1 #include <Eigen/Core> 2 #include <iostream> 3 using namespace Eigen; 4 using namespace std; 5 6 // define a custom template binary functor 7 template<typename Scalar> struct MakeComplexOp { 8 EIGEN_EMPTY_STRUCT_CTOR(MakeComplexOp) 9 typedef complex<Scalar> result_type; operator ()MakeComplexOp10 complex<Scalar> operator()(const Scalar& a, const Scalar& b) const { return complex<Scalar>(a,b); } 11 }; 12 main(int,char **)13int main(int, char**) 14 { 15 Matrix4d m1 = Matrix4d::Random(), m2 = Matrix4d::Random(); 16 cout << m1.binaryExpr(m2, MakeComplexOp<double>()) << endl; 17 return 0; 18 } 19