public function testAbsReturnsAbsoluteValue()
{
$r1 = new RationalType(new IntType(1), new IntType(2));
$r2 = new RationalType(new IntType(-1), new IntType(2));
$r3 = new RationalType(new IntType(1), new IntType(-2));
$this->assertEquals($r1, $r1->abs());
$this->assertEquals($r1, $r2->abs());
$this->assertEquals($r1, $r3->abs());
}
/**
* @param RationalType $radius
* @param RationalType $sin
*
* @return array
*
* @throws InvalidTypeException
*/
private static function getImaginaryPartsFromRadiusAndSin(RationalType $radius, RationalType $sin)
{
return array(TypeFactory::create('int', $radius->numerator()->get() * $sin->numerator()->get()), TypeFactory::create('int', $radius->denominator()->get() * $sin->denominator()->get()));
}
/**
* Rational sqrt
*
* @param RationalType $a operand
*
* @return RationalType result
*/
public function rationalSqrt(RationalType $a)
{
$num = sqrt($a->numerator()->get());
$den = sqrt($a->denominator()->get());
return $this->rationalDiv(RationalTypeFactory::fromFloat($num), RationalTypeFactory::fromFloat($den));
}
