gcc/glimits.h

   1 /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
   2
   3 This file is part of GCC.
   4
   5 GCC is free software; you can redistribute it and/or modify it under
   6 the terms of the GNU General Public License as published by the Free
   7 Software Foundation; either version 3, or (at your option) any later
   8 version.
   9
  10 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  11 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13 for more details.
  14
  15 Under Section 7 of GPL version 3, you are granted additional
  16 permissions described in the GCC Runtime Library Exception, version
  17 3.1, as published by the Free Software Foundation.
  18
  19 You should have received a copy of the GNU General Public License and
  20 a copy of the GCC Runtime Library Exception along with this program;
  21 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  22 <http://www.gnu.org/licenses/>.  */
  23
  24 #ifndef _LIMITS_H___
  25 #define _LIMITS_H___
  26
  27 /* Number of bits in a `char'.  */
  28 #undef CHAR_BIT
  29 #define CHAR_BIT __CHAR_BIT__
  30
  31 /* Maximum length of a multibyte character.  */
  32 #ifndef MB_LEN_MAX
  33 #define MB_LEN_MAX 1
  34 #endif
  35
  36 /* Minimum and maximum values a `signed char' can hold.  */
  37 #undef SCHAR_MIN
  38 #define SCHAR_MIN (-SCHAR_MAX - 1)
  39 #undef SCHAR_MAX
  40 #define SCHAR_MAX __SCHAR_MAX__
  41
  42 /* Maximum value an `unsigned char' can hold.  (Minimum is 0).  */
  43 #undef UCHAR_MAX
  44 #if __SCHAR_MAX__ == __INT_MAX__
  45 # define UCHAR_MAX (SCHAR_MAX * 2U + 1U)
  46 #else
  47 # define UCHAR_MAX (SCHAR_MAX * 2 + 1)
  48 #endif
  49
  50 /* Minimum and maximum values a `char' can hold.  */
  51 #ifdef __CHAR_UNSIGNED__
  52 # undef CHAR_MIN
  53 # if __SCHAR_MAX__ == __INT_MAX__
  54 #  define CHAR_MIN 0U
  55 # else
  56 #  define CHAR_MIN 0
  57 # endif
  58 # undef CHAR_MAX
  59 # define CHAR_MAX UCHAR_MAX
  60 #else
  61 # undef CHAR_MIN
  62 # define CHAR_MIN SCHAR_MIN
  63 # undef CHAR_MAX
  64 # define CHAR_MAX SCHAR_MAX
  65 #endif
  66
  67 /* Minimum and maximum values a `signed short int' can hold.  */
  68 #undef SHRT_MIN
  69 #define SHRT_MIN (-SHRT_MAX - 1)
  70 #undef SHRT_MAX
  71 #define SHRT_MAX __SHRT_MAX__
  72
  73 /* Maximum value an `unsigned short int' can hold.  (Minimum is 0).  */
  74 #undef USHRT_MAX
  75 #if __SHRT_MAX__ == __INT_MAX__
  76 # define USHRT_MAX (SHRT_MAX * 2U + 1U)
  77 #else
  78 # define USHRT_MAX (SHRT_MAX * 2 + 1)
  79 #endif
  80
  81 /* Minimum and maximum values a `signed int' can hold.  */
  82 #undef INT_MIN
  83 #define INT_MIN (-INT_MAX - 1)
  84 #undef INT_MAX
  85 #define INT_MAX __INT_MAX__
  86
  87 /* Maximum value an `unsigned int' can hold.  (Minimum is 0).  */
  88 #undef UINT_MAX
  89 #define UINT_MAX (INT_MAX * 2U + 1U)
  90
  91 /* Minimum and maximum values a `signed long int' can hold.
  92    (Same as `int').  */
  93 #undef LONG_MIN
  94 #define LONG_MIN (-LONG_MAX - 1L)
  95 #undef LONG_MAX
  96 #define LONG_MAX __LONG_MAX__
  97
  98 /* Maximum value an `unsigned long int' can hold.  (Minimum is 0).  */
  99 #undef ULONG_MAX
 100 #define ULONG_MAX (LONG_MAX * 2UL + 1UL)
 101
 102 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
 103 /* Minimum and maximum values a `signed long long int' can hold.  */
 104 # undef LLONG_MIN
 105 # define LLONG_MIN (-LLONG_MAX - 1LL)
 106 # undef LLONG_MAX
 107 # define LLONG_MAX __LONG_LONG_MAX__
 108
 109 /* Maximum value an `unsigned long long int' can hold.  (Minimum is 0).  */
 110 # undef ULLONG_MAX
 111 # define ULLONG_MAX (LLONG_MAX * 2ULL + 1ULL)
 112 #endif
 113
 114 #if defined (__GNU_LIBRARY__) ? defined (__USE_GNU) : !defined (__STRICT_ANSI__)
 115 /* Minimum and maximum values a `signed long long int' can hold.  */
 116 # undef LONG_LONG_MIN
 117 # define LONG_LONG_MIN (-LONG_LONG_MAX - 1LL)
 118 # undef LONG_LONG_MAX
 119 # define LONG_LONG_MAX __LONG_LONG_MAX__
 120
 121 /* Maximum value an `unsigned long long int' can hold.  (Minimum is 0).  */
 122 # undef ULONG_LONG_MAX
 123 # define ULONG_LONG_MAX (LONG_LONG_MAX * 2ULL + 1ULL)
 124 #endif
 125
 126 #if (defined __STDC_WANT_IEC_60559_BFP_EXT__ \
 127      || (defined (__STDC_VERSION__) && __STDC_VERSION__ > 201710L))
 128 /* TS 18661-1 / C2X widths of integer types.  */
 129 # undef CHAR_WIDTH
 130 # define CHAR_WIDTH __SCHAR_WIDTH__
 131 # undef SCHAR_WIDTH
 132 # define SCHAR_WIDTH __SCHAR_WIDTH__
 133 # undef UCHAR_WIDTH
 134 # define UCHAR_WIDTH __SCHAR_WIDTH__
 135 # undef SHRT_WIDTH
 136 # define SHRT_WIDTH __SHRT_WIDTH__
 137 # undef USHRT_WIDTH
 138 # define USHRT_WIDTH __SHRT_WIDTH__
 139 # undef INT_WIDTH
 140 # define INT_WIDTH __INT_WIDTH__
 141 # undef UINT_WIDTH
 142 # define UINT_WIDTH __INT_WIDTH__
 143 # undef LONG_WIDTH
 144 # define LONG_WIDTH __LONG_WIDTH__
 145 # undef ULONG_WIDTH
 146 # define ULONG_WIDTH __LONG_WIDTH__
 147 # undef LLONG_WIDTH
 148 # define LLONG_WIDTH __LONG_LONG_WIDTH__
 149 # undef ULLONG_WIDTH
 150 # define ULLONG_WIDTH __LONG_LONG_WIDTH__
 151 #endif
 152
 153 #if defined (__STDC_VERSION__) && __STDC_VERSION__ > 201710L
 154 /* C2X width and limit of _Bool.  */
 155 # undef BOOL_MAX
 156 # define BOOL_MAX 1
 157 # undef BOOL_WIDTH
 158 # define BOOL_WIDTH 1
 159
 160 # ifdef __BITINT_MAXWIDTH__
 161 #  undef BITINT_MAXWIDTH
 162 #  define BITINT_MAXWIDTH __BITINT_MAXWIDTH__
 163 # endif
 164
 165 # define __STDC_VERSION_LIMITS_H__      202311L
 166 #endif
 167
 168 #endif /* _LIMITS_H___ */