blob: 7ec4566d0eed995c47d76dd884de4fee9569bf84 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
/* Test wide character for being a hexadecimal digit.
Copyright (C) 2020-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <wctype.h>
int
iswxdigit (wint_t wc)
{
return ((wc >= '0' && wc <= '9')
#if 'A' == 0x41 && 'a' == 0x61
/* Optimization, assuming ASCII */
|| ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F')
#else
|| (wc >= 'A' && wc <= 'F') || (wc >= 'a' && wc <= 'f')
#endif
);
}
|
