Encog.MathUtil.Matrices.Matrix.equals C# (CSharp) Method

        public bool equals(Matrix matrix, int precision)
        {
            if (precision < 0)
            {
                throw new MatrixError("Precision can't be a negative number.");
            }

            double test = Math.Pow(10.0, precision);
            if (double.IsInfinity(test) || (test > long.MaxValue))
            {
                throw new MatrixError("Precision of " + precision
                                      + " decimal places is not supported.");
            }

            precision = (int) Math.Pow(10, precision);

            double[][] otherMatrix = matrix.Data;
            for (int r = 0; r < Rows; r++)
            {
                for (int c = 0; c < Cols; c++)
                {
                    if ((long) (this.matrix[r][c]*precision) != (long) (otherMatrix[r][c]*precision))
                    {
                        return false;
                    }
                }
            }

            return true;
        }

        public void MatrixEqualsPrecision()
        {
            double[][] m1 =
            {
                new[] { 1.1234, 2.123 },
                new[] {  3.123, 4.123 }
            };

            double[][] m2 =
            {
                new[] { 1.123, 2.123 },
                new[] { 3.123, 4.123 }
            };

            var matrix1 = new Matrix(m1);
            var matrix2 = new Matrix(m2);

            Assert.IsTrue(matrix1.equals(matrix2, 3));
            Assert.IsFalse(matrix1.equals(matrix2, 4));

            double[][] m3 =
            {
                new[] { 1.1, 2.1 },
                new[] { 3.1, 4.1 }
            };

            double[][] m4 =
            {
                new[] { 1.2, 2.1 },
                new[] { 3.1, 4.1 }
            };

            var matrix3 = new Matrix(m3);
            var matrix4 = new Matrix(m4);

            Assert.IsTrue(matrix3.equals(matrix4, 0));
            Assert.IsFalse(matrix3.equals(matrix4, 1));

            try
            {
                matrix3.equals(matrix4, -1);
                Assert.IsTrue(false);
            }
            catch (MatrixError)
            {
            }

            try
            {
                matrix3.equals(matrix4, 19);
                Assert.IsTrue(false);
            }
            catch (MatrixError)
            {
            }
        }