[libc-commits] [libc] [libc][math] Fix -Wc++23-extensions warnings in erfcf16 and erff16. (PR #215613)

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zhangweize9-cyber wrote:

> The errors from windows CI earlier was not related, it was infra issue.  You can double check to make sure that `FPBits` is declared at the beginning of the scopes, and that it matches with float16.  If the issue is missing declaration, other targets will also fail.

Got it! Thank you for the guidance. 

My first thought when I saw GitHub Actions was down was that it was due to a syntax error, but I overlooked this probabilistic possibility. 

Regarding the scope declaration issue, I tested both methods locally, and the results showed no errors during compilation or unit testing. 

Therefore, I conclude that both methods are valid. I need to observe the GitHub Actions process further later. (As an aside, I think adding at least one retry based on whether the returned result includes status code 52, or at least adding a message informing the maintainers to try re-uploading the code, might solve this problem.)

I will modify it according to the interface you provided after I wake up first thing tomorrow morning. Thank you for your review! 

https://github.com/llvm/llvm-project/pull/215613