| // SPDX-FileCopyrightText: The Eigen Authors | |
| // SPDX-License-Identifier: MPL-2.0 | |
| Matrix4d X = Matrix4d::Random(4, 4); | |
| Matrix4d A = X + X.transpose(); | |
| cout << "Here is a random symmetric 4x4 matrix:" << endl << A << endl; | |
| Tridiagonalization<Matrix4d> triOfA(A); | |
| Matrix4d pm = triOfA.packedMatrix(); | |
| cout << "The packed matrix M is:" << endl << pm << endl; | |
| cout << "The diagonal and subdiagonal corresponds to the matrix T, which is:" << endl << triOfA.matrixT() << endl; |