public void JacobiDnComplexArgTest() { var z = new[] { new Complex(0.0115779438837883, 0.00215513498962569), new Complex(0.0251305156397967, -0.0159972042786677), new Complex(2.12623597863526, 0.480192562215063), new Complex(-1.8128943757431, 0.175402508876567), new Complex(0.974889810203627, 0.317370944403016), }; var m = new[] { .82872474670, .95465479750, .41588039490, .79913716820, .22263345920, }; var ans = new[] { "0.9999463821545492-0.0000206762130171 i", "0.9998206008771541+0.0003836693444763 i", "0.7479880904783000+0.0534965402190790 i", "0.4777309286723279+0.0277602955990134 i", "0.9203769973939489-0.0354146592336434 i", }; for (int i = 0; i < z.Length; i++) { var dn = Jacobi.dn(z[i], m[i]); var ex = Parse(ans[i]); Assert.IsTrue(Complex.Abs(dn - ex) < 1e-15); var f = Jacobi.dnComplex(m[i]); dn = f(z[i]); Assert.IsTrue(Complex.Abs(dn - ex) < 1e-15); } }