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/Tutorial_ArrayClass_interop.cpp b/doc/examples/Tutorial_ArrayClass_interop.cpp
new file mode 100644
index 0000000..371f070
--- /dev/null
+++ b/doc/examples/Tutorial_ArrayClass_interop.cpp
@@ -0,0 +1,22 @@
+#include <Eigen/Dense>
+#include <iostream>
+
+using namespace Eigen;
+using namespace std;
+
+int main()
+{
+ MatrixXf m(2,2);
+ MatrixXf n(2,2);
+ MatrixXf result(2,2);
+
+ m << 1,2,
+ 3,4;
+ n << 5,6,
+ 7,8;
+
+ result = (m.array() + 4).matrix() * m;
+ cout << "-- Combination 1: --" << endl << result << endl << endl;
+ result = (m.array() * n.array()).matrix() * m;
+ cout << "-- Combination 2: --" << endl << result << endl << endl;
+}