public static UInt64 FromFixedPoint32(UInt32 mantissa, int numDigits)
{
// TODO: Unsigned comparison could be slightly faster, maybe
return(numDigits + (Int32.MinValue + BiasedExponentMaxValue - BaseExponent) > (Int32.MinValue + BiasedExponentMaxValue)
? NativeImpl.fromFixedPointU32(mantissa, numDigits)
: FromFixedPointFastUnsignedUnchecked(mantissa, numDigits));
}