- # if __WORDSIZE == 64
- # define ULONG_MAX 18446744073709551615UL
- # else
- # define ULONG_MAX 4294967295UL
- # endif
- # ifdef __USE_ISOC99
- /* Minimum and maximum values a `signed long long int' can hold. */
- # define LLONG_MAX 9223372036854775807LL
- # define LLONG_MIN (-LLONG_MAX - 1LL)
- /* Maximum value an `unsigned long long int' can hold. (Minimum is 0.) */
- # define ULLONG_MAX 18446744073709551615ULL
- # endif /* ISO C99 */
- # endif /* limits.h */
- #endif /* GCC 2. */
- #endif /* !_LIBC_LIMITS_H_ */
- /* Get the compiler's limits.h, which defines almost all the ISO constants.
- We put this #include_next outside the double inclusion check because
- it should be possible to include this file more than once and still get
- the definitions from gcc's header. */
- #if defined __GNUC__ && !defined _GCC_LIMITS_H_
- /* `_GCC_LIMITS_H_' is what GCC's file defines. */
- # include_next <limits.h>
- #endif
- /* The <limits.h> files in some gcc versions don't define LLONG_MIN,
- LLONG_MAX, and ULLONG_MAX. Instead only the values gcc defined for
- ages are available. */
- #if defined __USE_ISOC99 && defined __GNUC__
- # ifndef LLONG_MIN
- # define LLONG_MIN (-LLONG_MAX-1)
- # endif
- # ifndef LLONG_MAX
- # define LLONG_MAX __LONG_LONG_MAX__
- # endif
- # ifndef ULLONG_MAX
- # define ULLONG_MAX (LLONG_MAX * 2ULL + 1)
- # endif
- #endif
- /* The integer width macros are not defined by GCC's <limits.h> before
- GCC 7, or if _GNU_SOURCE rather than
- __STDC_WANT_IEC_60559_BFP_EXT__ is used to enable this feature. */
- #if __GLIBC_USE (IEC_60559_BFP_EXT_C2X)
- # ifndef CHAR_WIDTH
- # define CHAR_WIDTH 8
- # endif
- # ifndef SCHAR_WIDTH
- # define SCHAR_WIDTH 8
- # endif
- # ifndef UCHAR_WIDTH
- # define UCHAR_WIDTH 8
- # endif
- # ifndef SHRT_WIDTH
- # define SHRT_WIDTH 16
- # endif
- # ifndef USHRT_WIDTH
- # define USHRT_WIDTH 16
- # endif
- # ifndef INT_WIDTH
- # define INT_WIDTH 32
- # endif
- # ifndef UINT_WIDTH
- # define UINT_WIDTH 32
- # endif
- # ifndef LONG_WIDTH
- # define LONG_WIDTH __WORDSIZE
- # endif
- # ifndef ULONG_WIDTH
- # define ULONG_WIDTH __WORDSIZE
- # endif
- # ifndef LLONG_WIDTH
- # define LLONG_WIDTH 64
- # endif
- # ifndef ULLONG_WIDTH
- # define ULLONG_WIDTH 64
- # endif
- #endif /* Use IEC_60559_BFP_EXT. */
- #ifdef __USE_POSIX
- /* POSIX adds things to <limits.h>. */
- # include <bits/posix1_lim.h>
- #endif
- #ifdef __USE_POSIX2
- # include <bits/posix2_lim.h>
- #endif
- #ifdef __USE_XOPEN
- # include <bits/xopen_lim.h>
- #endif
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