Accord.Tests.Math.CDF97Test.FWT2DTest C# (CSharp) Method

        public void FWT2DTest()
        {
            double[,] x = 
            {
                { 0,  1,  2,  3 },
                { 4,  5,  6,  7 }, 
                { 8,  9, 10, 11 }, 
                {12, 13, 14, 15 }
            };

            double[,] expected = 
            {
   		        {  1.297637585669648,  3.484779276810484, 0.033728238667008574, 0.43254352928579837 },
                { 10.046204350232994, 12.233346041373833, 0.033728245672272984, 0.43254353629106429 },
                {  0.134912951550852,  0.134912953302168, 0.000000000135036058, 0.00000000045438059	},
                {  1.730174114026011,  1.730174115777326, 0.000000001412414811,	0.00000000173175807 },
            };

            int levels = 1;

            double[,] actual = CDF97.FWT97(x, levels);

            Assert.IsTrue(Matrix.IsEqual(expected, actual, 1e-5));

            actual = CDF97.IWT97(x, levels);

            Assert.IsTrue(Matrix.IsEqual(x, actual, 0.001));

        }
    }