Tracking Issue for BITS constant for non-zero integers

[nvzqz]

Feature gate: #![feature(nonzero_bits)]

This is a tracking issue for adding the associated BITS constant to NonZero{U,I}{8,16,32,64,128,size}.

This is useful when a type alias refers to either a regular or non-zero integer.

Public API

Repeated for all NonZeroX integers:

impl NonZeroUsize {
    pub const BITS: u32 = usize::BITS;
}

Steps / History

• Implementation: Implement BITS constant for non-zero integers #93292
• Final comment period (FCP)
• Stabilization PR: Stabilize nonzero_bits #101514

Unresolved Questions

• None yet.

[leonardo-m]

In the end I hope we'll have proper general ranged integral types in Rust (as in Ada), that will also replace all the NonZeroXX types :-)