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/* Compare two wide strings ignoring case.
Copyright (C) 1999, 2011-2026 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2011.
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 3 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/>. */
int
wcsncasecmp (const wchar_t *s1, const wchar_t *s2, size_t n)
{
for (; n > 0;)
{
wchar_t wc1 = towlower (*s1++);
wchar_t wc2 = towlower (*s2++);
if (wc1 == (wchar_t)'\0' || wc1 != wc2)
/* 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'. */
n--;
}
return 0;
}
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