Tests for the 128 bit integers

src/test/run-pass/i128.rs

+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 * -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);
+    // 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
+    x.clone();
+}

src/test/run-pass/u128.rs

+fn main() {
+    let x: u128 = 0xFFFF_FFFF_FFFF_FFFF__FFFF_FFFF_FFFF_FFFF;
+    assert_eq!(0, !x);
+    let y: u128 = 0xFFFF_FFFF_FFFF_FFFF__FFFF_FFFF_FFFF_FFFE;
+    assert_eq!(!1, y);
+    let z: u128 = 0xABCD_EF;
+    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!(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);
+    // 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!("147573952589676412928", format!("{:?}", j));
+    // common traits
+    x.clone();
+}