[libc-commits] [libc] [libc] Extend fputil::sqrt to use floating point instructions for arm32. (PR #134499)

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lntue wrote:

> The `__builtin_elementwise_sqrt` seems to work properly, but that's clang only. https://godbolt.org/z/3s9z6G1a9.

Updated to use `__builtin_elementwise_sqrt` if available.

https://github.com/llvm/llvm-project/pull/134499