1 // Copyright 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.
13 macro_rules! uint_module (($T:ty, $T_i:ident) => (
18 use core::num::CheckedDiv;
24 assert!(MIN + MAX + 1 == 0);
29 num::test_num(10 as $T, 2 as $T);
33 fn test_bitwise_operators() {
34 assert!(0b1110 as $T == (0b1100 as $T).bitor(&(0b1010 as $T)));
35 assert!(0b1000 as $T == (0b1100 as $T).bitand(&(0b1010 as $T)));
36 assert!(0b0110 as $T == (0b1100 as $T).bitxor(&(0b1010 as $T)));
37 assert!(0b1110 as $T == (0b0111 as $T).shl(&(1 as $T)));
38 assert!(0b0111 as $T == (0b1110 as $T).shr(&(1 as $T)));
39 assert!(MAX - (0b1011 as $T) == (0b1011 as $T).not());
42 static A: $T = 0b0101100;
43 static B: $T = 0b0100001;
44 static C: $T = 0b1111001;
50 fn test_count_ones() {
51 assert!(A.count_ones() == 3);
52 assert!(B.count_ones() == 2);
53 assert!(C.count_ones() == 5);
57 fn test_count_zeros() {
58 assert!(A.count_zeros() == BITS as $T - 3);
59 assert!(B.count_zeros() == BITS as $T - 2);
60 assert!(C.count_zeros() == BITS as $T - 5);
65 assert_eq!(A.rotate_left(6).rotate_right(2).rotate_right(4), A);
66 assert_eq!(B.rotate_left(3).rotate_left(2).rotate_right(5), B);
67 assert_eq!(C.rotate_left(6).rotate_right(2).rotate_right(4), C);
69 // Rotating these should make no difference
71 // We test using 124 bits because to ensure that overlong bit shifts do
72 // not cause undefined behaviour. See #10183.
73 assert_eq!(_0.rotate_left(124), _0);
74 assert_eq!(_1.rotate_left(124), _1);
75 assert_eq!(_0.rotate_right(124), _0);
76 assert_eq!(_1.rotate_right(124), _1);
78 // Rotating by 0 should have no effect
79 assert_eq!(A.rotate_left(0), A);
80 assert_eq!(B.rotate_left(0), B);
81 assert_eq!(C.rotate_left(0), C);
82 // Rotating by a multiple of word size should also have no effect
83 assert_eq!(A.rotate_left(64), A);
84 assert_eq!(B.rotate_left(64), B);
85 assert_eq!(C.rotate_left(64), C);
89 fn test_swap_bytes() {
90 assert_eq!(A.swap_bytes().swap_bytes(), A);
91 assert_eq!(B.swap_bytes().swap_bytes(), B);
92 assert_eq!(C.swap_bytes().swap_bytes(), C);
94 // Swapping these should make no difference
95 assert_eq!(_0.swap_bytes(), _0);
96 assert_eq!(_1.swap_bytes(), _1);
101 assert_eq!(Int::from_le(A.to_le()), A);
102 assert_eq!(Int::from_le(B.to_le()), B);
103 assert_eq!(Int::from_le(C.to_le()), C);
104 assert_eq!(Int::from_le(_0), _0);
105 assert_eq!(Int::from_le(_1), _1);
106 assert_eq!(_0.to_le(), _0);
107 assert_eq!(_1.to_le(), _1);
112 assert_eq!(Int::from_be(A.to_be()), A);
113 assert_eq!(Int::from_be(B.to_be()), B);
114 assert_eq!(Int::from_be(C.to_be()), C);
115 assert_eq!(Int::from_be(_0), _0);
116 assert_eq!(Int::from_be(_1), _1);
117 assert_eq!(_0.to_be(), _0);
118 assert_eq!(_1.to_be(), _1);
122 fn test_unsigned_checked_div() {
123 assert!(10u.checked_div(&2) == Some(5));
124 assert!(5u.checked_div(&0) == None);