1 #include <Eigen/Core> 2 #include <iostream> 3 using namespace Eigen; 4 using namespace std; 5 6 // define function to be applied coefficient-wise 7 double ramp(double x) 8 { 9 if (x > 0) 10 return x; 11 else 12 return 0; 13 } 14 15 int main(int, char**) 16 { 17 Matrix4d m1 = Matrix4d::Random(); 18 cout << m1 << endl << "becomes: " << endl << m1.unaryExpr(ptr_fun(ramp)) << endl; 19 return 0; 20 } 21
