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/* Compare UTF-32 strings.
Copyright (C) 1999, 2002, 2006, 2009-2021 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2002.
This program 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 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
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 "unistr.h"
int
u32_strncmp (const uint32_t *s1, const uint32_t *s2, size_t n)
{
for (; n > 0;)
{
uint32_t uc1 = *s1++;
uint32_t uc2 = *s2++;
if (uc1 != 0 && uc1 == uc2)
{
n--;
continue;
}
/* Note that uc1 and uc2 each have at most 31 bits. */
return (int)uc1 - (int)uc2;
/* > 0 if uc1 > uc2, < 0 if uc1 < uc2, = 0 if uc1 and uc2 are both 0. */
}
return 0;
}
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