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/* memcmp -- compare two memory regions.
Copyright (C) 1991 Free Software Foundation, Inc.
This file is part of the libiberty library.
Libiberty 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.
Libiberty 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 libiberty; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
/*
NAME
memcmp -- compare two memory regions
SYNOPSIS
int memcmp (const void *from, const void *to, size_t count)
DESCRIPTION
Compare two memory regions and return less than,
equal to, or greater than zero, according to lexicographical
ordering of the compared regions.
*/
#include <ansidecl.h>
#ifdef __STDC__
#include <stddef.h>
#else
#define size_t unsigned long
#endif
int
DEFUN(memcmp, (str1, str2, count),
PTRCONST str1 AND PTRCONST str2 AND size_t count)
{
register unsigned char *s1 = (unsigned char*)str1;
register unsigned char *s2 = (unsigned char*)str2;
while (count-- > 0)
{
if (*s1++ != *s2++)
return s1[-1] < s2[-1] ? -1 : 1;
}
return 0;
}
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