| // Copyright 2014 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. |
| |
| // pretty-expanded FIXME #23616 |
| |
| pub trait Number: NumConv { |
| fn from<T:Number>(n: T) -> Self; |
| } |
| |
| impl Number for f64 { |
| fn from<T:Number>(n: T) -> f64 { n.to_float() } |
| } |
| |
| pub trait NumConv { |
| fn to_float(&self) -> f64; |
| } |
| |
| impl NumConv for f64 { |
| fn to_float(&self) -> f64 { *self } |
| } |
| |
| pub fn main() { |
| let _: f64 = Number::from(0.0f64); |
| } |
