/***************************************************************************** * vcmp - string comparison on first length chars of s1 and s2 * * returns <0 if s1 < s2, =0 if s1 IS s2, >0 if s1 > s2 * *****************************************************************************/ vcmp (s1, s2, length) register char *s1; register char *s2; register length; { while (length-- > 0 && *s1++ == *s2++) ; return (*--s1 - *--s2); }