File: byte_diff.c

package info (click to toggle)
qmail 1.03-38
  • links: PTS
  • area: non-free
  • in suites: sarge
  • size: 4,236 kB
  • ctags: 2,091
  • sloc: ansic: 16,309; makefile: 2,448; sh: 777; perl: 526
file content (16 lines) | stat: -rw-r--r-- 453 bytes parent folder | download | duplicates (66) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
#include "byte.h"

int byte_diff(s,n,t)
register char *s;
register unsigned int n;
register char *t;
{
  for (;;) {
    if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
    if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
    if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
    if (!n) return 0; if (*s != *t) break; ++s; ++t; --n;
  }
  return ((int)(unsigned int)(unsigned char) *s)
       - ((int)(unsigned int)(unsigned char) *t);
}