doc/snippets/SelfAdjointView_operatorNorm.cpp

MatrixXd ones = MatrixXd::Ones(3, 3);
cout << "The operator norm of the 3x3 matrix of ones is " << ones.selfadjointView<Lower>().operatorNorm() << 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 2010-05-24 17:43:50 +01:00			`MatrixXd ones = MatrixXd::Ones(3, 3);`
			`cout << "The operator norm of the 3x3 matrix of ones is " << ones.selfadjointView<Lower>().operatorNorm() << endl;`