1*bf2c3715SXin Li #include <iostream> 2*bf2c3715SXin Li #include <Eigen/Dense> 3*bf2c3715SXin Li 4*bf2c3715SXin Li using Eigen::MatrixXd; 5*bf2c3715SXin Li main()6*bf2c3715SXin Liint main() 7*bf2c3715SXin Li { 8*bf2c3715SXin Li MatrixXd m(2,2); 9*bf2c3715SXin Li m(0,0) = 3; 10*bf2c3715SXin Li m(1,0) = 2.5; 11*bf2c3715SXin Li m(0,1) = -1; 12*bf2c3715SXin Li m(1,1) = m(1,0) + m(0,1); 13*bf2c3715SXin Li std::cout << m << std::endl; 14*bf2c3715SXin Li } 15