/* Copyright (C) 1991, 1992 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* * ANSI Standard: 4.14/2.2.4.2 Limits of integral types */ #ifndef _LIMITS_H #define _LIMITS_H 1 #include #ifdef __USE_POSIX /* POSIX adds things to . */ #include #endif #ifdef __USE_POSIX2 #include #endif /* Only if gcc 2.x is used and -traditional is not used, we can use * #include_next. #if __GNUC__ >= 2 && __STDC__ */ #if __GNUC__ >= 2 /* Have we done that? */ # if !defined(_GCC_LIMITS_H_) && !defined(_GCC_LIMITS_H) /* Get the compiler's limits.h, which defines all the ANSI * constants. */ /* This tells it not to look for another. */ # define _LIBC_LIMITS_H # define _LIBC_LIMITS_H_ # include_next # endif #else /* Not GCC 2. */ /* We don't have #include_next. Define ANSI 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 /* Maximum length of any multibyte character in any locale. Locale-writers should change this as necessary. */ #define MB_LEN_MAX 1 /* 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.) */ #ifdef __STDC__ #define UCHAR_MAX 255U #else #define UCHAR_MAX 255 #endif /* 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. */ #define LONG_MIN INT_MIN #define LONG_MAX INT_MAX /* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */ #define ULONG_MAX UINT_MAX #endif /* GCC 2. */ #ifndef RAND_MAX /* The largest number rand will return (same as INT_MAX). */ #define RAND_MAX INT_MAX #endif #endif /* limits.h */