[libcxx-commits] [libcxx] [libc++][math] Fix acceptance of convertible types in `std::isnan()` and `std::isinf()` (PR #98952)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne commented:

You're right about us previously not really understanding why `_LIBCPP_PREFERRED_OVERLOAD` was used so liberally. However, given the complexity of adding it only in the cases where it's actually required, I'd drop the non-test changes from this patch and only improve the test coverage.

https://github.com/llvm/llvm-project/pull/98952