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/* Compare two wide strings ignoring case.
Copyright (C) 1999, 2011-2019 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2011.
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/>. */
int
wcscasecmp (const wchar_t *s1, const wchar_t *s2)
{
for (;;)
{
wchar_t wc1 = towlower (*s1++);
wchar_t wc2 = towlower (*s2++);
if (wc1 != (wchar_t)'\0' && wc1 == wc2)
continue;
/* Note that wc1 and wc2 each have at most 31 bits. */
return (int)wc1 - (int)wc2;
/* > 0 if wc1 > wc2, < 0 if wc1 < wc2,
= 0 if wc1 and wc2 are both '\0'. */
}
}
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