libs/strncasecmp.c

   1 /* -*-c-*- */
   2 /* This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License as published by
   4  * the Free Software Foundation; either version 2 of the License, or
   5  * (at your option) any later version.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  15  */
  16
  17 #include "config.h"
  18
  19 int strncasecmp(register char *s1,register char *s2,register int n)
  20 {
  21         while ((--n > 0) && (tolower(*s1) == tolower(*s2)))
  22         {
  23                 ++s1;
  24                 ++s2;
  25                 if (!*s1 || !*s2)
  26                         break;
  27         }
  28         return (tolower(*s1) - tolower(*s2));
  29 }