public Rayleigh(double sigma)
{
_normalDistribution1 = new Normal(0d, sigma);
_normalDistribution2 = new Normal(0d, sigma);
}
public Students(double nu)
{
_nu = nu;
_normalDistribution = new Normal(0d, 1d);
_chiSquareDistribution = new ChiSquare(_nu);
}
public Gamma(double shape, double scale)
{
_shape = shape;
_scale = scale;
_normal = new Normal();
_gamma = new Gamma(shape + 1.0, 1.0);
}