[libc-commits] [libc] [llvm] [libc][math][c23] Add rsqrtf() function (PR #159615)

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+//===-- Utility class to test rsqrt[f|l] ------------------------*- C++ -*-===//
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overmighty wrote:

We support `float128` in MPFRWrapper now though. Could not this not be used for `rsqrtf128`?

https://github.com/llvm/llvm-project/pull/159615