Tracking Issue for `erf` and `erfc` for `f16, f32, f64, f128`

Feature gate: #![feature(float_erf)]

This is a tracking issue for the error function (erf) and complementary error function (erfc) in std. These functions are provided by libm and are also exposed in C's math.h (reference).

Public API

// in std, for now

impl f16 {
    pub fn erf(self) -> Self;
    pub fn erfc(self)-> Self;
}

impl f32 {
    pub fn erf(self) -> Self;
    pub fn erfc(self)-> Self;
}

impl f64 {
    pub fn erf(self) -> Self;
    pub fn erfc(self)-> Self;
}

impl f128 {
    pub fn erf(self) -> Self;
    pub fn erfc(self)-> Self;
}   

Steps / History

• ACP: https://github.com/rust-lang/libs-team/issues/89
• Implementation: https://github.com/rust-lang/rust/pull/136324
• Final comment period (FCP)^1
• Stabilization PR

Unresolved Questions

• None yet.