[libc-commits] [libc] [llvm] [libc][math] Implement half precision tgamma function (PR #192590)

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AnonMiraj wrote:

Btw, I think it would be a good idea to add an `is_integer()` function to `fputil`. It's already used in the power functions and will be used for `tgamma`, `lgamma`, and maybe other functions in the future, so adding it to `BasicOperations.h` seems like a good idea.

https://github.com/llvm/llvm-project/pull/192590