/**
* Returns this number exponentiated to the given value.
*
* @param int $exponent The exponent.
*
* @return BigRational The result.
*
* @throws \InvalidArgumentException If the exponent is not in the range 0 to 1,000,000.
*/
public function power($exponent)
{
$exponent = (int) $exponent;
if ($exponent === 0) {
$one = BigInteger::one();
return new BigRational($one, $one, false);
}
if ($exponent === 1) {
return $this;
}
return new BigRational($this->numerator->power($exponent), $this->denominator->power($exponent), false);
}