diff options
Diffstat (limited to 'eigen/doc/snippets/Tridiagonalization_diagonal.cpp')
| -rw-r--r-- | eigen/doc/snippets/Tridiagonalization_diagonal.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/eigen/doc/snippets/Tridiagonalization_diagonal.cpp b/eigen/doc/snippets/Tridiagonalization_diagonal.cpp new file mode 100644 index 0000000..6eec821 --- /dev/null +++ b/eigen/doc/snippets/Tridiagonalization_diagonal.cpp @@ -0,0 +1,13 @@ +MatrixXcd X = MatrixXcd::Random(4,4); +MatrixXcd A = X + X.adjoint(); +cout << "Here is a random self-adjoint 4x4 matrix:" << endl << A << endl << endl; + +Tridiagonalization<MatrixXcd> triOfA(A); +MatrixXd T = triOfA.matrixT(); +cout << "The tridiagonal matrix T is:" << endl << T << endl << endl; + +cout << "We can also extract the diagonals of T directly ..." << endl; +VectorXd diag = triOfA.diagonal(); +cout << "The diagonal is:" << endl << diag << endl; +VectorXd subdiag = triOfA.subDiagonal(); +cout << "The subdiagonal is:" << endl << subdiag << endl; |