str_diff.c

来自「daemontools-0.76.tar.gz是在linux环境下自动监控进程的」· C语言 代码 · 共 18 行

/* Public domain. */

#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);
}