kolibrios/programs/develop/open watcom/trunk/clib/memory/memicmp.c

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/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
* DESCRIBE IT HERE!
*
****************************************************************************/
#include "variety.h"
#include <string.h>
#include <ctype.h>
_WCRTLINK int memicmp( const void *in_s1, const void *in_s2, size_t len )
{
const unsigned char * s1 = (const unsigned char *)in_s1;
const unsigned char * s2 = (const unsigned char *)in_s2;
unsigned char c1;
unsigned char c2;
for( ; len; --len ) {
c1 = *s1;
c2 = *s2;
if( c1 >= 'A' && c1 <= 'Z' ) c1 += 'a' - 'A';
if( c2 >= 'A' && c2 <= 'Z' ) c2 += 'a' - 'A';
if( c1 != c2 ) return( c1 - c2 );
++s1;
++s2;
}
return( 0 ); /* both operands are equal */
}