/**
* @param Number $x
*
* @throws \DomainException
*
* @return \Cubiche\Domain\System\DecimalInfinite
*/
protected function powSpecialCases(Number $x)
{
if ($x->isPositive()) {
if ($this->isPositive()) {
return $this;
}
if ($x->isInfinite()) {
throw new \DomainException('The pow operation is not defined between "-INF" and "INF"');
}
} elseif ($x->isNegative()) {
return Decimal::fromNative(0);
}
return;
}
public function testSetDefaultScale()
{
$this->if($scale = 8)->when(Decimal::setDefaultScale($scale))->then->variable(Decimal::defaultScale())->isEqualTo($scale)->if($invalidScale = 8.1)->then->exception(function () use($invalidScale) {
Decimal::setDefaultScale($invalidScale);
})->isInstanceOf(\InvalidArgumentException::class)->if($negativeScale = -2)->then->exception(function () use($negativeScale) {
Decimal::setDefaultScale($negativeScale);
})->isInstanceOf(\InvalidArgumentException::class);
}
