[libcxx-commits] [libcxx] WIP - [libc++][string] P2587R3: `to_string` or not `to_string` (PR #78100)

[Mark de Wever via libcxx-commits]

mordante wrote:

> Can I take this with your test cases reused?
> 
> I have some thoughts on separately compiled functions, but I'm a bit too unfamiliar with test cases.

IMO we shouldn't do this at the moment. `std::format` for `long double` is still not working properly when `long double` is not an IEEE-754 double type.

https://github.com/llvm/llvm-project/pull/78100