82 lines
2.1 KiB
Rust
82 lines
2.1 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Testing shifts for various combinations of integers
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// Issue #1570
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pub fn main() {
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test_misc();
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test_expr();
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test_const();
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}
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fn test_misc() {
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assert 1 << 1i8 << 1u8 << 1i16 << 1 as char << 1u64 == 32;
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}
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fn test_expr() {
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let v10 = 10 as uint;
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let v4 = 4 as u8;
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let v2 = 2 as u8;
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assert (v10 >> v2 == v2 as uint);
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assert (v10 << v4 == 160 as uint);
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let v10 = 10 as u8;
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let v4 = 4 as uint;
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let v2 = 2 as uint;
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assert (v10 >> v2 == v2 as u8);
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assert (v10 << v4 == 160 as u8);
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let v10 = 10 as int;
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let v4 = 4 as i8;
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let v2 = 2 as i8;
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assert (v10 >> v2 == v2 as int);
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assert (v10 << v4 == 160 as int);
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let v10 = 10 as i8;
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let v4 = 4 as int;
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let v2 = 2 as int;
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assert (v10 >> v2 == v2 as i8);
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assert (v10 << v4 == 160 as i8);
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let v10 = 10 as uint;
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let v4 = 4 as int;
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let v2 = 2 as int;
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assert (v10 >> v2 == v2 as uint);
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assert (v10 << v4 == 160 as uint);
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}
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fn test_const() {
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const r1_1: uint = 10u >> 2u8;
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const r2_1: uint = 10u << 4u8;
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assert r1_1 == 2 as uint;
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assert r2_1 == 160 as uint;
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const r1_2: u8 = 10u8 >> 2u;
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const r2_2: u8 = 10u8 << 4u;
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assert r1_2 == 2 as u8;
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assert r2_2 == 160 as u8;
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const r1_3: int = 10 >> 2i8;
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const r2_3: int = 10 << 4i8;
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assert r1_3 == 2 as int;
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assert r2_3 == 160 as int;
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const r1_4: i8 = 10i8 >> 2;
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const r2_4: i8 = 10i8 << 4;
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assert r1_4 == 2 as i8;
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assert r2_4 == 160 as i8;
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const r1_5: uint = 10u >> 2i8;
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const r2_5: uint = 10u << 4i8;
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assert r1_5 == 2 as uint;
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assert r2_5 == 160 as uint;
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}
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