From 44861dcbfeee041223c4aac1ee075e92fa4daa01 Mon Sep 17 00:00:00 2001 From: Stanislaw Halik Date: Sun, 18 Sep 2016 12:42:15 +0200 Subject: update --- eigen/doc/snippets/Tridiagonalization_decomposeInPlace.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 eigen/doc/snippets/Tridiagonalization_decomposeInPlace.cpp (limited to 'eigen/doc/snippets/Tridiagonalization_decomposeInPlace.cpp') 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; -- cgit v1.2.3