1int 2test_endianness() 3{ 4 union doubleword 5 { 6 double d; 7 unsigned long u[2]; 8 } dw; 9 dw.d = 10; 10 return dw.u[0] != 0 ? 1 : 0; 11} 12 13int 14test_endianness_vol() 15{ 16 union doubleword 17 { 18 volatile double d; 19 volatile long u[2]; 20 } dw; 21 dw.d = 10; 22 return dw.u[0] != 0 ? 1 : 0; 23} 24 25main () 26{ 27 if (test_endianness () != test_endianness_vol ()) 28 abort (); 29 exit (0); 30} 31