1*bf2c3715SXin Liint main() 2*bf2c3715SXin Li{ 3*bf2c3715SXin Li Eigen::VectorXd vec(4); 4*bf2c3715SXin Li vec << 1, 2, 4, 8; 5*bf2c3715SXin Li Eigen::MatrixXd mat; 6*bf2c3715SXin Li mat = makeCirculant(vec); 7*bf2c3715SXin Li std::cout << mat << std::endl; 8*bf2c3715SXin Li} 9