libm has no such intrinsics as `logf16` and `roundf16`. Discovered in https://github.com/rust-lang/rust/pull/148206#issuecomment-3728270321.
libm has no such intrinsics as
logf16androundf16. Discovered in rust-lang/rust#148206 (comment).