tests/test-limits-h.c

   1 /* Test of <limits.h> substitute.
   2    Copyright 2016-2017 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 <http://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Paul Eggert.  */
  18
  19 #include <config.h>
  20
  21 #include <limits.h>
  22
  23 #include "verify.h"
  24
  25 #if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
  26 # pragma GCC diagnostic ignored "-Woverlength-strings"
  27 #endif
  28
  29 /* Macros specified by ISO/IEC TS 18661-1:2014.  */
  30
  31 #define verify_width(width, min, max) \
  32   verify ((max) >> ((width) - 1 - ((min) < 0)) == 1)
  33
  34 verify_width (CHAR_WIDTH, CHAR_MIN, CHAR_MAX);
  35 verify_width (SCHAR_WIDTH, SCHAR_MIN, SCHAR_MAX);
  36 verify_width (UCHAR_WIDTH, 0, UCHAR_MAX);
  37 verify_width (SHRT_WIDTH, SHRT_MIN, SHRT_MAX);
  38 verify_width (USHRT_WIDTH, 0, USHRT_MAX);
  39 verify_width (INT_WIDTH, INT_MIN, INT_MAX);
  40 verify_width (UINT_WIDTH, 0, UINT_MAX);
  41 verify_width (LONG_WIDTH, LONG_MIN, LONG_MAX);
  42 verify_width (ULONG_WIDTH, 0, ULONG_MAX);
  43 verify_width (LLONG_WIDTH, LLONG_MIN, LLONG_MAX);
  44 verify_width (ULLONG_WIDTH, 0, ULLONG_MAX);
  45
  46 int
  47 main (void)
  48 {
  49   return 0;
  50 }