Function reset_ref

tests/test_eigen_matrix.cpp:25–31

// (1-based) row/column number.
template <typename M>
void reset_ref(M &x) {
    for (int i = 0; i < x.rows(); i++) {
        for (int j = 0; j < x.cols(); j++) {
            x(i, j) = 11 + 10 * i + j;
        }
    }
}

// Returns a static, column-major matrix
Eigen::MatrixXd &get_cm() {