| // run-pass |
| #![allow(non_upper_case_globals)] |
| #![allow(overflowing_literals)] |
| |
| // Testing shifts for various combinations of integers |
| // Issue #1570 |
| |
| |
| pub fn main() { |
| test_misc(); |
| test_expr(); |
| test_const(); |
| } |
| |
| fn test_misc() { |
| assert_eq!(1 << 1 << 1 << 1 << 1 << 1, 32); |
| } |
| |
| fn test_expr() { |
| let v10 = 10 as usize; |
| let v4 = 4 as u8; |
| let v2 = 2 as u8; |
| assert_eq!(v10 >> v2 as usize, v2 as usize); |
| assert_eq!(v10 << v4 as usize, 160 as usize); |
| |
| let v10 = 10 as u8; |
| let v4 = 4 as usize; |
| let v2 = 2 as usize; |
| assert_eq!(v10 >> v2 as usize, v2 as u8); |
| assert_eq!(v10 << v4 as usize, 160 as u8); |
| |
| let v10 = 10 as isize; |
| let v4 = 4 as i8; |
| let v2 = 2 as i8; |
| assert_eq!(v10 >> v2 as usize, v2 as isize); |
| assert_eq!(v10 << v4 as usize, 160 as isize); |
| |
| let v10 = 10 as i8; |
| let v4 = 4 as isize; |
| let v2 = 2 as isize; |
| assert_eq!(v10 >> v2 as usize, v2 as i8); |
| assert_eq!(v10 << v4 as usize, 160 as i8); |
| |
| let v10 = 10 as usize; |
| let v4 = 4 as isize; |
| let v2 = 2 as isize; |
| assert_eq!(v10 >> v2 as usize, v2 as usize); |
| assert_eq!(v10 << v4 as usize, 160 as usize); |
| } |
| |
| fn test_const() { |
| static r1_1: usize = 10_usize >> 2_usize; |
| static r2_1: usize = 10_usize << 4_usize; |
| assert_eq!(r1_1, 2 as usize); |
| assert_eq!(r2_1, 160 as usize); |
| |
| static r1_2: u8 = 10u8 >> 2_usize; |
| static r2_2: u8 = 10u8 << 4_usize; |
| assert_eq!(r1_2, 2 as u8); |
| assert_eq!(r2_2, 160 as u8); |
| |
| static r1_3: isize = 10 >> 2_usize; |
| static r2_3: isize = 10 << 4_usize; |
| assert_eq!(r1_3, 2 as isize); |
| assert_eq!(r2_3, 160 as isize); |
| |
| static r1_4: i8 = 10i8 >> 2_usize; |
| static r2_4: i8 = 10i8 << 4_usize; |
| assert_eq!(r1_4, 2 as i8); |
| assert_eq!(r2_4, 160 as i8); |
| |
| static r1_5: usize = 10_usize >> 2_usize; |
| static r2_5: usize = 10_usize << 4_usize; |
| assert_eq!(r1_5, 2 as usize); |
| assert_eq!(r2_5, 160 as usize); |
| } |
