33 lines
794 B
Rust
33 lines
794 B
Rust
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// Copyright 2015 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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// A very basic test of const fn functionality.
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#![feature(const_fn)]
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const fn add(x: u32, y: u32) -> u32 {
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x + y
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}
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const fn sub(x: u32, y: u32) -> u32 {
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x - y
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}
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const SUM: u32 = add(44, 22);
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const DIFF: u32 = sub(44, 22);
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fn main() {
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assert_eq!(SUM, 66);
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assert!(SUM != 88);
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assert_eq!(DIFF, 22);
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}
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