/// @return double a random number distributed according to the receiver.
public override double Random()
{
if (_chiSquareDistribution == null)
{
_chiSquareDistribution = new ChiSquareDistribution(_dof - 1);
}
return(Generator.NextGaussian() * Math.Sqrt((_dof - 1) / _chiSquareDistribution.Random()));
}
/// @return double a random number distributed according to the receiver.
public override double Random()
{
if (_chiSquareDistribution1 == null)
{
_chiSquareDistribution1 = new ChiSquareDistribution(_dof1);
_chiSquareDistribution2 = new ChiSquareDistribution(_dof2);
}
return(_chiSquareDistribution1.Random() * _dof2
/ (_chiSquareDistribution2.Random() * _dof1));
}