class_CwiseUnaryOp_ptrfun.cpp
68bb631292e1master

class_CwiseUnaryOp_ptrfun.cpp
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			#include <Eigen/Core>
			#include <iostream>
			using namespace Eigen;
			using namespace std;

			// define function to be applied coefficient-wise
			double ramp(double x)
			{
			if (x > 0)
			return x;
			else
			return 0;
			}

			int main(int, char**)
			{
			Matrix4d m1 = Matrix4d::Random();
			cout << m1 << endl << "becomes: " << endl << m1.unaryExpr(ptr_fun(ramp)) << endl;
			return 0;
			}