| /* Test wide character for being a hexadecimal digit. |
| Copyright (C) 2020-2021 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, 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/>. */ |
| |
| #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 |
| ); |
| } |