src/test/run-pass/u128.rs

   1 // Copyright 2016 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.
   4 //
   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.
  10
  11 // ignore-emscripten
  12
  13 #![feature(i128_type, test)]
  14
  15 extern crate test;
  16 use test::black_box as b;
  17
  18 fn main() {
  19     let x: u128 = 0xFFFF_FFFF_FFFF_FFFF__FFFF_FFFF_FFFF_FFFF;
  20     assert_eq!(0, !x);
  21     assert_eq!(0, !x);
  22     let y: u128 = 0xFFFF_FFFF_FFFF_FFFF__FFFF_FFFF_FFFF_FFFE;
  23     assert_eq!(!1, y);
  24     assert_eq!(x, y | 1);
  25     assert_eq!(0xFAFF_0000_FF8F_0000__FFFF_0000_FFFF_FFFE,
  26                y &
  27                0xFAFF_0000_FF8F_0000__FFFF_0000_FFFF_FFFF);
  28     let z: u128 = 0xABCD_EF;
  29     assert_eq!(z * z, 0x734C_C2F2_A521);
  30     assert_eq!(z * z * z * z, 0x33EE_0E2A_54E2_59DA_A0E7_8E41);
  31     assert_eq!(z + z + z + z, 0x2AF3_7BC);
  32     let k: u128 = 0x1234_5678_9ABC_DEFF_EDCB_A987_6543_210;
  33     assert_eq!(k + k, 0x2468_ACF1_3579_BDFF_DB97_530E_CA86_420);
  34     assert_eq!(0, k - k);
  35     assert_eq!(0x1234_5678_9ABC_DEFF_EDCB_A987_5A86_421, k - z);
  36     assert_eq!(0x1000_0000_0000_0000_0000_0000_0000_000,
  37                k - 0x234_5678_9ABC_DEFF_EDCB_A987_6543_210);
  38     assert_eq!(0x6EF5_DE4C_D3BC_2AAA_3BB4_CC5D_D6EE_8, k / 42);
  39     assert_eq!(0, k % 42);
  40     assert_eq!(15, z % 42);
  41     assert_eq!(0x169D_A8020_CEC18, k % 0x3ACB_FE49_FF24_AC);
  42     assert_eq!(0x91A2_B3C4_D5E6_F7, k >> 65);
  43     assert_eq!(0xFDB9_7530_ECA8_6420_0000_0000_0000_0000, k << 65);
  44     assert!(k > z);
  45     assert!(y > k);
  46     assert!(y < x);
  47     assert_eq!(x as u64, !0);
  48     assert_eq!(z as u64, 0xABCD_EF);
  49     assert_eq!(k as u64, 0xFEDC_BA98_7654_3210);
  50     assert_eq!(k as i128, 0x1234_5678_9ABC_DEFF_EDCB_A987_6543_210);
  51     assert_eq!((z as f64) as u128, z);
  52     assert_eq!((z as f32) as u128, z);
  53     assert_eq!((z as f64 * 16.0) as u128, z * 16);
  54     assert_eq!((z as f32 * 16.0) as u128, z * 16);
  55     let l :u128 = 432 << 100;
  56     assert_eq!((l as f32) as u128, l);
  57     assert_eq!((l as f64) as u128, l);
  58     // formatting
  59     let j: u128 = 1 << 67;
  60     assert_eq!("147573952589676412928", format!("{}", j));
  61     assert_eq!("80000000000000000", format!("{:x}", j));
  62     assert_eq!("20000000000000000000000", format!("{:o}", j));
  63     assert_eq!("10000000000000000000000000000000000000000000000000000000000000000000",
  64                format!("{:b}", j));
  65     assert_eq!("340282366920938463463374607431768211455",
  66         format!("{}", u128::max_value()));
  67     assert_eq!("147573952589676412928", format!("{:?}", j));
  68     // common traits
  69     assert_eq!(x, b(x.clone()));
  70     // overflow checks
  71     assert_eq!((z).checked_mul(z), Some(0x734C_C2F2_A521));
  72     assert_eq!((k).checked_mul(k), None);
  73     let l: u128 = b(u128::max_value() - 10);
  74     let o: u128 = b(17);
  75     assert_eq!(l.checked_add(b(11)), None);
  76     assert_eq!(l.checked_sub(l), Some(0));
  77     assert_eq!(o.checked_sub(b(18)), None);
  78     assert_eq!(b(1u128).checked_shl(b(127)), Some(1 << 127));
  79     assert_eq!(o.checked_shl(b(128)), None);
  80 }