| Brian Silverman | 72890c2 | 2015-09-19 14:37:37 -0400 | [diff] [blame] | 1 | MatrixXcd X = MatrixXcd::Random(4,4); |
| 2 | MatrixXcd A = X + X.adjoint(); |
| 3 | cout << "Here is a random self-adjoint 4x4 matrix:" << endl << A << endl << endl; |
| 4 | |
| 5 | Tridiagonalization<MatrixXcd> triOfA(A); |
| 6 | MatrixXd T = triOfA.matrixT(); |
| 7 | cout << "The tridiagonal matrix T is:" << endl << T << endl << endl; |
| 8 | |
| 9 | cout << "We can also extract the diagonals of T directly ..." << endl; |
| 10 | VectorXd diag = triOfA.diagonal(); |
| 11 | cout << "The diagonal is:" << endl << diag << endl; |
| 12 | VectorXd subdiag = triOfA.subDiagonal(); |
| 13 | cout << "The subdiagonal is:" << endl << subdiag << endl; |