public function assertComplexEquals($expected, $actual, $delta = 0)
{
if ($expected[0] === '#') {
// Expecting an error, so we do a straight string comparison
if ($expected === $actual) {
return true;
}
$this->_errorMessage = 'Expected Error: ' . $actual . ' !== ' . $expected;
return false;
}
$expectedComplex = new Complex($expected);
$actualComplex = new Complex($actual);
if (!is_numeric($actualComplex->getReal()) || !is_numeric($expectedComplex->getReal())) {
if ($actualComplex->getReal() !== $expectedComplex->getReal()) {
$this->_errorMessage = 'Mismatched String: ' . $actualComplex->getReal() . ' !== ' . $expectedComplex->getReal();
return false;
}
return true;
}
if ($actualComplex->getReal() < $expectedComplex->getReal() - $delta || $actualComplex->getReal() > $expectedComplex->getReal() + $delta) {
$this->_errorMessage = 'Mismatched Real part: ' . $actualComplex->getReal() . ' != ' . $expectedComplex->getReal();
return false;
}
if ($actualComplex->getImaginary() < $expectedComplex->getImaginary() - $delta || $actualComplex->getImaginary() > $expectedComplex->getImaginary() + $delta) {
$this->_errorMessage = 'Mismatched Imaginary part: ' . $actualComplex->getImaginary() . ' != ' . $expectedComplex->getImaginary();
return false;
}
if ($actualComplex->getSuffix() !== $actualComplex->getSuffix()) {
$this->_errorMessage = 'Mismatched Suffix: ' . $actualComplex->getSuffix() . ' != ' . $expectedComplex->getSuffix();
return false;
}
return true;
}
/**
* Returns the quotient of this complex number
* and the given complex number.
*
* @param object Complex $c The given complex number.
* @return object Complex The quotient.
*/
public function div(Complex $c)
{
$denom = $c->getReal() * $c->getReal() - $c->getImag() * $c->getImag();
return new Complex(($this->getReal() * $c->getReal() - $this->getImag() * $c->getImag()) / $denom, ($this->getImag() * $c->getReal() - $this->getReal() * $c->getImag()) / $denom);
}