c9d4ad07c4
It is simply defined as `f64` across every platform right now. A use case hasn't been presented for a `float` type defined as the highest precision floating point type implemented in hardware on the platform. Performance-wise, using the smallest precision correct for the use case greatly saves on cache space and allows for fitting more numbers into SSE/AVX registers. If there was a use case, this could be implemented as simply a type alias or a struct thanks to `#[cfg(...)]`. Closes #6592 The mailing list thread, for reference: https://mail.mozilla.org/pipermail/rust-dev/2013-July/004632.html
36 lines
1.0 KiB
Rust
36 lines
1.0 KiB
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::either::{Either, Left, Right};
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fn f(x: &mut Either<int,f64>, y: &Either<int,f64>) -> int {
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match *y {
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Left(ref z) => {
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*x = Right(1.0);
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*z
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}
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_ => fail2!()
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}
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}
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fn g() {
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let mut x: Either<int,f64> = Left(3);
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println(f(&mut x, &x).to_str()); //~ ERROR cannot borrow
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}
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fn h() {
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let mut x: Either<int,f64> = Left(3);
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let y: &Either<int, f64> = &x;
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let z: &mut Either<int, f64> = &mut x; //~ ERROR cannot borrow
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*z = *y;
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}
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fn main() {}
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