Accord.Tests.Math.QrDecompositionTest.InverseTest C# (CSharp) Method

        public void InverseTest()
        {
            int n = 5;

            var I = Matrix.Identity(n);

            for (int i = 0; i < n; i++)
            {
                for (int j = 0; j < n; j++)
                {
                    double[,] value = Matrix.Magic(n);

                    var target = new QrDecomposition(value);
                    var solution = target.Solve(I);
                    var inverse = target.Inverse();
                    var reverse = target.Reverse();

                    Assert.IsTrue(Matrix.IsEqual(solution, inverse, 1e-4));
                    Assert.IsTrue(Matrix.IsEqual(value, reverse, 1e-4));
                }
            }
        }