[libc-commits] [libc] [libc][stdfix] Add integer square root with fixed point output functions. (PR #83959)

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lntue wrote:

> > Even though it's not part of ISO 18037
> 
> What does that mean? Are these now functions outside of that spec? 😒

Technically, the ISO standard does not define any math functions beyond mixed integer-and-fixed-point multiplications and divisions, not even including `sqrt`.

Ideally, I would like to have all C23 math functions available for all numeric types.  We could have a complete math library for fixed point type and with the proof of their usefulness, maybe fixed point types + its math library will be incorporated into the future C standards, and ours can be served as a reference implementation?

https://github.com/llvm/llvm-project/pull/83959