public void SubtractionTest1()
        {
            DoubleMatrix matrix = new Double[, ] {
                { 1F, 2F, 3F },
                { 2F, 3F, 4F }
            };
            Double       scalar   = 3F;
            DoubleMatrix expected = new Double[, ] {
                { -2F, -1F, 0F },
                { -1F, 0F, 1F }
            };
            DoubleMatrix actual;

            actual = DoubleMatrix_Accessor.Subtraction(matrix, scalar);
            Assert.AreEqual(expected, actual);
        }
        public void SubtractionTest()
        {
            DoubleMatrix matrix1 = new Double[, ] {
                { 1F, 2F, 3F },
                { 2F, 3F, 4F }
            };
            DoubleMatrix matrix2 = new Double[, ] {
                { 4F, 3F, 2F },
                { 3F, 2F, 1F }
            };
            DoubleMatrix expected = new Double[, ] {
                { -3F, -1F, 1F },
                { -1F, 1F, 3F }
            };

            DoubleMatrix actual = DoubleMatrix_Accessor.Subtraction(matrix1, matrix2);

            Assert.AreEqual(expected, actual);
        }