Squashed 'third_party/eigen/' content from commit 61d72f6
Change-Id: Iccc90fa0b55ab44037f018046d2fcffd90d9d025
git-subtree-dir: third_party/eigen
git-subtree-split: 61d72f6383cfa842868c53e30e087b0258177257
diff --git a/doc/examples/class_CwiseBinaryOp.cpp b/doc/examples/class_CwiseBinaryOp.cpp
new file mode 100644
index 0000000..682af46
--- /dev/null
+++ b/doc/examples/class_CwiseBinaryOp.cpp
@@ -0,0 +1,18 @@
+#include <Eigen/Core>
+#include <iostream>
+using namespace Eigen;
+using namespace std;
+
+// define a custom template binary functor
+template<typename Scalar> struct MakeComplexOp {
+ EIGEN_EMPTY_STRUCT_CTOR(MakeComplexOp)
+ typedef complex<Scalar> result_type;
+ complex<Scalar> operator()(const Scalar& a, const Scalar& b) const { return complex<Scalar>(a,b); }
+};
+
+int main(int, char**)
+{
+ Matrix4d m1 = Matrix4d::Random(), m2 = Matrix4d::Random();
+ cout << m1.binaryExpr(m2, MakeComplexOp<double>()) << endl;
+ return 0;
+}