1#include <iostream>
2#include <Eigen/Dense>
3
4using namespace std;
5int main()
6{
7  Eigen::Matrix2d mat;
8  mat << 1, 2,
9         3, 4;
10  cout << "Here is mat.sum():       " << mat.sum()       << endl;
11  cout << "Here is mat.prod():      " << mat.prod()      << endl;
12  cout << "Here is mat.mean():      " << mat.mean()      << endl;
13  cout << "Here is mat.minCoeff():  " << mat.minCoeff()  << endl;
14  cout << "Here is mat.maxCoeff():  " << mat.maxCoeff()  << endl;
15  cout << "Here is mat.trace():     " << mat.trace()     << endl;
16}
17