rust/library/std
Michael Goulet 2f3f001423
Rollup merge of #130568 - eduardosm:const-float-methods, r=RalfJung,tgross35
Make some float methods unstable `const fn`

Some float methods are now `const fn` under the `const_float_methods` feature gate.

I also made some unstable methods `const fn`, keeping their constness under their respective feature gate.

In order to support `min`, `max`, `abs` and `copysign`, the implementation of some intrinsics had to be moved from Miri to rustc_const_eval (cc `@RalfJung).`

Tracking issue: https://github.com/rust-lang/rust/issues/130843

```rust
impl <float> {
    // #[feature(const_float_methods)]
    pub const fn recip(self) -> Self;
    pub const fn to_degrees(self) -> Self;
    pub const fn to_radians(self) -> Self;
    pub const fn max(self, other: Self) -> Self;
    pub const fn min(self, other: Self) -> Self;
    pub const fn clamp(self, min: Self, max: Self) -> Self;
    pub const fn abs(self) -> Self;
    pub const fn signum(self) -> Self;
    pub const fn copysign(self, sign: Self) -> Self;

    // #[feature(float_minimum_maximum)]
    pub const fn maximum(self, other: Self) -> Self;
    pub const fn minimum(self, other: Self) -> Self;

    // Only f16/f128 (f32/f64 already const)
    pub const fn is_sign_positive(self) -> bool;
    pub const fn is_sign_negative(self) -> bool;
    pub const fn next_up(self) -> Self;
    pub const fn next_down(self) -> Self;
}
```

r? libs-api

try-job: dist-s390x-linux
2024-10-15 12:33:35 -04:00
..
benches Reformat use declarations. 2024-07-29 08:26:52 +10:00
src Rollup merge of #130568 - eduardosm:const-float-methods, r=RalfJung,tgross35 2024-10-15 12:33:35 -04:00
tests rustc_target: Add sme-b16b16 as an explicit aarch64 target feature 2024-10-10 10:24:57 +00:00
build.rs enable f16 and f128 on windows-gnullvm targets 2024-10-05 23:55:39 +02:00
Cargo.toml Rollup merge of #128967 - devnexen:get_path_fbsd_upd, r=joboet 2024-10-14 06:04:26 +02:00