1  long long
       2  signed_poly (long long sum, long x)
       3  {
       4    sum += (long long) (long) sum * (long long) x;
       5    return sum;
       6  }
       7  
       8  unsigned long long
       9  unsigned_poly (unsigned long long sum, unsigned long x)
      10  {
      11    sum += (unsigned long long) (unsigned long) sum * (unsigned long long) x;
      12    return sum;
      13  }
      14  
      15  int
      16  main (void)
      17  {
      18    if (signed_poly (2LL, -3) != -4LL)
      19      abort ();
      20    
      21    if (unsigned_poly (2ULL, 3) != 8ULL)
      22      abort ();
      23  
      24    exit (0);
      25  }