| // run-pass |
| #![allow(overflowing_literals)] |
| |
| #![feature(test)] |
| |
| extern crate test; |
| use test::black_box as b; |
| |
| fn main() { |
| let x: i128 = -1; |
| assert_eq!(0, !x); |
| let y: i128 = -2; |
| assert_eq!(!1, y); |
| let z: i128 = 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, 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: i128 = -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!(-k, k / -1); |
| assert_eq!(-0x91A2_B3C4_D5E6_F8, 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 i64, -1); |
| assert_eq!(z as i64, 0xABCD_EF); |
| assert_eq!(k as i64, -0xFEDC_BA98_7654_3210); |
| assert_eq!(k as u128, 0xFEDC_BA98_7654_3210_0123_4567_89AB_CDF0); |
| assert_eq!(-k as u128, 0x1234_5678_9ABC_DEFF_EDCB_A987_6543_210); |
| assert_eq!((-z as f64) as i128, -z); |
| assert_eq!((-z as f32) as i128, -z); |
| assert_eq!((-z as f64 * 16.0) as i128, -z * 16); |
| assert_eq!((-z as f32 * 16.0) as i128, -z * 16); |
| // Same stuff as above, but blackboxed, to force use of intrinsics |
| let x: i128 = b(-1); |
| assert_eq!(0, !x); |
| let y: i128 = b(-2); |
| assert_eq!(!1, y); |
| let z: i128 = b(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, 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: i128 = b(-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!(-k, k / -1); |
| assert_eq!(-0x91A2_B3C4_D5E6_F8, 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 i64, -1); |
| assert_eq!(z as i64, 0xABCD_EF); |
| assert_eq!(k as i64, -0xFEDC_BA98_7654_3210); |
| assert_eq!(k as u128, 0xFEDC_BA98_7654_3210_0123_4567_89AB_CDF0); |
| assert_eq!(-k as u128, 0x1234_5678_9ABC_DEFF_EDCB_A987_6543_210); |
| assert_eq!((-z as f64) as i128, -z); |
| assert_eq!((-z as f32) as i128, -z); |
| assert_eq!((-z as f64 * 16.0) as i128, -z * 16); |
| assert_eq!((-z as f32 * 16.0) as i128, -z * 16); |
| // formatting |
| let j: i128 = -(1 << 67); |
| assert_eq!("-147573952589676412928", format!("{}", j)); |
| assert_eq!("fffffffffffffff80000000000000000", format!("{:x}", j)); |
| assert_eq!("3777777777777777777760000000000000000000000", format!("{:o}", j)); |
| assert_eq!("1111111111111111111111111111111111111111111111111111111111111\ |
| 0000000000000000000000000000000000000000000000000000000000000000000", |
| format!("{:b}", j)); |
| 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!((z).checked_mul(z), Some(0x734C_C2F2_A521)); |
| assert_eq!((k).checked_mul(k), None); |
| let l: i128 = b(i128::MIN); |
| let o: i128 = b(17); |
| assert_eq!(l.checked_sub(b(2)), None); |
| assert_eq!(l.checked_add(l), None); |
| assert_eq!((-(l + 1)).checked_add(2), None); |
| assert_eq!(l.checked_sub(l), Some(0)); |
| assert_eq!(b(1u128).checked_shl(b(127)), Some(1 << 127)); |
| assert_eq!(o.checked_shl(b(128)), None); |
| |
| // https://github.com/rust-lang/rust/issues/41228 |
| assert_eq!(b(-87559967289969187895646876466835277875_i128) / |
| b(84285771033834995895337664386045050880_i128), |
| -1i128); |
| |
| // iter-arithmetic traits |
| assert_eq!(10i128, [1i128, 2, 3, 4].iter().sum()); |
| assert_eq!(24i128, [1i128, 2, 3, 4].iter().product()); |
| } |
