1*bf2c3715SXin Li #include <Eigen/Core> 2*bf2c3715SXin Li #include <iostream> 3*bf2c3715SXin Li using namespace Eigen; 4*bf2c3715SXin Li using namespace std; 5*bf2c3715SXin Li 6*bf2c3715SXin Li // define a custom template unary functor 7*bf2c3715SXin Li template<typename Scalar> 8*bf2c3715SXin Li struct CwiseClampOp { CwiseClampOpCwiseClampOp9*bf2c3715SXin Li CwiseClampOp(const Scalar& inf, const Scalar& sup) : m_inf(inf), m_sup(sup) {} operator ()CwiseClampOp10*bf2c3715SXin Li const Scalar operator()(const Scalar& x) const { return x<m_inf ? m_inf : (x>m_sup ? m_sup : x); } 11*bf2c3715SXin Li Scalar m_inf, m_sup; 12*bf2c3715SXin Li }; 13*bf2c3715SXin Li main(int,char **)14*bf2c3715SXin Liint main(int, char**) 15*bf2c3715SXin Li { 16*bf2c3715SXin Li Matrix4d m1 = Matrix4d::Random(); 17*bf2c3715SXin Li cout << m1 << endl << "becomes: " << endl << m1.unaryExpr(CwiseClampOp<double>(-0.5,0.5)) << endl; 18*bf2c3715SXin Li return 0; 19*bf2c3715SXin Li } 20