43 lines
757 B
Rust
43 lines
757 B
Rust
//@ run-pass
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#![allow(stable_features)]
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// A very basic test of const fn functionality.
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#![feature(const_indexing)]
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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 unsafe fn div(x: u32, y: u32) -> u32 {
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x / y
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}
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const fn generic<T>(t: T) -> T {
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t
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}
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const fn generic_arr<T: Copy>(t: [T; 1]) -> T {
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t[0]
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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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const DIV: u32 = unsafe{div(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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assert_eq!(DIV, 2);
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let _: [&'static str; sub(100, 99) as usize] = ["hi"];
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let _: [&'static str; generic(1)] = ["hi"];
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let _: [&'static str; generic_arr([1])] = ["hi"];
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}
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