public void TestNormalDensity()
{
var input = 5.1;
var result = WaveMath.NormalDensity(input, 2, 1);
Assert.AreEqual(0.0032668190561999247, result);
input = 0;
result = WaveMath.NormalDensity(input, 2, 0);
Assert.IsTrue(double.IsNaN(result));
input = -10;
result = WaveMath.NormalDensity(input, 2, 0);
Assert.IsTrue(double.IsNaN(result));
}