fn biased_fp_to_float<T: RawFloat>(x: BiasedFp) -> T {
    let mut word = x.f;
    word |= (x.e as u64) << T::MANTISSA_EXPLICIT_BITS;
    T::from_u64_bits(word)
}
Converts a `BiasedFp` to the closest machine float type.
sonic-number/src/lib.rs