1 Vector2f v = Vector2f::Random(); 2 JacobiRotation<float> G; 3 G.makeGivens(v.x(), v.y()); 4 cout << "Here is the vector v:" << endl << v << endl; 5 v.applyOnTheLeft(0, 1, G.adjoint()); 6 cout << "Here is the vector J' * v:" << endl << v << endl; 7