[PATCH v4 04/20] rust: add new `num` module with useful integer operations

[Alexandre Courbot]

On Thu May 22, 2025 at 5:44 PM JST, Miguel Ojeda wrote:
> On Thu, May 22, 2025 at 6:01 AM Alexandre Courbot <acourbot at nvidia.com> wrote:
>>
>> Either that, or we enable `#![feature(const_trait_impl)]`. I just tried
>> and with it we could indeed define and implement `NumExt` as const,
>> which looks like the cleanest way to do this to me.
>
> Hmm... I think that one is actively being worked on, with a possible
> syntax change in the works. We would need to speak to upstream Rust to
> see when we could reasonably stat to use it, and consider the older
> compilers (e.g. if the syntax changes).

Yeah that could be a problem. Which is a bit sad as with this approach
we only need one method name instead of having multiple const functions
suffixed with `_u8`, `_u16`, etc. for each type we want to extend.