| /* Test of isblank() function. |
| Copyright (C) 2009-2020 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| /* Written by Bruno Haible <bruno@clisp.org>, 2009. */ |
| |
| #include <config.h> |
| |
| #include <ctype.h> |
| |
| #include "signature.h" |
| SIGNATURE_CHECK (isblank, int, (int)); |
| |
| #include <limits.h> |
| #include <stdio.h> |
| |
| #include "macros.h" |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| unsigned int c; |
| |
| /* Verify the property in the "C" locale. |
| POSIX specifies in |
| <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap07.html> |
| that |
| - in all locales, the blank characters include the <space> and <tab> |
| characters, |
| - in the "POSIX" locale (which is usually the same as the "C" locale), |
| the blank characters include only the ASCII <space> and <tab> |
| characters. */ |
| for (c = 0; c <= UCHAR_MAX; c++) |
| ASSERT (!isblank (c) == !(c == ' ' || c == '\t')); |
| ASSERT (!isblank (EOF)); |
| |
| return 0; |
| } |