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/* Copyright (C) 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <wchar.h>
int
wmemcmp (s1, s2, n)
const wchar_t *s1;
const wchar_t *s2;
size_t n;
{
register uwchar_t c1;
register uwchar_t c2;
while (n >= 4)
{
c1 = (uwchar_t) s1[0];
c2 = (uwchar_t) s2[0];
if (c1 - c2 != 0)
return c1 - c2;
c1 = (uwchar_t) s1[1];
c2 = (uwchar_t) s2[1];
if (c1 - c2 != 0)
return c1 - c2;
c1 = (uwchar_t) s1[2];
c2 = (uwchar_t) s2[2];
if (c1 - c2 != 0)
return c1 - c2;
c1 = (uwchar_t) s1[3];
c2 = (uwchar_t) s2[3];
if (c1 - c2 != 0)
return c1 - c2;
s1 += 4;
s2 += 4;
n -= 4;
}
if (n > 0)
{
c1 = (uwchar_t) s1[0];
c2 = (uwchar_t) s2[0];
if (c1 - c2 != 0)
return c1 - c2;
++s1;
++s2;
--n;
}
if (n > 0)
{
c1 = (uwchar_t) s1[0];
c2 = (uwchar_t) s2[0];
if (c1 - c2 != 0)
return c1 - c2;
++s1;
++s2;
--n;
}
if (n > 0)
{
c1 = (uwchar_t) s1[0];
c2 = (uwchar_t) s2[0];
if (c1 - c2 != 0)
return c1 - c2;
}
return 0;
}
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