mdw@git.distorted.org.uk Git - qmail/blob - str_diff.c

   1 #include "str.h"
   2
   3 int str_diff(s,t)
   4 register char *s;
   5 register char *t;
   6 {
   7   register char x;
   8
   9   for (;;) {
  10     x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
  11     x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
  12     x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
  13     x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
  14   }
  15   return ((int)(unsigned int)(unsigned char) x)
  16        - ((int)(unsigned int)(unsigned char) *t);
  17 }