move eigen values related stuff of the QR module to a new EigenSolver module.

- perhaps we can find a better name ?
- note that the QR module still includes the EigenSolver module for compatibility

test/eigensolver_complex.cpp

@@ -23,7 +23,7 @@
 // Eigen. If not, see <http://www.gnu.org/licenses/>.
 
 #include "main.h"
-#include <Eigen/QR>
+#include <Eigen/EigenSolver>
 #include <Eigen/LU>
 
 template<typename MatrixType> void eigensolver(const MatrixType& m)

test/eigensolver_generic.cpp

@@ -23,7 +23,7 @@
 // Eigen. If not, see <http://www.gnu.org/licenses/>.
 
 #include "main.h"
-#include <Eigen/QR>
+#include <Eigen/EigenSolver>
 
 #ifdef HAS_GSL
 #include "gsl_helper.h"

test/eigensolver_selfadjoint.cpp

@@ -23,7 +23,7 @@
 // Eigen. If not, see <http://www.gnu.org/licenses/>.
 
 #include "main.h"
-#include <Eigen/QR>
+#include <Eigen/EigenSolver>
 
 #ifdef HAS_GSL
 #include "gsl_helper.h"

test/product_notemporary.cpp

@@ -71,8 +71,6 @@ template<typename MatrixType> void product_notemporary(const MatrixType& m)
   VERIFY_EVALUATION_COUNT( m3 = (m1 * m2.adjoint()), 1);
   VERIFY_EVALUATION_COUNT( m3.noalias() = m1 * m2.adjoint(), 0);
 
-  // NOTE in this case the slow product is used:
-  // FIXME:
   VERIFY_EVALUATION_COUNT( m3.noalias() = s1 * (m1 * m2.transpose()), 0);
 
   VERIFY_EVALUATION_COUNT( m3.noalias() = s1 * m1 * s2 * m2.adjoint(), 0);