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153 lines
4.4 KiB
C
153 lines
4.4 KiB
C
/* Copyright (C) 1991-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/*
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* ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types <limits.h>
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*/
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#ifndef _LIBC_LIMITS_H_
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#define _LIBC_LIMITS_H_ 1
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#include <features.h>
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/* Maximum length of any multibyte character in any locale.
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We define this value here since the gcc header does not define
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the correct value. */
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#define MB_LEN_MAX 16
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/* If we are not using GNU CC we have to define all the symbols ourself.
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Otherwise use gcc's definitions (see below). */
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#if !defined __GNUC__ || __GNUC__ < 2
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/* We only protect from multiple inclusion here, because all the other
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#include's protect themselves, and in GCC 2 we may #include_next through
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multiple copies of this file before we get to GCC's. */
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# ifndef _LIMITS_H
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# define _LIMITS_H 1
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#include <bits/wordsize.h>
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/* We don't have #include_next.
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Define ANSI <limits.h> for standard 32-bit words. */
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/* These assume 8-bit `char's, 16-bit `short int's,
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and 32-bit `int's and `long int's. */
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/* Number of bits in a `char'. */
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# define CHAR_BIT 8
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/* Minimum and maximum values a `signed char' can hold. */
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# define SCHAR_MIN (-128)
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# define SCHAR_MAX 127
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/* Maximum value an `unsigned char' can hold. (Minimum is 0.) */
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# define UCHAR_MAX 255
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/* Minimum and maximum values a `char' can hold. */
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# ifdef __CHAR_UNSIGNED__
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# define CHAR_MIN 0
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# define CHAR_MAX UCHAR_MAX
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# else
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# define CHAR_MIN SCHAR_MIN
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# define CHAR_MAX SCHAR_MAX
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# endif
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/* Minimum and maximum values a `signed short int' can hold. */
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# define SHRT_MIN (-32768)
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# define SHRT_MAX 32767
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/* Maximum value an `unsigned short int' can hold. (Minimum is 0.) */
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# define USHRT_MAX 65535
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/* Minimum and maximum values a `signed int' can hold. */
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# define INT_MIN (-INT_MAX - 1)
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# define INT_MAX 2147483647
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/* Maximum value an `unsigned int' can hold. (Minimum is 0.) */
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# define UINT_MAX 4294967295U
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/* Minimum and maximum values a `signed long int' can hold. */
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# if __WORDSIZE == 64
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# define LONG_MAX 9223372036854775807L
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# else
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# define LONG_MAX 2147483647L
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# endif
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# define LONG_MIN (-LONG_MAX - 1L)
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/* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */
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# if __WORDSIZE == 64
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# define ULONG_MAX 18446744073709551615UL
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# else
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# define ULONG_MAX 4294967295UL
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# endif
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# ifdef __USE_ISOC99
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/* Minimum and maximum values a `signed long long int' can hold. */
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# define LLONG_MAX 9223372036854775807LL
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# define LLONG_MIN (-LLONG_MAX - 1LL)
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/* Maximum value an `unsigned long long int' can hold. (Minimum is 0.) */
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# define ULLONG_MAX 18446744073709551615ULL
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# endif /* ISO C99 */
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# endif /* limits.h */
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#endif /* GCC 2. */
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#endif /* !_LIBC_LIMITS_H_ */
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/* Get the compiler's limits.h, which defines almost all the ISO constants.
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We put this #include_next outside the double inclusion check because
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it should be possible to include this file more than once and still get
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the definitions from gcc's header. */
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#if defined __GNUC__ && !defined _GCC_LIMITS_H_
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/* `_GCC_LIMITS_H_' is what GCC's file defines. */
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# include_next <limits.h>
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#endif
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/* The <limits.h> files in some gcc versions don't define LLONG_MIN,
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LLONG_MAX, and ULLONG_MAX. Instead only the values gcc defined for
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ages are available. */
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#if defined __USE_ISOC99 && defined __GNUC__
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# ifndef LLONG_MIN
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# define LLONG_MIN (-LLONG_MAX-1)
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# endif
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# ifndef LLONG_MAX
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# define LLONG_MAX __LONG_LONG_MAX__
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# endif
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# ifndef ULLONG_MAX
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# define ULLONG_MAX (LLONG_MAX * 2ULL + 1)
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# endif
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#endif
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#ifdef __USE_POSIX
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/* POSIX adds things to <limits.h>. */
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# include <bits/posix1_lim.h>
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#endif
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#ifdef __USE_POSIX2
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# include <bits/posix2_lim.h>
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#endif
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#ifdef __USE_XOPEN
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# include <bits/xopen_lim.h>
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#endif
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