[clang] [llvm] [Clang][C++23] Core language changes from P1467R9 extended floating-point types and standard names. (PR #78503)

[M. Zeeshan Siddiqui via llvm-commits]

codemzs wrote:

Hi @shafik , it looks like you’re the designated reviewer for C++ standards. Would you mind taking a look at this PR? It has already been through several iterations with @tahonermann, and we’d really appreciate your feedback. Thanks!

https://github.com/llvm/llvm-project/pull/78503