1 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
14 macro_rules! uint_module (($T:ty, $T_SIGNED:ty, $bits:expr) => (
16 pub static BITS : uint = $bits;
17 pub static BYTES : uint = ($bits / 8);
19 pub static MIN: $T = 0 as $T;
20 pub static MAX: $T = 0 as $T - 1 as $T;
34 assert!(MIN + MAX + 1 == 0);
39 num::test_num(10 as $T, 2 as $T);
43 fn test_bitwise_operators() {
44 assert!(0b1110 as $T == (0b1100 as $T).bitor(&(0b1010 as $T)));
45 assert!(0b1000 as $T == (0b1100 as $T).bitand(&(0b1010 as $T)));
46 assert!(0b0110 as $T == (0b1100 as $T).bitxor(&(0b1010 as $T)));
47 assert!(0b1110 as $T == (0b0111 as $T).shl(&(1 as $T)));
48 assert!(0b0111 as $T == (0b1110 as $T).shr(&(1 as $T)));
49 assert!(MAX - (0b1011 as $T) == (0b1011 as $T).not());
52 static A: $T = 0b0101100;
53 static B: $T = 0b0100001;
54 static C: $T = 0b1111001;
60 fn test_count_ones() {
61 assert!(A.count_ones() == 3);
62 assert!(B.count_ones() == 2);
63 assert!(C.count_ones() == 5);
67 fn test_count_zeros() {
68 assert!(A.count_zeros() == BITS as $T - 3);
69 assert!(B.count_zeros() == BITS as $T - 2);
70 assert!(C.count_zeros() == BITS as $T - 5);
75 assert_eq!(A.rotate_left(6).rotate_right(2).rotate_right(4), A);
76 assert_eq!(B.rotate_left(3).rotate_left(2).rotate_right(5), B);
77 assert_eq!(C.rotate_left(6).rotate_right(2).rotate_right(4), C);
79 // Rotating these should make no difference
81 // We test using 124 bits because to ensure that overlong bit shifts do
82 // not cause undefined behaviour. See #10183.
83 assert_eq!(_0.rotate_left(124), _0);
84 assert_eq!(_1.rotate_left(124), _1);
85 assert_eq!(_0.rotate_right(124), _0);
86 assert_eq!(_1.rotate_right(124), _1);
90 fn test_swap_bytes() {
91 assert_eq!(A.swap_bytes().swap_bytes(), A);
92 assert_eq!(B.swap_bytes().swap_bytes(), B);
93 assert_eq!(C.swap_bytes().swap_bytes(), C);
95 // Swapping these should make no difference
96 assert_eq!(_0.swap_bytes(), _0);
97 assert_eq!(_1.swap_bytes(), _1);
102 assert_eq!(Int::from_le(A.to_le()), A);
103 assert_eq!(Int::from_le(B.to_le()), B);
104 assert_eq!(Int::from_le(C.to_le()), C);
105 assert_eq!(Int::from_le(_0), _0);
106 assert_eq!(Int::from_le(_1), _1);
107 assert_eq!(_0.to_le(), _0);
108 assert_eq!(_1.to_le(), _1);
113 assert_eq!(Int::from_be(A.to_be()), A);
114 assert_eq!(Int::from_be(B.to_be()), B);
115 assert_eq!(Int::from_be(C.to_be()), C);
116 assert_eq!(Int::from_be(_0), _0);
117 assert_eq!(Int::from_be(_1), _1);
118 assert_eq!(_0.to_be(), _0);
119 assert_eq!(_1.to_be(), _1);
123 fn test_unsigned_checked_div() {
124 assert!(10u.checked_div(&2) == Some(5));
125 assert!(5u.checked_div(&0) == None);