mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 02:10:05 +00:00
6c79e60c34
* include/limits.h: Include gcc's header even if this file is found more than once before it (PR libc/778)
134 lines
3.9 KiB
C
134 lines
3.9 KiB
C
/* Copyright (C) 1991, 1992, 1996, 1997, 1998 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/*
|
|
* ISO C Standard: 4.14/2.2.4.2 Limits of integral types <limits.h>
|
|
*/
|
|
|
|
#ifndef _LIBC_LIMITS_H_
|
|
#define _LIBC_LIMITS_H_ 1
|
|
|
|
#include <features.h>
|
|
|
|
#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
|
|
|
|
|
|
/* 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 6
|
|
|
|
|
|
/* 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
|
|
|
|
/* 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.) */
|
|
# ifdef __STDC__
|
|
# define UINT_MAX 4294967295U
|
|
# else
|
|
# define UINT_MAX 4294967295
|
|
# endif
|
|
|
|
/* Minimum and maximum values a `signed long int' can hold. */
|
|
# ifdef __alpha__
|
|
# 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.) */
|
|
# ifdef __alpha__
|
|
# define ULONG_MAX 18446744073709551615UL
|
|
# else
|
|
# ifdef __STDC__
|
|
# define ULONG_MAX 4294967295UL
|
|
# else
|
|
# define ULONG_MAX 4294967295L
|
|
# endif
|
|
# endif
|
|
|
|
# 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
|