public void ValidateCumulativeDistribution(double mu, double lambda, double x, double f)
{
var n = new InverseGaussian(mu, lambda);
AssertHelpers.AlmostEqualRelative(f, n.CumulativeDistribution(x), precision);
AssertHelpers.AlmostEqualRelative(f, InverseGaussian.CDF(mu, lambda, x), precision);
}
