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/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.
The GNU C Library 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.
The GNU C Library 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 the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <wchar.h>
#ifdef WMEMCMP
# define __wmemcmp WMEMCMP
#endif
int
__wmemcmp (const wchar_t *s1, const wchar_t *s2, size_t n)
{
wchar_t c1;
wchar_t c2;
while (n >= 4)
{
c1 = s1[0];
c2 = s2[0];
if (c1 - c2 != 0)
return c1 > c2 ? 1 : -1;
c1 = s1[1];
c2 = s2[1];
if (c1 - c2 != 0)
return c1 > c2 ? 1 : -1;
c1 = s1[2];
c2 = s2[2];
if (c1 - c2 != 0)
return c1 > c2 ? 1 : -1;
c1 = s1[3];
c2 = s2[3];
if (c1 - c2 != 0)
return c1 > c2 ? 1 : -1;
s1 += 4;
s2 += 4;
n -= 4;
}
if (n > 0)
{
c1 = s1[0];
c2 = s2[0];
if (c1 - c2 != 0)
return c1 > c2 ? 1 : -1;
++s1;
++s2;
--n;
}
if (n > 0)
{
c1 = s1[0];
c2 = s2[0];
if (c1 - c2 != 0)
return c1 > c2 ? 1 : -1;
++s1;
++s2;
--n;
}
if (n > 0)
{
c1 = s1[0];
c2 = s2[0];
if (c1 - c2 != 0)
return c1 > c2 ? 1 : -1;
}
return 0;
}
#ifndef WMEMCMP
weak_alias (__wmemcmp, wmemcmp)
#endif
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