From be8efac78d067c138ad8dda03df4336e73f94887 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Sat, 8 Jan 2022 11:51:07 +0100 Subject: New upstream version 1.0 --- lib/iswxdigit.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 lib/iswxdigit.c (limited to 'lib/iswxdigit.c') diff --git a/lib/iswxdigit.c b/lib/iswxdigit.c new file mode 100644 index 0000000..f20b9b3 --- /dev/null +++ b/lib/iswxdigit.c @@ -0,0 +1,33 @@ +/* Test wide character for being a hexadecimal digit. + Copyright (C) 2020-2022 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 . */ + +#include + +/* Specification. */ +#include + +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 + ); +} -- cgit v1.2.3