1/* $Id: strcasecmp.c 276 2010-06-30 12:18:30Z nijtmans $ */ 2 3/* 4 * Copyright (c) 1987, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#if 0 33static char sccsid[] = "@(#)strcasecmp.c 8.1 (Berkeley) 6/4/93"; 34__RCSID("$NetBSD: strcasecmp.c,v 1.16 2003/08/07 16:43:49 agc Exp $"); 35#endif 36 37#include <ctype.h> 38#include <string.h> 39 40int 41strcasecmp(const char *s1, const char *s2) 42{ 43 const unsigned char *us1 = (const unsigned char *)s1, 44 *us2 = (const unsigned char *)s2; 45 46 while (tolower(*us1) == tolower(*us2++)) 47 if (*us1++ == '\0') 48 return (0); 49 return (tolower(*us1) - tolower(*--us2)); 50} 51/* 52 * Local Variables: 53 * mode: c 54 * c-basic-offset: 8 55 * fill-column: 78 56 * End: 57 */ 58