[libc-commits] [libc] [libc][stdfix] Implement fixed point `countlsfx` functions in llvm-libc (PR #125356)

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https://github.com/lntue requested changes to this pull request.

LGTM after removing the `padding_on_unsigned_fixed_point` related changes, and fixing some formatting issues, especially missing extra empty lines at the end of the files and header 80-col alignment.

https://github.com/llvm/llvm-project/pull/125356