/**
* @param ValueObjectInterface $object
* @return int
*/
public function spaceship(ValueObjectInterface $object)
{
return $this->getValue() < $object->getValue() ? -1 : ($this->getValue() > $object->getValue() ? 1 : 0);
}
/**
* @param ValueObjectInterface $object
* @return static
*/
public function exponentiation(ValueObjectInterface $object)
{
return new static(pow($this->getValue(), $object->getValue()));
}