1 MatrixXi m(2,2); 2 m << 1, 0, 3 1, 1; 4 cout << "Comparing m with identity matrix:" << endl; 5 cout << m.cwiseEqual(MatrixXi::Identity(2,2)) << endl; 6 int count = m.cwiseEqual(MatrixXi::Identity(2,2)).count(); 7 cout << "Number of coefficients that are equal: " << count << endl; 8