public void JacobiAmDoubleTest()
{
for (int i = 0; i < jacobiData.Length; i += 5)
{
var z = jacobiData[i];
var m = jacobiData[i + 1];
var sn = jacobiData[i + 3];
var ex = Math.Asin(sn);
var am = Jacobi.am(z, m);
var err = Math.Abs(am - ex) / Math.Abs(ex);
Assert.IsTrue(err < 1e-14);
var f = Jacobi.amDouble(m);
var am2 = f(z);
Assert.AreEqual(am, am2);
}
}