| use std::hint::black_box as b; |
| |
| fn main() { |
| let x: u128 = 0xFFFF_FFFF_FFFF_FFFF__FFFF_FFFF_FFFF_FFFF; |
| assert_eq!(0, !x); |
| assert_eq!(0, !x); |
| let y: u128 = 0xFFFF_FFFF_FFFF_FFFF__FFFF_FFFF_FFFF_FFFE; |
| assert_eq!(!1, y); |
| assert_eq!(x, y | 1); |
| assert_eq!( |
| 0xFAFF_0000_FF8F_0000__FFFF_0000_FFFF_FFFE, |
| y & 0xFAFF_0000_FF8F_0000__FFFF_0000_FFFF_FFFF, |
| ); |
| let z: u128 = 0xABCD_EF; |
| assert_eq!(z * z, 0x734C_C2F2_A521); |
| assert_eq!(z * z * z * z, 0x33EE_0E2A_54E2_59DA_A0E7_8E41); |
| assert_eq!(z + z + z + z, 0x2AF3_7BC); |
| let k: u128 = 0x1234_5678_9ABC_DEFF_EDCB_A987_6543_210; |
| assert_eq!(k + k, 0x2468_ACF1_3579_BDFF_DB97_530E_CA86_420); |
| assert_eq!(0, k - k); |
| assert_eq!(0x1234_5678_9ABC_DEFF_EDCB_A987_5A86_421, k - z); |
| assert_eq!( |
| 0x1000_0000_0000_0000_0000_0000_0000_000, |
| k - 0x234_5678_9ABC_DEFF_EDCB_A987_6543_210, |
| ); |
| assert_eq!(0x6EF5_DE4C_D3BC_2AAA_3BB4_CC5D_D6EE_8, k / 42); |
| assert_eq!(0, k % 42); |
| assert_eq!(15, z % 42); |
| assert_eq!(0x169D_A8020_CEC18, k % 0x3ACB_FE49_FF24_AC); |
| assert_eq!(0x91A2_B3C4_D5E6_F7, k >> 65); |
| assert_eq!(0xFDB9_7530_ECA8_6420_0000_0000_0000_0000, k << 65); |
| assert!(k > z); |
| assert!(y > k); |
| assert!(y < x); |
| assert_eq!(x as u64, !0); |
| assert_eq!(z as u64, 0xABCD_EF); |
| assert_eq!(k as u64, 0xFEDC_BA98_7654_3210); |
| assert_eq!(k as i128, 0x1234_5678_9ABC_DEFF_EDCB_A987_6543_210); |
| assert_eq!((z as f64) as u128, z); |
| assert_eq!((z as f32) as u128, z); |
| assert_eq!((z as f64 * 16.0) as u128, z * 16); |
| assert_eq!((z as f32 * 16.0) as u128, z * 16); |
| let l: u128 = 432 << 100; |
| assert_eq!((l as f32) as u128, l); |
| assert_eq!((l as f64) as u128, l); |
| // formatting |
| let j: u128 = 1 << 67; |
| assert_eq!("147573952589676412928", format!("{}", j)); |
| assert_eq!("80000000000000000", format!("{:x}", j)); |
| assert_eq!("20000000000000000000000", format!("{:o}", j)); |
| assert_eq!( |
| "10000000000000000000000000000000000000000000000000000000000000000000", |
| format!("{:b}", j), |
| ); |
| assert_eq!("340282366920938463463374607431768211455", format!("{}", u128::MAX)); |
| assert_eq!("147573952589676412928", format!("{:?}", j)); |
| // common traits |
| assert_eq!(x, b(x.clone())); |
| // overflow checks |
| assert_eq!((z).checked_mul(z), Some(0x734C_C2F2_A521)); |
| assert_eq!((k).checked_mul(k), None); |
| let l: u128 = b(u128::MAX - 10); |
| let o: u128 = b(17); |
| assert_eq!(l.checked_add(b(11)), None); |
| assert_eq!(l.checked_sub(l), Some(0)); |
| assert_eq!(o.checked_sub(b(18)), None); |
| assert_eq!(b(1u128).checked_shl(b(127)), Some(1 << 127)); |
| assert_eq!(o.checked_shl(b(128)), None); |
| } |
