git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0200214b | 1 | /* Copyright (C) 1991, 1992, 1996 Free Software Foundation, Inc. |
| 28f540f4 RM |
2 | This file is part of the GNU C Library. |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 5 | modify it under the terms of the GNU Library General Public License as | |
| 6 | published by the Free Software Foundation; either version 2 of the | |
| 7 | License, or (at your option) any later version. | |
| 8 | ||
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | Library General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Library General Public | |
| 15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
| 16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
| 17 | Cambridge, MA 02139, USA. */ | |
| 18 | ||
| 19 | /* | |
| 20 | * ANSI Standard: 4.14/2.2.4.2 Limits of integral types <limits.h> | |
| 21 | */ | |
| 22 | ||
| 23 | #include <features.h> | |
| 24 | ||
| 25 | #ifdef __USE_POSIX | |
| 26 | /* POSIX adds things to <limits.h>. */ | |
| 27 | #include <posix1_lim.h> | |
| 28 | #endif | |
| 29 | ||
| 30 | #ifdef __USE_POSIX2 | |
| 31 | #include <posix2_lim.h> | |
| 32 | #endif | |
| 33 | ||
| 34 | ||
| 35 | #if __GNUC__ >= 2 | |
| 36 | ||
| 37 | /* Get the compiler's limits.h, which defines all the ANSI constants. */ | |
| 38 | #ifndef _LIBC_LIMITS_H_ | |
| 39 | #define _LIBC_LIMITS_H_ /* This tells it not to look for another. */ | |
| 40 | #endif | |
| 41 | #ifndef _GCC_LIMITS_H_ /* This is what GCC's file defines. */ | |
| 42 | #include_next <limits.h> | |
| 43 | #endif | |
| 44 | ||
| 45 | #else /* Not GCC 2. */ | |
| 46 | ||
| 47 | /* We only protect from multiple inclusion here, because all the other | |
| 48 | #include's protect themselves, and in GCC 2 we may #include_next through | |
| 49 | multiple copies of this file before we get to GCC's. */ | |
| 50 | #ifndef _LIMITS_H | |
| 51 | #define _LIMITS_H | |
| 52 | ||
| 53 | /* We don't have #include_next. | |
| 54 | Define ANSI <limits.h> for standard 32-bit words. */ | |
| 55 | ||
| 56 | /* These assume 8-bit `char's, 16-bit `short int's, | |
| 57 | and 32-bit `int's and `long int's. */ | |
| 58 | ||
| 59 | /* Number of bits in a `char'. */ | |
| 60 | #define CHAR_BIT 8 | |
| 61 | ||
| 0200214b RM |
62 | /* Maximum length of any multibyte character in any locale. */ |
| 63 | #define MB_LEN_MAX 6 | |
| 28f540f4 RM |
64 | |
| 65 | /* Minimum and maximum values a `signed char' can hold. */ | |
| 66 | #define SCHAR_MIN (-128) | |
| 67 | #define SCHAR_MAX 127 | |
| 68 | ||
| 69 | /* Maximum value an `unsigned char' can hold. (Minimum is 0.) */ | |
| 70 | #ifdef __STDC__ | |
| 71 | #define UCHAR_MAX 255U | |
| 72 | #else | |
| 73 | #define UCHAR_MAX 255 | |
| 74 | #endif | |
| 75 | ||
| 76 | /* Minimum and maximum values a `char' can hold. */ | |
| 77 | #ifdef __CHAR_UNSIGNED__ | |
| 78 | #define CHAR_MIN 0 | |
| 79 | #define CHAR_MAX UCHAR_MAX | |
| 80 | #else | |
| 81 | #define CHAR_MIN SCHAR_MIN | |
| 82 | #define CHAR_MAX SCHAR_MAX | |
| 83 | #endif | |
| 84 | ||
| 85 | /* Minimum and maximum values a `signed short int' can hold. */ | |
| 86 | #define SHRT_MIN (-32768) | |
| 87 | #define SHRT_MAX 32767 | |
| 88 | ||
| 89 | /* Maximum value an `unsigned short int' can hold. (Minimum is 0.) */ | |
| 90 | #define USHRT_MAX 65535 | |
| 91 | ||
| 92 | /* Minimum and maximum values a `signed int' can hold. */ | |
| 93 | #define INT_MIN (- INT_MAX - 1) | |
| 94 | #define INT_MAX 2147483647 | |
| 95 | ||
| 96 | /* Maximum value an `unsigned int' can hold. (Minimum is 0.) */ | |
| 97 | #ifdef __STDC__ | |
| 98 | #define UINT_MAX 4294967295U | |
| 99 | #else | |
| 100 | #define UINT_MAX 4294967295 | |
| 101 | #endif | |
| 102 | ||
| b20e47cb RM |
103 | #ifdef __alpha__ |
| 104 | ||
| 105 | /* Minimum and maximum values a `signed long int' can hold. */ | |
| 106 | #define LONG_MAX 9223372036854775807L | |
| 107 | #define LONG_MIN (- LONG_MAX - 1L) | |
| 108 | ||
| 109 | /* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */ | |
| 110 | #define ULONG_MAX 18446744073709551615L | |
| 111 | ||
| 112 | #else | |
| 113 | ||
| 28f540f4 | 114 | /* Minimum and maximum values a `signed long int' can hold. */ |
| 28f540f4 | 115 | #define LONG_MAX INT_MAX |
| b20e47cb | 116 | #define LONG_MIN INT_MIN |
| 28f540f4 RM |
117 | |
| 118 | /* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */ | |
| 119 | #define ULONG_MAX UINT_MAX | |
| 120 | ||
| b20e47cb RM |
121 | #endif |
| 122 | ||
| 123 | ||
| 28f540f4 RM |
124 | #endif /* limits.h */ |
| 125 | #endif /* GCC 2. */ |