maint/gnulib/tests/test-isblank.c

/* */
This source file includes following definitions.
main
   1 /* Test of isblank() function.
   2    Copyright (C) 2009-2021 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>, 2009.  */
  18 
  19 #include <config.h>
  20 
  21 #include <ctype.h>
  22 
  23 #include "signature.h"
  24 SIGNATURE_CHECK (isblank, int, (int));
  25 
  26 #include <limits.h>
  27 #include <stdio.h>
  28 
  29 #include "macros.h"
  30 
  31 int
  32 main (int argc, char *argv[])
     /*  */
  33 {
  34   unsigned int c;
  35 
  36   /* Verify the property in the "C" locale.
  37      POSIX specifies in
  38        <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html>
  39      that
  40        - in all locales, the blank characters include the <space> and <tab>
  41          characters,
  42        - in the "POSIX" locale (which is usually the same as the "C" locale),
  43          the blank characters include only the ASCII <space> and <tab>
  44          characters.  */
  45   for (c = 0; c <= UCHAR_MAX; c++)
  46     ASSERT (!isblank (c) == !(c == ' ' || c == '\t'));
  47   ASSERT (!isblank (EOF));
  48 
  49   return 0;
  50 }
/* */
root/maint/gnulib/tests/test-isblank.c

DEFINITIONS
