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113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/* Copyright (C) 1991, 1992 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/*
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* ANSI Standard: 4.14/2.2.4.2 Limits of integral types <limits.h>
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*/
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#include <features.h>
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#ifdef __USE_POSIX
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/* POSIX adds things to <limits.h>. */
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#include <posix1_lim.h>
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#endif
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#ifdef __USE_POSIX2
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#include <posix2_lim.h>
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#endif
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#if __GNUC__ >= 2
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/* Get the compiler's limits.h, which defines all the ANSI constants. */
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#ifndef _LIBC_LIMITS_H_
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#define _LIBC_LIMITS_H_ /* This tells it not to look for another. */
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#endif
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#ifndef _GCC_LIMITS_H_ /* This is what GCC's file defines. */
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#include_next <limits.h>
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#endif
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#else /* Not GCC 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
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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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/* Maximum length of any multibyte character in any locale.
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Locale-writers should change this as necessary. */
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#define MB_LEN_MAX 1
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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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#ifdef __STDC__
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#define UCHAR_MAX 255U
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#else
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#define UCHAR_MAX 255
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#endif
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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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#ifdef __STDC__
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#define UINT_MAX 4294967295U
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#else
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#define UINT_MAX 4294967295
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#endif
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/* Minimum and maximum values a `signed long int' can hold. */
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#define LONG_MIN INT_MIN
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#define LONG_MAX INT_MAX
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/* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */
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#define ULONG_MAX UINT_MAX
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#endif /* limits.h */
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#endif /* GCC 2. */
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