/**
* Returns a random float
*
* @return float The random variate.
*/
public function rvs()
{
return $this->calculator->getRvs($this->k);
}
/**
* Returns a random float between $d1 and $d1 plus $d2
*
* @param float $d1 Degrees of freedom 1. Default 1.0
* @param float $d2 Degrees of freedom 2. Default 1.0
* @return float The random variate.
*/
public function getRvs($d1 = 1, $d2 = 1)
{
$x = $this->chi->getRvs($d1);
$y = $this->chi->getRvs($d2);
return $x / $d1 / ($y / $d2);
}