summaryrefslogtreecommitdiff
path: root/ucspi-tcp-0.88/str_diff.c
blob: 071e7f554b72cf55bddb1f8032915556dadd27c1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
#include "str.h"

int str_diff(register const char *s,register const char *t)
{
  register char x;

  for (;;) {
    x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
    x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
    x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
    x = *s; if (x != *t) break; if (!x) break; ++s; ++t;
  }
  return ((int)(unsigned int)(unsigned char) x)
       - ((int)(unsigned int)(unsigned char) *t);
}