def helper_frexp(f, unit):
    if (not unit.is_unity()):
        raise UnitTypeError("Can only apply '{0}' function to unscaled dimensionless quantities".format(f.__name__))
    return ([None], (None, None))
def helper_frexp(f, unit):
    if (not unit.is_unity()):
        raise UnitTypeError("Can only apply '{0}' function to unscaled dimensionless quantities".format(f.__name__))
    return ([None], (None, None))