/**
* Returns a random float
*
* @return float The random variate.
*/
public function rvs()
{
return $this->calculator->getRvs($this->k, $this->theta);
}
/**
* Returns a random float between $alpha and $alpha plus $beta
*
* @param float $alpha The minimum parameter. Default 0.0
* @param float $beta The maximum parameter. Default 1.0
* @return float The random variate.
*/
public function getRvs($alpha = 1, $beta = 1)
{
$x = $this->gamma->getRvs($alpha, 1);
$y = $this->gamma->getRvs($beta, 1);
return $x / ($x + $y);
}
