lib/ansi/memcmp.c

   1 /*
   2  * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
   3  * See the copyright notice in the ACK home directory, in the file "Copyright".
   4  */
   5 /* $Id$ */
   6
   7 #include        <string.h>
   8
   9 int
  10 memcmp(const void *s1, const void *s2, size_t n)
  11 {
  12         register const unsigned char *p1 = s1, *p2 = s2;
  13
  14         if (n) {
  15                 n++;
  16                 while (--n > 0) {
  17                         if (*p1++ == *p2++) continue;
  18                         return *--p1 - *--p2;
  19                 }
  20         }
  21         return 0;
  22 }