eigen/doc/snippets/SelfAdjointView_eigenvalues.cpp

MatrixXd ones = MatrixXd::Ones(3,3);
VectorXd eivals = ones.selfadjointView<Lower>().eigenvalues();
cout << "The eigenvalues of the 3x3 matrix of ones are:" << endl << eivals << endl;
Update eigenvalues() and operatorNorm() methods in MatrixBase. * use SelfAdjointView instead of Eigen2's SelfAdjoint flag. * add tests and documentation. * allow eigenvalues() for non-selfadjoint matrices. * they no longer depend only on SelfAdjointEigenSolver, so move them to a separate file 2010-05-25 00:43:50 +08:00			`MatrixXd ones = MatrixXd::Ones(3,3);`
			`VectorXd eivals = ones.selfadjointView<Lower>().eigenvalues();`
			`cout << "The eigenvalues of the 3x3 matrix of ones are:" << endl << eivals << endl;`