ADD: added other eigen lib

libs/eigen/doc/examples/TutorialLinAlgSVDSolve.cpp

@@ -1,15 +1,12 @@
 #include <iostream>
 #include <Eigen/Dense>
 
-using namespace std;
-using namespace Eigen;
-
 int main()
 {
-   MatrixXf A = MatrixXf::Random(3, 2);
-   cout << "Here is the matrix A:\n" << A << endl;
-   VectorXf b = VectorXf::Random(3);
-   cout << "Here is the right hand side b:\n" << b << endl;
-   cout << "The least-squares solution is:\n"
-        << A.bdcSvd(ComputeThinU | ComputeThinV).solve(b) << endl;
+   Eigen::MatrixXf A = Eigen::MatrixXf::Random(3, 2);
+   std::cout << "Here is the matrix A:\n" << A << std::endl;
+   Eigen::VectorXf b = Eigen::VectorXf::Random(3);
+   std::cout << "Here is the right hand side b:\n" << b << std::endl;
+   std::cout << "The least-squares solution is:\n"
+        << A.template bdcSvd<Eigen::ComputeThinU | Eigen::ComputeThinV>().solve(b) << std::endl;
 }