1  extern void abort (void);
       2  
       3  int main()
       4  {
       5    float fi = __builtin_inff();
       6    double di = __builtin_inf();
       7    long double li = __builtin_infl();
       8  
       9    float fh = __builtin_huge_valf();
      10    double dh = __builtin_huge_val();
      11    long double lh = __builtin_huge_vall();
      12  
      13    if (fi + fi != fi)
      14      abort ();
      15    if (di + di != di)
      16      abort ();
      17    if (li + li != li)
      18      abort ();
      19  
      20    if (fi != fh)
      21      abort ();
      22    if (di != dh)
      23      abort ();
      24    if (li != lh)
      25      abort ();
      26  
      27    if (fi <= 0)
      28      abort ();
      29    if (di <= 0)
      30      abort ();
      31    if (li <= 0)
      32      abort ();
      33  
      34    return 0;
      35  }