00(long long a, long long b, char *file, int line)  {    long long res;    if (b==0)    {       fprintf(stderr, "DIV00: divide by zero: %d/%d in %s: line %d\n", (int)a, (int)b, file, line);       return 0;    }     if (!VERIFY_INT(a) || !VERIFY_INT(b))    {       fprintf (stderr, "