linux-kernel-module-cheat/userland/libs/eigen/hello.cpp

// https://cirosantilli.com/linux-kernel-module-cheat#eigen
// 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;
}