public void ToDoubleTest() { float[,] matrix = { { 2.1f, 5.2f }, { 0.1f, -0.2f } }; double[,] expected = { { 2.1, 5.2 }, { 0.1, -0.2 } }; double[,] actual = Matrix.ToDouble(matrix); Assert.IsTrue(expected.IsEqual(actual, 1e-6)); } #endregion