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/*        $NetBSD: strcasecmp.c,v 1.16 2003/08/07 16:43:49 agc Exp $        */
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/*
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 * Copyright (c) 1987, 1993
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 *        The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/cdefs.h>
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#include <ctype.h>
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#include <string.h>
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int
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strcasecmp(s1, s2)
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        const char *s1, *s2;
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{
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        const unsigned char *us1 = (const unsigned char *)s1,
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                        *us2 = (const unsigned char *)s2;
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        while (tolower(*us1) == tolower(*us2++))
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                if (*us1++ == '\0')
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                        return (0);
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        return (tolower(*us1) - tolower(*--us2));
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}
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int
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strncasecmp(s1, s2, n)
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        const char *s1, *s2;
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        size_t n;
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{
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        if (s1 == NULL || s2 == NULL)
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                return (0);
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        if (n != 0) {
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                const unsigned char *us1 = (const unsigned char *)s1,
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                                *us2 = (const unsigned char *)s2;
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                do {
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                        if (tolower(*us1) != tolower(*us2++))
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                                return (tolower(*us1) - tolower(*--us2));
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                        if (*us1++ == '\0')
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                                break;
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                } while (--n != 0);
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        }
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        return (0);
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}