add a noncopyable base class for decompositions

Eigen/src/Core/util/Meta.h

@@ -103,6 +103,21 @@ template<bool Condition, typename T> struct enable_if;
 template<typename T> struct enable_if<true,T>
 { typedef T type; };
 
+
+
+/** \internal
+  * A base class do disable default copy ctor and copy assignement operator.
+  */
+class noncopyable
+{
+  noncopyable(const noncopyable&);
+  const noncopyable& operator=(const noncopyable&);
+protected:
+  noncopyable() {}
+  ~noncopyable() {}
+};
+
+
 /** \internal
   * Convenient struct to get the result type of a unary or binary functor.
   *

Eigen/src/IterativeLinearSolvers/IncompleteLUT.h

@@ -51,7 +51,7 @@ namespace Eigen {
  * see http://www-users.cs.umn.edu/~saad/software/SPARSKIT/README for more details.
  */
 template <typename _Scalar>
-class IncompleteLUT
+class IncompleteLUT : internal::noncopyable
 {
     typedef _Scalar Scalar;
     typedef typename NumTraits<Scalar>::Real RealScalar;

Eigen/src/IterativeLinearSolvers/IterativeSolverBase.h

@@ -33,7 +33,7 @@ namespace Eigen {
   * \sa class SimplicialCholesky, DiagonalPreconditioner, IdentityPreconditioner
   */
 template< typename Derived>
-class IterativeSolverBase
+class IterativeSolverBase : internal::noncopyable
 {
 public:
   typedef typename internal::traits<Derived>::MatrixType MatrixType;

Eigen/src/SuperLUSupport/SuperLUSupport.h

@@ -303,7 +303,7 @@ MappedSparseMatrix<Scalar,Flags,Index> map_superlu(SluMatrix& sluMat)
   * \brief The base class for the direct and incomplete LU factorization of SuperLU
   */
 template<typename _MatrixType, typename Derived>
-class SuperLUBase
+class SuperLUBase : internal::noncopyable
 {
   public:
     typedef _MatrixType MatrixType;

Eigen/src/UmfPackSupport/UmfPackSupport.h

@@ -136,7 +136,7 @@ inline int umfpack_get_determinant(std::complex<double> *Mx, double *Ex, void *N
   * \sa \ref TutorialSparseDirectSolvers
   */
 template<typename _MatrixType>
-class UmfPackLU
+class UmfPackLU : internal::noncopyable
 {
   public:
     typedef _MatrixType MatrixType;