| 1 | /* Copyright (C) 1991-2016 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <http://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | /* |
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| 19 | * ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types <limits.h> |
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| 20 | */ |
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| 21 | |
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| 22 | #ifndef _LIBC_LIMITS_H_ |
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| 23 | #define _LIBC_LIMITS_H_ 1 |
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| 24 | |
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| 25 | #include <features.h> |
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| 26 | |
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| 27 | |
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| 28 | /* Maximum length of any multibyte character in any locale. |
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| 29 | We define this value here since the gcc header does not define |
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| 30 | the correct value. */ |
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| 31 | #define MB_LEN_MAX 16 |
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| 32 | |
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| 33 | |
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| 34 | /* If we are not using GNU CC we have to define all the symbols ourself. |
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| 35 | Otherwise use gcc's definitions (see below). */ |
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| 36 | #if !defined __GNUC__ || __GNUC__ < 2 |
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| 37 | |
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| 38 | /* We only protect from multiple inclusion here, because all the other |
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| 39 | #include's protect themselves, and in GCC 2 we may #include_next through |
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| 40 | multiple copies of this file before we get to GCC's. */ |
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| 41 | # ifndef _LIMITS_H |
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| 42 | # define _LIMITS_H 1 |
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| 43 | |
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| 44 | #include <bits/wordsize.h> |
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| 45 | |
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| 46 | /* We don't have #include_next. |
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| 47 | Define ANSI <limits.h> for standard 32-bit words. */ |
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| 48 | |
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| 49 | /* These assume 8-bit `char's, 16-bit `short int's, |
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| 50 | and 32-bit `int's and `long int's. */ |
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| 51 | |
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| 52 | /* Number of bits in a `char'. */ |
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| 53 | # define CHAR_BIT 8 |
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| 54 | |
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| 55 | /* Minimum and maximum values a `signed char' can hold. */ |
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| 56 | # define SCHAR_MIN (-128) |
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| 57 | # define SCHAR_MAX 127 |
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| 58 | |
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| 59 | /* Maximum value an `unsigned char' can hold. (Minimum is 0.) */ |
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| 60 | # define UCHAR_MAX 255 |
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| 61 | |
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| 62 | /* Minimum and maximum values a `char' can hold. */ |
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| 63 | # ifdef __CHAR_UNSIGNED__ |
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| 64 | # define CHAR_MIN 0 |
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| 65 | # define CHAR_MAX UCHAR_MAX |
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| 66 | # else |
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| 67 | # define CHAR_MIN SCHAR_MIN |
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| 68 | # define CHAR_MAX SCHAR_MAX |
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| 69 | # endif |
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| 70 | |
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| 71 | /* Minimum and maximum values a `signed short int' can hold. */ |
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| 72 | # define SHRT_MIN (-32768) |
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| 73 | # define SHRT_MAX 32767 |
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| 74 | |
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| 75 | /* Maximum value an `unsigned short int' can hold. (Minimum is 0.) */ |
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| 76 | # define USHRT_MAX 65535 |
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| 77 | |
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| 78 | /* Minimum and maximum values a `signed int' can hold. */ |
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| 79 | # define INT_MIN (-INT_MAX - 1) |
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| 80 | # define INT_MAX 2147483647 |
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| 81 | |
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| 82 | /* Maximum value an `unsigned int' can hold. (Minimum is 0.) */ |
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| 83 | # define UINT_MAX 4294967295U |
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| 84 | |
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| 85 | /* Minimum and maximum values a `signed long int' can hold. */ |
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| 86 | # if __WORDSIZE == 64 |
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| 87 | # define LONG_MAX 9223372036854775807L |
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| 88 | # else |
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| 89 | # define LONG_MAX 2147483647L |
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| 90 | # endif |
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| 91 | # define LONG_MIN (-LONG_MAX - 1L) |
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| 92 | |
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| 93 | /* Maximum value an `unsigned long int' can hold. (Minimum is 0.) */ |
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| 94 | # if __WORDSIZE == 64 |
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| 95 | # define ULONG_MAX 18446744073709551615UL |
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| 96 | # else |
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| 97 | # define ULONG_MAX 4294967295UL |
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| 98 | # endif |
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| 99 | |
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| 100 | # ifdef __USE_ISOC99 |
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| 101 | |
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| 102 | /* Minimum and maximum values a `signed long long int' can hold. */ |
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| 103 | # define LLONG_MAX 9223372036854775807LL |
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| 104 | # define LLONG_MIN (-LLONG_MAX - 1LL) |
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| 105 | |
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| 106 | /* Maximum value an `unsigned long long int' can hold. (Minimum is 0.) */ |
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| 107 | # define ULLONG_MAX 18446744073709551615ULL |
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| 108 | |
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| 109 | # endif /* ISO C99 */ |
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| 110 | |
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| 111 | # endif /* limits.h */ |
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| 112 | #endif /* GCC 2. */ |
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| 113 | |
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| 114 | #endif /* !_LIBC_LIMITS_H_ */ |
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| 115 | |
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| 116 | /* Get the compiler's limits.h, which defines almost all the ISO constants. |
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| 117 | |
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| 118 | We put this #include_next outside the double inclusion check because |
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| 119 | it should be possible to include this file more than once and still get |
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| 120 | the definitions from gcc's header. */ |
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| 121 | #if defined __GNUC__ && !defined _GCC_LIMITS_H_ |
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| 122 | /* `_GCC_LIMITS_H_' is what GCC's file defines. */ |
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| 123 | # include_next <limits.h> |
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| 124 | #endif |
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| 125 | |
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| 126 | /* The <limits.h> files in some gcc versions don't define LLONG_MIN, |
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| 127 | LLONG_MAX, and ULLONG_MAX. Instead only the values gcc defined for |
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| 128 | ages are available. */ |
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| 129 | #if defined __USE_ISOC99 && defined __GNUC__ |
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| 130 | # ifndef LLONG_MIN |
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| 131 | # define LLONG_MIN (-LLONG_MAX-1) |
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| 132 | # endif |
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| 133 | # ifndef LLONG_MAX |
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| 134 | # define LLONG_MAX __LONG_LONG_MAX__ |
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| 135 | # endif |
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| 136 | # ifndef ULLONG_MAX |
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| 137 | # define ULLONG_MAX (LLONG_MAX * 2ULL + 1) |
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| 138 | # endif |
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| 139 | #endif |
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| 140 | |
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| 141 | #ifdef __USE_POSIX |
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| 142 | /* POSIX adds things to <limits.h>. */ |
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| 143 | # include <bits/posix1_lim.h> |
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| 144 | #endif |
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| 145 | |
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| 146 | #ifdef __USE_POSIX2 |
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| 147 | # include <bits/posix2_lim.h> |
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| 148 | #endif |
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| 149 | |
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| 150 | #ifdef __USE_XOPEN |
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| 151 | # include <bits/xopen_lim.h> |
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| 152 | #endif |
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| 153 | |
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