[libcxx-commits] [libcxx] [libc++] Implement std::gcd using the binary version (PR #77747)

[via libcxx-commits]

https://github.com/AdvenamTacet requested changes to this pull request.

`gcd` implementation and `gcd` test look good to me with addressed comments.

Please, add a benchmark in `libcxx/benchmarks/`.

https://github.com/llvm/llvm-project/pull/77747