stdlib/tst-width-stdint.c

   1 /* Test integer width macros in <stdint.h>.
   2    Copyright (C) 2016-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <signal.h>
  20 #include <stddef.h>
  21 #include <stdint.h>
  22 #include <stdio.h>
  23 #include <wchar.h>
  24
  25 #define CHECK_WIDTH(TYPE, MAX, WIDTH)                                   \
  26   do                                                                    \
  27     {                                                                   \
  28       if ((MAX >> ((TYPE) -1 < 0 ? (WIDTH - 2) : (WIDTH - 1))) != 1)    \
  29         {                                                               \
  30           puts ("bad width of " #TYPE);                                 \
  31           result = 1;                                                   \
  32         }                                                               \
  33       else                                                              \
  34         puts ("width of " #TYPE " OK");                                 \
  35     }                                                                   \
  36   while (0)
  37
  38 static int
  39 do_test (void)
  40 {
  41   int result = 0;
  42
  43 #ifndef INT8_WIDTH
  44 # error "missing INT8_WIDTH"
  45 #endif
  46   CHECK_WIDTH (int8_t, INT8_MAX, INT8_WIDTH);
  47 #ifndef INT16_WIDTH
  48 # error "missing INT16_WIDTH"
  49 #endif
  50   CHECK_WIDTH (int16_t, INT16_MAX, INT16_WIDTH);
  51 #ifndef INT32_WIDTH
  52 # error "missing INT32_WIDTH"
  53 #endif
  54   CHECK_WIDTH (int32_t, INT32_MAX, INT32_WIDTH);
  55 #ifndef INT64_WIDTH
  56 # error "missing INT64_WIDTH"
  57 #endif
  58   CHECK_WIDTH (int64_t, INT64_MAX, INT64_WIDTH);
  59 #ifndef UINT8_WIDTH
  60 # error "missing UINT8_WIDTH"
  61 #endif
  62   CHECK_WIDTH (uint8_t, UINT8_MAX, UINT8_WIDTH);
  63 #ifndef UINT16_WIDTH
  64 # error "missing UINT16_WIDTH"
  65 #endif
  66   CHECK_WIDTH (uint16_t, UINT16_MAX, UINT16_WIDTH);
  67 #ifndef UINT32_WIDTH
  68 # error "missing UINT32_WIDTH"
  69 #endif
  70   CHECK_WIDTH (uint32_t, UINT32_MAX, UINT32_WIDTH);
  71 #ifndef UINT64_WIDTH
  72 # error "missing UINT64_WIDTH"
  73 #endif
  74   CHECK_WIDTH (uint64_t, UINT64_MAX, UINT64_WIDTH);
  75
  76 #ifndef INT_LEAST8_WIDTH
  77 # error "missing INT_LEAST8_WIDTH"
  78 #endif
  79   CHECK_WIDTH (int_least8_t, INT_LEAST8_MAX, INT_LEAST8_WIDTH);
  80 #ifndef INT_LEAST16_WIDTH
  81 # error "missing INT_LEAST16_WIDTH"
  82 #endif
  83   CHECK_WIDTH (int_least16_t, INT_LEAST16_MAX, INT_LEAST16_WIDTH);
  84 #ifndef INT_LEAST32_WIDTH
  85 # error "missing INT_LEAST32_WIDTH"
  86 #endif
  87   CHECK_WIDTH (int_least32_t, INT_LEAST32_MAX, INT_LEAST32_WIDTH);
  88 #ifndef INT_LEAST64_WIDTH
  89 # error "missing INT_LEAST64_WIDTH"
  90 #endif
  91   CHECK_WIDTH (int_least64_t, INT_LEAST64_MAX, INT_LEAST64_WIDTH);
  92 #ifndef UINT_LEAST8_WIDTH
  93 # error "missing UINT_LEAST8_WIDTH"
  94 #endif
  95   CHECK_WIDTH (uint_least8_t, UINT_LEAST8_MAX, UINT_LEAST8_WIDTH);
  96 #ifndef UINT_LEAST16_WIDTH
  97 # error "missing UINT_LEAST16_WIDTH"
  98 #endif
  99   CHECK_WIDTH (uint_least16_t, UINT_LEAST16_MAX, UINT_LEAST16_WIDTH);
 100 #ifndef UINT_LEAST32_WIDTH
 101 # error "missing UINT_LEAST32_WIDTH"
 102 #endif
 103   CHECK_WIDTH (uint_least32_t, UINT_LEAST32_MAX, UINT_LEAST32_WIDTH);
 104 #ifndef UINT_LEAST64_WIDTH
 105 # error "missing UINT_LEAST64_WIDTH"
 106 #endif
 107   CHECK_WIDTH (uint_least64_t, UINT_LEAST64_MAX, UINT_LEAST64_WIDTH);
 108
 109 #ifndef INT_FAST8_WIDTH
 110 # error "missing INT_FAST8_WIDTH"
 111 #endif
 112   CHECK_WIDTH (int_fast8_t, INT_FAST8_MAX, INT_FAST8_WIDTH);
 113 #ifndef INT_FAST16_WIDTH
 114 # error "missing INT_FAST16_WIDTH"
 115 #endif
 116   CHECK_WIDTH (int_fast16_t, INT_FAST16_MAX, INT_FAST16_WIDTH);
 117 #ifndef INT_FAST32_WIDTH
 118 # error "missing INT_FAST32_WIDTH"
 119 #endif
 120   CHECK_WIDTH (int_fast32_t, INT_FAST32_MAX, INT_FAST32_WIDTH);
 121 #ifndef INT_FAST64_WIDTH
 122 # error "missing INT_FAST64_WIDTH"
 123 #endif
 124   CHECK_WIDTH (int_fast64_t, INT_FAST64_MAX, INT_FAST64_WIDTH);
 125 #ifndef UINT_FAST8_WIDTH
 126 # error "missing UINT_FAST8_WIDTH"
 127 #endif
 128   CHECK_WIDTH (uint_fast8_t, UINT_FAST8_MAX, UINT_FAST8_WIDTH);
 129 #ifndef UINT_FAST16_WIDTH
 130 # error "missing UINT_FAST16_WIDTH"
 131 #endif
 132   CHECK_WIDTH (uint_fast16_t, UINT_FAST16_MAX, UINT_FAST16_WIDTH);
 133 #ifndef UINT_FAST32_WIDTH
 134 # error "missing UINT_FAST32_WIDTH"
 135 #endif
 136   CHECK_WIDTH (uint_fast32_t, UINT_FAST32_MAX, UINT_FAST32_WIDTH);
 137 #ifndef UINT_FAST64_WIDTH
 138 # error "missing UINT_FAST64_WIDTH"
 139 #endif
 140   CHECK_WIDTH (uint_fast64_t, UINT_FAST64_MAX, UINT_FAST64_WIDTH);
 141
 142 #ifndef INTPTR_WIDTH
 143 # error "missing INTPTR_WIDTH"
 144 #endif
 145   CHECK_WIDTH (intptr_t, INTPTR_MAX, INTPTR_WIDTH);
 146 #ifndef UINTPTR_WIDTH
 147 # error "missing UINTPTR_WIDTH"
 148 #endif
 149   CHECK_WIDTH (uintptr_t, UINTPTR_MAX, UINTPTR_WIDTH);
 150
 151 #ifndef INTMAX_WIDTH
 152 # error "missing INTMAX_WIDTH"
 153 #endif
 154   CHECK_WIDTH (intmax_t, INTMAX_MAX, INTMAX_WIDTH);
 155 #ifndef UINTMAX_WIDTH
 156 # error "missing UINTMAX_WIDTH"
 157 #endif
 158   CHECK_WIDTH (uintmax_t, UINTMAX_MAX, UINTMAX_WIDTH);
 159
 160 #ifndef PTRDIFF_WIDTH
 161 # error "missing PTRDIFF_WIDTH"
 162 #endif
 163   CHECK_WIDTH (ptrdiff_t, PTRDIFF_MAX, PTRDIFF_WIDTH);
 164 #ifndef SIG_ATOMIC_WIDTH
 165 # error "missing SIG_ATOMIC_WIDTH"
 166 #endif
 167   CHECK_WIDTH (sig_atomic_t, SIG_ATOMIC_MAX, SIG_ATOMIC_WIDTH);
 168 #ifndef SIZE_WIDTH
 169 # error "missing SIZE_WIDTH"
 170 #endif
 171   CHECK_WIDTH (size_t, SIZE_MAX, SIZE_WIDTH);
 172 #ifndef WCHAR_WIDTH
 173 # error "missing WCHAR_WIDTH"
 174 #endif
 175   CHECK_WIDTH (wchar_t, WCHAR_MAX, WCHAR_WIDTH);
 176 #ifndef WINT_WIDTH
 177 # error "missing WINT_WIDTH"
 178 #endif
 179   CHECK_WIDTH (wint_t, WINT_MAX, WINT_WIDTH);
 180
 181   return result;
 182 }
 183
 184 #define TEST_FUNCTION do_test ()
 185 #include "../test-skeleton.c"