initial commit

third_party/eigen/doc/examples/QuickStart_example2_dynamic.cpp

@@ -0,0 +1,14 @@
+#include <iostream>
+#include <Eigen/Dense>
+
+using Eigen::MatrixXd;
+using Eigen::VectorXd;
+
+int main() {
+  MatrixXd m = MatrixXd::Random(3, 3);
+  m = (m + MatrixXd::Constant(3, 3, 1.2)) * 50;
+  std::cout << "m =" << std::endl << m << std::endl;
+  VectorXd v(3);
+  v << 1, 2, 3;
+  std::cout << "m * v =" << std::endl << m * v << std::endl;
+}