public void ValidateInverseCumulativeDistribution(double scale, double x)
{
var n = new Rayleigh(scale);
double cdf = 1.0 - Math.Exp(-x * x / (2.0 * scale * scale));
Assert.AreEqual(x, n.InverseCumulativeDistribution(cdf));
Assert.AreEqual(x, Rayleigh.InvCDF(scale, cdf));
}