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.
11 // pretty-expanded FIXME #23616
13 #![feature(intrinsics)]
16 extern "rust-intrinsic" {
17 pub fn ctpop8(x: u8) -> u8;
18 pub fn ctpop16(x: u16) -> u16;
19 pub fn ctpop32(x: u32) -> u32;
20 pub fn ctpop64(x: u64) -> u64;
22 pub fn ctlz8(x: u8) -> u8;
23 pub fn ctlz16(x: u16) -> u16;
24 pub fn ctlz32(x: u32) -> u32;
25 pub fn ctlz64(x: u64) -> u64;
27 pub fn cttz8(x: u8) -> u8;
28 pub fn cttz16(x: u16) -> u16;
29 pub fn cttz32(x: u32) -> u32;
30 pub fn cttz64(x: u64) -> u64;
32 pub fn bswap16(x: u16) -> u16;
33 pub fn bswap32(x: u32) -> u32;
34 pub fn bswap64(x: u64) -> u64;
42 assert_eq!(ctpop8(0), 0);
43 assert_eq!(ctpop16(0), 0);
44 assert_eq!(ctpop32(0), 0);
45 assert_eq!(ctpop64(0), 0);
47 assert_eq!(ctpop8(1), 1);
48 assert_eq!(ctpop16(1), 1);
49 assert_eq!(ctpop32(1), 1);
50 assert_eq!(ctpop64(1), 1);
52 assert_eq!(ctpop8(10), 2);
53 assert_eq!(ctpop16(10), 2);
54 assert_eq!(ctpop32(10), 2);
55 assert_eq!(ctpop64(10), 2);
57 assert_eq!(ctpop8(100), 3);
58 assert_eq!(ctpop16(100), 3);
59 assert_eq!(ctpop32(100), 3);
60 assert_eq!(ctpop64(100), 3);
62 assert_eq!(ctpop8(-1), 8);
63 assert_eq!(ctpop16(-1), 16);
64 assert_eq!(ctpop32(-1), 32);
65 assert_eq!(ctpop64(-1), 64);
67 assert_eq!(ctlz8(0), 8);
68 assert_eq!(ctlz16(0), 16);
69 assert_eq!(ctlz32(0), 32);
70 assert_eq!(ctlz64(0), 64);
72 assert_eq!(ctlz8(1), 7);
73 assert_eq!(ctlz16(1), 15);
74 assert_eq!(ctlz32(1), 31);
75 assert_eq!(ctlz64(1), 63);
77 assert_eq!(ctlz8(10), 4);
78 assert_eq!(ctlz16(10), 12);
79 assert_eq!(ctlz32(10), 28);
80 assert_eq!(ctlz64(10), 60);
82 assert_eq!(ctlz8(100), 1);
83 assert_eq!(ctlz16(100), 9);
84 assert_eq!(ctlz32(100), 25);
85 assert_eq!(ctlz64(100), 57);
87 assert_eq!(cttz8(-1), 0);
88 assert_eq!(cttz16(-1), 0);
89 assert_eq!(cttz32(-1), 0);
90 assert_eq!(cttz64(-1), 0);
92 assert_eq!(cttz8(0), 8);
93 assert_eq!(cttz16(0), 16);
94 assert_eq!(cttz32(0), 32);
95 assert_eq!(cttz64(0), 64);
97 assert_eq!(cttz8(1), 0);
98 assert_eq!(cttz16(1), 0);
99 assert_eq!(cttz32(1), 0);
100 assert_eq!(cttz64(1), 0);
102 assert_eq!(cttz8(10), 1);
103 assert_eq!(cttz16(10), 1);
104 assert_eq!(cttz32(10), 1);
105 assert_eq!(cttz64(10), 1);
107 assert_eq!(cttz8(100), 2);
108 assert_eq!(cttz16(100), 2);
109 assert_eq!(cttz32(100), 2);
110 assert_eq!(cttz64(100), 2);
112 assert_eq!(cttz8(-1), 0);
113 assert_eq!(cttz16(-1), 0);
114 assert_eq!(cttz32(-1), 0);
115 assert_eq!(cttz64(-1), 0);
117 assert_eq!(bswap16(0x0A0B), 0x0B0A);
118 assert_eq!(bswap32(0x0ABBCC0D), 0x0DCCBB0A);
119 assert_eq!(bswap64(0x0122334455667708), 0x0877665544332201);