[libc-commits] [libc] [libc][math][c23] Add exp2m1f16 C23 math function (PR #105690)

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overmighty wrote:

This doesn't use `@llvm.exp2.f16`. We have our own implementations of exponential functions using polynomial approximations. I'll try to post IR and AMDGPU assembly output tomorrow if Joseph doesn't beat me to it.

https://github.com/llvm/llvm-project/pull/105690