1 Matrix3i m = Matrix3i::Random(); 2 cout << "Here is the matrix m:" << endl << m << endl; 3 cout << "Here is the symmetric matrix extracted from the upper part of m:" << endl 4 << Matrix3i(m.selfadjointView<Upper>()) << endl; 5 cout << "Here is the symmetric matrix extracted from the lower part of m:" << endl 6 << Matrix3i(m.selfadjointView<Lower>()) << endl; 7