Tracking Issue for `unchecked_div_rem`

Feature gate: #![feature(unchecked_div_rem)]

This is a tracking issue for unchecked versions of / and % on integers. This is similar to existing methods like unchecked_mul.

Public API

// in core

impl {i8, u8, i16, u16, i32, u32, i64, u64, i128, u128} {
    // Same preconditions as the versions in intrinsics

    /// Performs an unchecked division, resulting in undefined behavior where y == 0 or x == T::MIN && y == -1.
    pub fn unchecked_div(self, rhs: Self) -> Self;

    /// Returns the remainder of an unchecked division, resulting in undefined behavior when y == 0 or x == T::MIN && y == -1.
    pub fn unchecked_rem(self, rhs: Self) -> Self;
}

Steps / History

• ACP: https://github.com/rust-lang/libs-team/issues/526
• Implementation: #...
• Final comment period (FCP)^1
• Stabilization PR

Unresolved Questions

• Signed and unsigned have different preconditions; should the names be different as a stumbling stone when changing between the two? https://github.com/rust-lang/rust/issues/136716#issuecomment-2645029772