diff options
Diffstat (limited to 'eigen/doc/snippets/Tridiagonalization_decomposeInPlace.cpp')
| -rw-r--r-- | eigen/doc/snippets/Tridiagonalization_decomposeInPlace.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/eigen/doc/snippets/Tridiagonalization_decomposeInPlace.cpp b/eigen/doc/snippets/Tridiagonalization_decomposeInPlace.cpp new file mode 100644 index 0000000..93dcfca --- /dev/null +++ b/eigen/doc/snippets/Tridiagonalization_decomposeInPlace.cpp @@ -0,0 +1,10 @@ +MatrixXd X = MatrixXd::Random(5,5); +MatrixXd A = X + X.transpose(); +cout << "Here is a random symmetric 5x5 matrix:" << endl << A << endl << endl; + +VectorXd diag(5); +VectorXd subdiag(4); +internal::tridiagonalization_inplace(A, diag, subdiag, true); +cout << "The orthogonal matrix Q is:" << endl << A << endl; +cout << "The diagonal of the tridiagonal matrix T is:" << endl << diag << endl; +cout << "The subdiagonal of the tridiagonal matrix T is:" << endl << subdiag << endl; |