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 } 14