1 /* Copyright (C) 1991, 92, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. 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 Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the 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 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. */ 18 19 /* 20 * ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types <limits.h> 21 */ 22 23 #ifndef _LIBC_LIMITS_H_ 24 #define _LIBC_LIMITS_H_ 1 25 26 #include <features.h> 27 28 29 /* Maximum length of any multibyte character in any locale. 30 We define this value here since the gcc header does not define 31 the correct value. */ 32 #define MB_LEN_MAX 16 33 34 35 /* If we are not using GNU CC we have to define all the symbols ourself. 36 Otherwise use gcc's definitions (see below). */ 37 #if !defined __GNUC__ || __GNUC__ < 2 38 39 /* We only protect from multiple inclusion here, because all the other 40 #include's protect themselves, and in GCC 2 we may #include_next through 41 multiple copies of this file before we get to GCC's. */ 42 # ifndef _LIMITS_H 43 # define _LIMITS_H 1 44 45 #include <bits/wordsize.h> 46 47 /* We don't have #include_next. 48 Define ANSI <limits.h> for standard 32-bit words. */ 49 50 /* These assume 8-bit `char's, 16-bit `short int's, 51 and 32-bit `int's and `long int's. */ 52 53 /* Number of bits in a `char'. */ 54 # define CHAR_BIT 8 55 56 /* Minimum and maximum values a `signed char' can hold. */ 57 # define SCHAR_MIN (-128) 58 # define SCHAR_MAX 127 59 60 /* Maximum value an `unsigned char' can hold. (Minimum is 0.) */ 61 # define UCHAR_MAX 255 62 63 /* Minimum and maximum values a `char' can hold. */ 64 # ifdef __CHAR_UNSIGNED__ 65 # define CHAR_MIN 0 66 # define CHAR_MAX UCHAR_MAX 67 # else 68 # define CHAR_MIN SCHAR_MIN 69 # define CHAR_MAX SCHAR_MAX 70 # endif 71 72 /* Minimum and maximum values a `signed short int' can hold. */ 73 # define SHRT_MIN (-32768) 74 # define SHRT_MAX 32767 75 76 /* Maximum value an `unsigned short int' can hold. (Minimum is 0.) */ 77 # define USHRT_MAX 65535 78 79 /* Minimum and maximum values a `signed int' can hold. */ 80 # define INT_MIN (-INT_MAX - 1) 81 # define INT_MAX 2147483647 82 83 /* Maximum value an `unsigned int' can hold. (Minimum is 0.) */ 84 # define UINT_MAX 4294967295U 85 86 /* Minimum and maximum values a `signed long int' can hold. */ 87 # if __WORDSIZE == 64 88 # define LONG_MAX 9223372036854775807L 89 # else 90 # define LONG_MAX 2147483647L 91 # endif 92 # define LONG_MIN (-LONG_MAX - 1L) 93 94 /* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */ 95 # if __WORDSIZE == 64 96 # define ULONG_MAX 18446744073709551615UL 97 # else 98 # define ULONG_MAX 4294967295UL 99 # endif 100 101 # ifdef __USE_ISOC99 102 103 /* Minimum and maximum values a `signed long long int' can hold. */ 104 # define LLONG_MAX 9223372036854775807LL 105 # define LLONG_MIN (-LLONG_MAX - 1LL) 106 107 /* Maximum value an `unsigned long long int' can hold. (Minimum is 0.) */ 108 # define ULLONG_MAX 18446744073709551615ULL 109 110 # endif /* ISO C99 */ 111 112 # endif /* limits.h */ 113 #endif /* GCC 2. */ 114 115 #endif /* !_LIBC_LIMITS_H_ */ 116 117 /* Get the compiler's limits.h, which defines almost all the ISO constants. 118 119 We put this #include_next outside the double inclusion check because 120 it should be possible to include this file more than once and still get 121 the definitions from gcc's header. */ 122 #if defined __GNUC__ && !defined _GCC_LIMITS_H_ 123 /* `_GCC_LIMITS_H_' is what GCC's file defines. */ 124 # include_next <limits.h> 125 126 /* The <limits.h> files in some gcc versions don't define LLONG_MIN, 127 LLONG_MAX, and ULLONG_MAX. Instead only the values gcc defined for 128 ages are available. */ 129 # ifdef __USE_ISOC99 130 # ifndef LLONG_MIN 131 # define LLONG_MIN LONG_LONG_MIN 132 # endif 133 # ifndef LLONG_MAX 134 # define LLONG_MAX LONG_LONG_MAX 135 # endif 136 # ifndef ULLONG_MAX 137 # define ULLONG_MAX ULONG_LONG_MAX 138 # endif 139 # endif 140 #endif 141 142 #ifdef __USE_POSIX 143 /* POSIX adds things to <limits.h>. */ 144 # include <bits/posix1_lim.h> 145 #endif 146 147 #ifdef __USE_POSIX2 148 # include <bits/posix2_lim.h> 149 #endif 150 151 #ifdef __USE_XOPEN 152 # include <bits/xopen_lim.h> 153 #endif 154