text: /*-
   * Copyright (c) 1987, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #include <sys/cdefs.h>
  __FBSDID("$FreeBSD: soc2013/dpl/head/sys/libkern/strcasecmp.c 206403 2010-04-07 16:29:10Z joel $");
  
  #include <sys/param.h>
  #include <sys/ctype.h>
  #include <sys/libkern.h>
  
  int
  strcasecmp(const char *s1, const char *s2)
  {
  	const u_char *us1 = (const u_char *)s1, *us2 = (const u_char *)s2;
  
  	while (tolower(*us1) == tolower(*us2)) {
  		if (*us1++ == '\0')
  			return (0);
  		us2++;
  	}
  	return (tolower(*us1) - tolower(*us2));
  }
  
  int
  strncasecmp(const char *s1, const char *s2, size_t n)
  {
  
  	if (n != 0) {
  		const u_char *us1 = (const u_char *)s1;
  		const u_char *us2 = (const u_char *)s2;
  
  		do {
  			if (tolower(*us1) != tolower(*us2))
  				return (tolower(*us1) - tolower(*us2));
  			if (*us1++ == '\0')
  				break;
  			us2++;
  		} while (--n != 0);
  	}
  	return (0);
  }
  