1#include "case.h"
 2
 3int case_diffs(s,t)
 4register char *s;
 5register char *t;
 6{
 7  register unsigned char x;
 8  register unsigned char y;
 9
10  for (;;) {
11    x = *s++ - 'A';
12    if (x <= 'Z' - 'A') x += 'a'; else x += 'A';
13    y = *t++ - 'A';
14    if (y <= 'Z' - 'A') y += 'a'; else y += 'A';
15    if (x != y) break;
16    if (!x) break;
17  }
18  return ((int)(unsigned int) x) - ((int)(unsigned int) y);
19}