when the `f` exceed the float64 bound, this overflow check seems not correct. It should be put this check into for-range. <img width="984" alt="image" src="https://github.com/alecthomas/units/assets/9150170/fb8eb2c4-6541-4b6c-ac50-87b9ba7e2fe6">
when the

fexceed the float64 bound, this overflow check seems not correct.It should be put this check into for-range.