25 lines
797 B
Rust
25 lines
797 B
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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use std::cmp::{PartialEq, PartialOrd};
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use std::num::NumCast;
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pub trait NumExt: PartialEq + PartialOrd + NumCast {}
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impl NumExt for f32 {}
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fn num_eq_one<T: NumExt>(n: T) {
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println!("{}", n == NumCast::from(1i).unwrap())
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}
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pub fn main() {
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num_eq_one(1f32); // you need to actually use the function to trigger the ICE
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}
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