[libcxx-commits] [libcxx] [libc++][functional] Implement `not_fn<NTTP>` (PR #86133)

[Jakub Mazurkiewicz via libcxx-commits]

JMazurkiewicz wrote:

@ldionne I've pushed series of fine-grained commits to address your comments. Also, it looks like GitHub CI is failing for some unknown reason, can you restart it later?

https://github.com/llvm/llvm-project/pull/86133