blob: 09015d983ea7cca35b5690dd3d2d96ea25e7e31f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::cmp::{PartialEq, PartialOrd};
use std::num::NumCast;
pub trait NumExt: PartialEq + PartialOrd + NumCast {}
impl NumExt for f32 {}
fn num_eq_one<T: NumExt>(n: T) {
println!("{}", n == NumCast::from(1).unwrap())
}
pub fn main() {
num_eq_one(1f32); // you need to actually use the function to trigger the ICE
}
|