public void ValidateDensityLn(double mu, double lambda, double x, double p) { var n = new InverseGaussian(mu, lambda); AssertHelpers.AlmostEqualRelative(p, n.DensityLn(x), precision); AssertHelpers.AlmostEqualRelative(p, InverseGaussian.PDFLn(mu, lambda, x), precision); }