1 #include <Eigen/Dense>
2 #include <iostream>
3 
4 using namespace std;
5 using namespace Eigen;
6 
main()7 int main()
8 {
9   ArrayXXf a(2,2);
10 
11   a << 1,2,
12        3,4;
13 
14   cout << "(a > 0).all()   = " << (a > 0).all() << endl;
15   cout << "(a > 0).any()   = " << (a > 0).any() << endl;
16   cout << "(a > 0).count() = " << (a > 0).count() << endl;
17   cout << endl;
18   cout << "(a > 2).all()   = " << (a > 2).all() << endl;
19   cout << "(a > 2).any()   = " << (a > 2).any() << endl;
20   cout << "(a > 2).count() = " << (a > 2).count() << endl;
21 }
22