[llvm-branch-commits] [libcxx] release/20.x: [libc++] Set feature-test macro `__cpp_lib_atomic_float` (#127559) (PR #127732)

[Nikolas Klauser via llvm-branch-commits]

https://github.com/philnik777 approved this pull request.


https://github.com/llvm/llvm-project/pull/127732