CBPCalc::functionRand

private function functionRand($args)
{
	$ar = $this->ArrgsToArray($args);
	$min = (int)array_shift($ar);
	$max = (int)array_shift($ar);
	if (!$max)
	{
		$max = mt_getrandmax();
	}

	return mt_rand($min, $max);
}