1 MatrixXi m(2,2);
2 m << 1, 0,
3      1, 1;
4 cout << "Comparing m with identity matrix:" << endl;
5 cout << m.cwiseNotEqual(MatrixXi::Identity(2,2)) << endl;
6 int count = m.cwiseNotEqual(MatrixXi::Identity(2,2)).count();
7 cout << "Number of coefficients that are not equal: " << count << endl;
8