1  #define X  5.9486574767861588254287966331400356538172e4931L
       2  
       3  long double x = X + X;
       4  long double y = 2.0L * X;
       5  
       6  main ()
       7  {
       8  #if ! defined (__vax__) && ! defined (_CRAY)
       9    if (x != y)
      10      abort ();
      11  #endif
      12    exit (0);
      13  }