3 struct Pair<T, U>(T, U);
6 struct Triple<T>(T, T, T);
9 union U<A: Copy, B: Copy> {
15 union W<A: Copy, B: Copy> {
20 #[cfg(target_endian = "little")]
22 let mut u = U::<u8, u16> { b: 0xDE_DE };
24 assert_eq!(u.b, 0xDE_BE);
26 let mut u = U::<u16, u32> { b: 0xDEAD_DEAD };
28 assert_eq!(u.b, 0xDEAD_BEEF);
30 let mut u = U::<u32, u64> { b: 0xDEADBEEF_DEADBEEF };
32 assert_eq!(u.b, 0xDEADBEEF_BAADF00D);
34 let mut w = W::<Pair<Triple<u8>, u8>, u32> { b: 0xDEAD_DEAD };
35 w.a.0 = Triple(0, 0, 0);
36 assert_eq!(w.b, 0xDE00_0000);
38 let mut w = W::<Pair<u8, Triple<u8>>, u32> { b: 0xDEAD_DEAD };
39 w.a.1 = Triple(0, 0, 0);
40 assert_eq!(w.b, 0x0000_00AD);
43 #[cfg(target_endian = "big")]
45 let mut u = U::<u8, u16> { b: 0xDE_DE };
47 assert_eq!(u.b, 0xBE_DE);
49 let mut u = U::<u16, u32> { b: 0xDEAD_DEAD };
51 assert_eq!(u.b, 0xBEEF_DEAD);
53 let mut u = U::<u32, u64> { b: 0xDEADBEEF_DEADBEEF };
55 assert_eq!(u.b, 0xBAADF00D_DEADBEEF);
57 let mut w = W::<Pair<Triple<u8>, u8>, u32> { b: 0xDEAD_DEAD };
58 w.a.0 = Triple(0, 0, 0);
59 assert_eq!(w.b, 0x0000_00AD);
61 let mut w = W::<Pair<u8, Triple<u8>>, u32> { b: 0xDEAD_DEAD };
62 w.a.1 = Triple(0, 0, 0);
63 assert_eq!(w.b, 0xDE00_0000);