[libcxx-commits] [libcxx] [libc++] Avoid redeclaring lgamma_r (PR #153631)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 commented:

Is `lgamma_r` unconditionally provided? I think it would be really nice if we could get a private implementation from LLVM libc so that we can be thread-safe on every platform.

https://github.com/llvm/llvm-project/pull/153631