1  /*
       2   * memcmp --- compare strings.
       3   *
       4   * We use our own routine since it has to act like strcmp() for return
       5   * value, and the BSD manual says bcmp() only returns zero/non-zero.
       6   */
       7  
       8  int
       9  memcmp (s1, s2, l)
      10  char *s1, *s2;
      11  int l;
      12  {
      13  	for (; l-- > 0; s1++, s2++) {
      14  		if (*s1 != *s2)
      15  			return (*s1 - *s2);
      16  	}
      17  	return (0);
      18  }