1 /* Test of isblank() function.
2 Copyright (C) 2009 Free Software Foundation, Inc.
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.
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.
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/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2009. */
27 #define ASSERT(expr) \
32 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
40 main (int argc, char *argv[])
44 /* Verify the property in the "C" locale.
46 <http://www.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html>
48 - in all locales, the blank characters include the <space> and <tab>
50 - in the "POSIX" locale (which is usually the same as the "C" locale),
51 the blank characters include only the ASCII <space> and <tab>
53 for (c = 0; c <= UCHAR_MAX; c++)
54 ASSERT (!isblank (c) == !(c == ' ' || c == '\t'));
55 ASSERT (!isblank (EOF));