1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // pretty-expanded FIXME #23616
13 pub trait Number: NumConv {
14 fn from<T:Number>(n: T) -> Self;
18 fn from<T:Number>(n: T) -> f64 { n.to_float() }
22 fn to_float(&self) -> f64;
25 impl NumConv for f64 {
26 fn to_float(&self) -> f64 { *self }
30 let _: f64 = Number::from(0.0f64);