linux-kernel-module-cheat/kernel_module/user/eigen_hello.cpp

/* Adapted from: https://eigen.tuxfamily.org/dox/GettingStarted.html */
#include <iostream>
#include <Eigen/Dense>
int main() {
	Eigen::MatrixXd m(2,2);
	m(0,0) = 3;
	m(1,0) = 2.5;
	m(0,1) = -1;
	m(1,1) = m(1,0) + m(0,1);
	std::cout << m << std::endl;
}