1 use std::hint::black_box as b;
4 let x: u128 = 0xFFFF_FFFF_FFFF_FFFF__FFFF_FFFF_FFFF_FFFF;
7 let y: u128 = 0xFFFF_FFFF_FFFF_FFFF__FFFF_FFFF_FFFF_FFFE;
11 0xFAFF_0000_FF8F_0000__FFFF_0000_FFFF_FFFE,
12 y & 0xFAFF_0000_FF8F_0000__FFFF_0000_FFFF_FFFF,
14 let z: u128 = 0xABCD_EF;
15 assert_eq!(z * z, 0x734C_C2F2_A521);
16 assert_eq!(z * z * z * z, 0x33EE_0E2A_54E2_59DA_A0E7_8E41);
17 assert_eq!(z + z + z + z, 0x2AF3_7BC);
18 let k: u128 = 0x1234_5678_9ABC_DEFF_EDCB_A987_6543_210;
19 assert_eq!(k + k, 0x2468_ACF1_3579_BDFF_DB97_530E_CA86_420);
21 assert_eq!(0x1234_5678_9ABC_DEFF_EDCB_A987_5A86_421, k - z);
23 0x1000_0000_0000_0000_0000_0000_0000_000,
24 k - 0x234_5678_9ABC_DEFF_EDCB_A987_6543_210,
26 assert_eq!(0x6EF5_DE4C_D3BC_2AAA_3BB4_CC5D_D6EE_8, k / 42);
27 assert_eq!(0, k % 42);
28 assert_eq!(15, z % 42);
29 assert_eq!(0x169D_A8020_CEC18, k % 0x3ACB_FE49_FF24_AC);
30 assert_eq!(0x91A2_B3C4_D5E6_F7, k >> 65);
31 assert_eq!(0xFDB9_7530_ECA8_6420_0000_0000_0000_0000, k << 65);
35 assert_eq!(x as u64, !0);
36 assert_eq!(z as u64, 0xABCD_EF);
37 assert_eq!(k as u64, 0xFEDC_BA98_7654_3210);
38 assert_eq!(k as i128, 0x1234_5678_9ABC_DEFF_EDCB_A987_6543_210);
39 assert_eq!((z as f64) as u128, z);
40 assert_eq!((z as f32) as u128, z);
41 assert_eq!((z as f64 * 16.0) as u128, z * 16);
42 assert_eq!((z as f32 * 16.0) as u128, z * 16);
43 let l: u128 = 432 << 100;
44 assert_eq!((l as f32) as u128, l);
45 assert_eq!((l as f64) as u128, l);
47 let j: u128 = 1 << 67;
48 assert_eq!("147573952589676412928", format!("{}", j));
49 assert_eq!("80000000000000000", format!("{:x}", j));
50 assert_eq!("20000000000000000000000", format!("{:o}", j));
52 "10000000000000000000000000000000000000000000000000000000000000000000",
55 assert_eq!("340282366920938463463374607431768211455", format!("{}", u128::MAX));
56 assert_eq!("147573952589676412928", format!("{:?}", j));
58 assert_eq!(x, b(x.clone()));
60 assert_eq!((z).checked_mul(z), Some(0x734C_C2F2_A521));
61 assert_eq!((k).checked_mul(k), None);
62 let l: u128 = b(u128::MAX - 10);
64 assert_eq!(l.checked_add(b(11)), None);
65 assert_eq!(l.checked_sub(l), Some(0));
66 assert_eq!(o.checked_sub(b(18)), None);
67 assert_eq!(b(1u128).checked_shl(b(127)), Some(1 << 127));
68 assert_eq!(o.checked_shl(b(128)), None);