[libcxx-commits] [libcxx] [libc++] add floating point type check for uniform real distrubtion (PR #70564)

[Louis Dionne via libcxx-commits]

ldionne wrote:

We have a utility called `__libcpp_random_is_valid_urng` in [`libcxx/include/__random/is_valid.h`](https://github.com/llvm/llvm-project/blob/main/libcxx/include/__random/is_valid.h#L57-L61) -- should we instead create something similar to it and handle http://eel.is/c++draft/rand.req.genl more generally?

https://github.com/llvm/llvm-project/pull/70564