tests/test-stdbit-h.c

   1 /* Test of <stdbit.h> substitute.
   2    Copyright (C) 2024-2025 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2024.  */
  18
  19 #include <config.h>
  20
  21 #include <stdbit.h>
  22
  23 /* Check that __STDC_ENDIAN_BIG__ and __STDC_ENDIAN_LITTLE__ are defined.  */
  24 int a[2] = { __STDC_ENDIAN_BIG__, __STDC_ENDIAN_LITTLE__ };
  25
  26 /* Check that __STDC_ENDIAN_NATIVE__ is defined.  */
  27 int b = __STDC_ENDIAN_NATIVE__;
  28
  29 /* Check that __STDC_ENDIAN_NATIVE__ is either __STDC_ENDIAN_BIG__ or
  30    __STDC_ENDIAN_LITTLE__.  */
  31 #if !(__STDC_ENDIAN_NATIVE__ == __STDC_ENDIAN_BIG__ \
  32       || __STDC_ENDIAN_NATIVE__ == __STDC_ENDIAN_LITTLE__)
  33 # error "unknown endianness"
  34 #endif
  35
  36 int
  37 main (void)
  38 {
  39   return 0;
  40 }