projects / thirdparty / bash.git / blame
| Commit | Line | Data |
|---|---|---|
| f73dda09 JA |
1 | /* typemax.h -- encapsulate max values for long, long long, etc. */ |
| 2 | ||
| 3 | /* Copyright (C) 2001 Free Software Foundation, Inc. | |
| 4 | ||
| 5 | This file is part of GNU Bash, the Bourne Again SHell. | |
| 6 | ||
| 3185942a JA |
7 | Bash is free software: you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation, either version 3 of the License, or | |
| 10 | (at your option) any later version. | |
| f73dda09 | 11 | |
| 3185942a JA |
12 | Bash is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| f73dda09 | 16 | |
| 3185942a JA |
17 | You should have received a copy of the GNU General Public License |
| 18 | along with Bash. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | */ | |
| f73dda09 JA |
20 | |
| 21 | /* | |
| 22 | * NOTE: This should be included after config.h, limits.h, stdint.h, and | |
| 23 | * inttypes.h | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef _SH_TYPEMAX_H | |
| 27 | #define _SH_TYPEMAX_H | |
| 28 | ||
| 29 | #ifndef CHAR_BIT | |
| 30 | # define CHAR_BIT 8 | |
| 31 | #endif | |
| 32 | ||
| 33 | /* Nonzero if the integer type T is signed. */ | |
| 34 | #ifndef TYPE_SIGNED | |
| 35 | # define TYPE_SIGNED(t) (! ((t) 0 < (t) -1)) | |
| 36 | #endif | |
| 37 | ||
| 38 | #ifndef TYPE_MINIMUM | |
| 39 | # define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \ | |
| 40 | ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \ | |
| 41 | : (t) 0)) | |
| 42 | #endif | |
| 43 | ||
| 44 | #ifndef TYPE_MAXIMUM | |
| 45 | # define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t))) | |
| 46 | #endif | |
| 47 | ||
| 48 | #ifdef HAVE_LONG_LONG | |
| 49 | # ifndef LLONG_MAX | |
| 50 | # define LLONG_MAX TYPE_MAXIMUM(long long int) | |
| 51 | # define LLONG_MIN TYPE_MINIMUM(long long int) | |
| 52 | # endif | |
| 53 | # ifndef ULLONG_MAX | |
| 54 | # define ULLONG_MAX TYPE_MAXIMUM(unsigned long long int) | |
| 55 | # endif | |
| 56 | #endif | |
| 57 | ||
| 58 | #ifndef ULONG_MAX | |
| 59 | # define ULONG_MAX ((unsigned long) ~(unsigned long) 0) | |
| 60 | #endif | |
| 61 | ||
| 62 | #ifndef LONG_MAX | |
| 63 | # define LONG_MAX ((long int) (ULONG_MAX >> 1)) | |
| 64 | # define LONG_MIN ((long int) (-LONG_MAX - 1L)) | |
| 65 | #endif | |
| 66 | ||
| 67 | #ifndef INT_MAX /* ouch */ | |
| 68 | # define INT_MAX TYPE_MAXIMUM(int) | |
| 69 | # define INT_MIN TYPE_MINIMUM(int) | |
| 70 | # define UINT_MAX ((unsigned int) ~(unsigned int)0) | |
| 71 | #endif | |
| 72 | ||
| 73 | /* workaround for gcc bug in versions < 2.7 */ | |
| 74 | #if defined (HAVE_LONG_LONG) && __GNUC__ == 2 && __GNUC_MINOR__ < 7 | |
| 75 | static const unsigned long long int maxquad = ULLONG_MAX; | |
| 76 | # undef ULLONG_MAX | |
| 77 | # define ULLONG_MAX maxquad | |
| 78 | #endif | |
| 79 | ||
| 495aee44 CR |
80 | #if !defined (INTMAX_MAX) || !defined (INTMAX_MIN) |
| 81 | ||
| 82 | #if SIZEOF_INTMAX_T == SIZEOF_LONG_LONG | |
| 83 | # define INTMAX_MAX LLONG_MAX | |
| 84 | # define INTMAX_MIN LLONG_MIN | |
| 85 | #elif SIZEOF_INTMAX_T == SIZEOF_LONG | |
| 86 | # define INTMAX_MAX LONG_MAX | |
| 87 | # define INTMAX_MIN LONG_MIN | |
| 88 | #else | |
| 89 | # define INTMAX_MAX INT_MAX | |
| 90 | # define INTMAX_MIN INT_MIN | |
| 91 | #endif | |
| 92 | ||
| 93 | #endif | |
| 94 | ||
| 3185942a JA |
95 | #ifndef SSIZE_MAX |
| 96 | # define SSIZE_MAX 32767 /* POSIX minimum max */ | |
| 97 | #endif | |
| 98 | ||
| ac50fbac CR |
99 | #ifndef SIZE_MAX |
| 100 | # define SIZE_MAX 65535 /* POSIX minimum max */ | |
| 101 | #endif | |
| 102 | ||
| f73dda09 | 103 | #endif /* _SH_TYPEMAX_H */ |