private static function _cleanComplex($complexNumber) {
		if ($complexNumber{0} == '+') $complexNumber = substr($complexNumber,1);
		if ($complexNumber{0} == '0') $complexNumber = substr($complexNumber,1);
		if ($complexNumber{0} == '.') $complexNumber = '0'.$complexNumber;
		if ($complexNumber{0} == '+') $complexNumber = substr($complexNumber,1);
		return $complexNumber;
	}