strcasecmp.c revision 84221
138032Speter/* 238032Speter * Copyright (c) 1987, 1993 364565Sgshapiro * The Regents of the University of California. All rights reserved. 464565Sgshapiro * 538032Speter * Redistribution and use in source and binary forms, with or without 638032Speter * modification, are permitted provided that the following conditions 738032Speter * are met: 838032Speter * 1. Redistributions of source code must retain the above copyright 938032Speter * notice, this list of conditions and the following disclaimer. 1038032Speter * 2. Redistributions in binary form must reproduce the above copyright 1138032Speter * notice, this list of conditions and the following disclaimer in the 1238032Speter * documentation and/or other materials provided with the distribution. 1338032Speter * 3. All advertising materials mentioning features or use of this software 1464565Sgshapiro * must display the following acknowledgement: 1538032Speter * This product includes software developed by the University of 1664565Sgshapiro * California, Berkeley and its contributors. 1764565Sgshapiro * 4. Neither the name of the University nor the names of its contributors 1838032Speter * may be used to endorse or promote products derived from this software 1938032Speter * without specific prior written permission. 2038032Speter * 2138032Speter * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2238032Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2338032Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2438032Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2538032Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2638032Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2738032Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2838032Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2938032Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3038032Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3138032Speter * SUCH DAMAGE. 3238032Speter */ 3338032Speter 3438032Speter#include <sys/cdefs.h> 3538032Speter__FBSDID("$FreeBSD: head/lib/libstand/strcasecmp.c 84221 2001-09-30 22:28:01Z dillon $"); 3638032Speter 3738032Speter#include <sys/cdefs.h> 3838032Speter#include <string.h> 3938032Speter#include "stand.h" 4038032Speter 4138032Speter#if defined(LIBC_SCCS) && !defined(lint) 4238032Speterstatic char sccsid[] = "@(#)strcasecmp.c 8.1 (Berkeley) 6/4/93"; 4338032Speter#endif /* LIBC_SCCS and not lint */ 4438032Speter 4538032Speterint 4638032Speterstrcasecmp(s1, s2) 4738032Speter const char *s1, *s2; 4838032Speter{ 4938032Speter register const u_char 5038032Speter *us1 = (const u_char *)s1, 5138032Speter *us2 = (const u_char *)s2; 5238032Speter 5338032Speter while (tolower(*us1) == tolower(*us2++)) 5438032Speter if (*us1++ == '\0') 5538032Speter return (0); 5638032Speter return (tolower(*us1) - tolower(*--us2)); 5738075Speter} 5838032Speter 5938032Speterint 6038032Speterstrncasecmp(s1, s2, n) 61 const char *s1, *s2; 62 register size_t n; 63{ 64 if (n != 0) { 65 register const u_char 66 *us1 = (const u_char *)s1, 67 *us2 = (const u_char *)s2; 68 69 do { 70 if (tolower(*us1) != tolower(*us2++)) 71 return (tolower(*us1) - tolower(*--us2)); 72 if (*us1++ == '\0') 73 break; 74 } while (--n != 0); 75 } 76 return (0); 77} 78