diff --git a/Eigen/src/Core/CwiseUnaryOp.h b/Eigen/src/Core/CwiseUnaryOp.h
index 03011800c..e5a91ca04 100644
--- a/Eigen/src/Core/CwiseUnaryOp.h
+++ b/Eigen/src/Core/CwiseUnaryOp.h
@@ -56,13 +56,17 @@ struct ei_traits<CwiseUnaryOp<UnaryOp, MatrixType> >
   };
 };
 
+template<typename UnaryOp, typename MatrixType, typename StorageType>
+class CwiseUnaryOpImpl;
+
 template<typename UnaryOp, typename MatrixType>
 class CwiseUnaryOp : ei_no_assignment_operator,
-  public MatrixBase<CwiseUnaryOp<UnaryOp, MatrixType> >
+  public CwiseUnaryOpImpl<UnaryOp, MatrixType, typename ei_traits<MatrixType>::StorageType>
 {
   public:
 
-    EIGEN_GENERIC_PUBLIC_INTERFACE(CwiseUnaryOp)
+    typedef typename CwiseUnaryOpImpl<UnaryOp, MatrixType,typename ei_traits<MatrixType>::StorageType>::Base Base;
+    EIGEN_GENERIC_PUBLIC_INTERFACE_NEW(CwiseUnaryOp)
 
     inline CwiseUnaryOp(const MatrixType& mat, const UnaryOp& func = UnaryOp())
       : m_matrix(mat), m_functor(func) {}
@@ -70,28 +74,6 @@ class CwiseUnaryOp : ei_no_assignment_operator,
     EIGEN_STRONG_INLINE int rows() const { return m_matrix.rows(); }
     EIGEN_STRONG_INLINE int cols() const { return m_matrix.cols(); }
 
-    EIGEN_STRONG_INLINE const Scalar coeff(int row, int col) const
-    {
-      return m_functor(m_matrix.coeff(row, col));
-    }
-
-    template<int LoadMode>
-    EIGEN_STRONG_INLINE PacketScalar packet(int row, int col) const
-    {
-      return m_functor.packetOp(m_matrix.template packet<LoadMode>(row, col));
-    }
-
-    EIGEN_STRONG_INLINE const Scalar coeff(int index) const
-    {
-      return m_functor(m_matrix.coeff(index));
-    }
-
-    template<int LoadMode>
-    EIGEN_STRONG_INLINE PacketScalar packet(int index) const
-    {
-      return m_functor.packetOp(m_matrix.template packet<LoadMode>(index));
-    }
-
     /** \internal used for introspection */
     const UnaryOp& _functor() const { return m_functor; }
 
@@ -99,38 +81,52 @@ class CwiseUnaryOp : ei_no_assignment_operator,
     const typename ei_cleantype<typename MatrixType::Nested>::type&
     _expression() const { return m_matrix; }
 
+    const typename ei_cleantype<typename MatrixType::Nested>::type&
+    nestedExpression() const { return m_matrix; }
+
+    typename ei_cleantype<typename MatrixType::Nested>::type&
+    nestedExpression() { return m_matrix.const_cast_derived(); }
+
   protected:
     const typename MatrixType::Nested m_matrix;
     const UnaryOp m_functor;
 };
 
-/** \returns an expression of a custom coefficient-wise unary operator \a func of *this
-  *
-  * The template parameter \a CustomUnaryOp is the type of the functor
-  * of the custom unary operator.
-  *
-  * Example:
-  * \include class_CwiseUnaryOp.cpp
-  * Output: \verbinclude class_CwiseUnaryOp.out
-  *
-  * \sa class CwiseUnaryOp, class CwiseBinarOp, MatrixBase::operator-, Cwise::abs
-  */
-template<typename Derived>
-template<typename CustomUnaryOp>
-EIGEN_STRONG_INLINE const CwiseUnaryOp<CustomUnaryOp, Derived>
-MatrixBase<Derived>::unaryExpr(const CustomUnaryOp& func) const
+template<typename UnaryOp, typename MatrixType>
+class CwiseUnaryOpImpl<UnaryOp,MatrixType,Dense> : public MatrixBase<CwiseUnaryOp<UnaryOp, MatrixType> >
 {
-  return CwiseUnaryOp<CustomUnaryOp, Derived>(derived(), func);
-}
+    const typename ei_cleantype<typename MatrixType::Nested>::type& matrix() const
+    { return derived().nestedExpression(); }
+    typename ei_cleantype<typename MatrixType::Nested>::type& matrix()
+    { return derived().nestedExpression(); }
 
-/** \returns an expression of the opposite of \c *this
-  */
-template<typename Derived>
-EIGEN_STRONG_INLINE const CwiseUnaryOp<ei_scalar_opposite_op<typename ei_traits<Derived>::Scalar>,Derived>
-MatrixBase<Derived>::operator-() const
-{
-  return derived();
-}
+  public:
+
+    typedef CwiseUnaryOp<UnaryOp, MatrixType> Derived;
+    EIGEN_DENSE_PUBLIC_INTERFACE( Derived )
+
+    EIGEN_STRONG_INLINE const Scalar coeff(int row, int col) const
+    {
+      return derived()._functor()(matrix().coeff(row, col));
+    }
+
+    template<int LoadMode>
+    EIGEN_STRONG_INLINE PacketScalar packet(int row, int col) const
+    {
+      return derived()._functor().packetOp(matrix().template packet<LoadMode>(row, col));
+    }
+
+    EIGEN_STRONG_INLINE const Scalar coeff(int index) const
+    {
+      return derived()._functor()(matrix().coeff(index));
+    }
+
+    template<int LoadMode>
+    EIGEN_STRONG_INLINE PacketScalar packet(int index) const
+    {
+      return derived()._functor().packetOp(matrix().template packet<LoadMode>(index));
+    }
+};
 
 /** \returns an expression of the coefficient-wise absolute value of \c *this
   *
@@ -160,49 +156,6 @@ Cwise<ExpressionType>::abs2() const
   return _expression();
 }
 
-/** \returns an expression of the complex conjugate of \c *this.
-  *
-  * \sa adjoint() */
-template<typename Derived>
-EIGEN_STRONG_INLINE typename MatrixBase<Derived>::ConjugateReturnType
-MatrixBase<Derived>::conjugate() const
-{
-  return ConjugateReturnType(derived());
-}
-
-/** \returns a read-only expression of the real part of \c *this.
-  *
-  * \sa imag() */
-template<typename Derived>
-EIGEN_STRONG_INLINE typename MatrixBase<Derived>::RealReturnType
-MatrixBase<Derived>::real() const { return derived(); }
-
-/** \returns an read-only expression of the imaginary part of \c *this.
-  *
-  * \sa real() */
-template<typename Derived>
-EIGEN_STRONG_INLINE const typename MatrixBase<Derived>::ImagReturnType
-MatrixBase<Derived>::imag() const { return derived(); }
-
-/** \returns an expression of *this with the \a Scalar type casted to
-  * \a NewScalar.
-  *
-  * The template parameter \a NewScalar is the type we are casting the scalars to.
-  *
-  * \sa class CwiseUnaryOp
-  */
-template<typename Derived>
-template<typename NewType>
-EIGEN_STRONG_INLINE
-typename ei_cast_return_type<
-            Derived,
-            const CwiseUnaryOp<ei_scalar_cast_op<typename ei_traits<Derived>::Scalar, NewType>, Derived>
-          >::type
-MatrixBase<Derived>::cast() const
-{
-  return derived();
-}
-
 /** \returns an expression of the coefficient-wise exponential of *this.
   *
   * Example: \include Cwise_exp.cpp
@@ -231,47 +184,4 @@ Cwise<ExpressionType>::log() const
   return _expression();
 }
 
-
-/** \returns an expression of \c *this scaled by the scalar factor \a scalar */
-template<typename Derived>
-EIGEN_STRONG_INLINE const typename MatrixBase<Derived>::ScalarMultipleReturnType
-MatrixBase<Derived>::operator*(const Scalar& scalar) const
-{
-  return CwiseUnaryOp<ei_scalar_multiple_op<Scalar>, Derived>
-    (derived(), ei_scalar_multiple_op<Scalar>(scalar));
-}
-
-/** Overloaded for efficient real matrix times complex scalar value */
-template<typename Derived>
-EIGEN_STRONG_INLINE const CwiseUnaryOp<ei_scalar_multiple2_op<typename ei_traits<Derived>::Scalar,
-                                                              std::complex<typename ei_traits<Derived>::Scalar> >, Derived>
-MatrixBase<Derived>::operator*(const std::complex<Scalar>& scalar) const
-{
-  return CwiseUnaryOp<ei_scalar_multiple2_op<Scalar,std::complex<Scalar> >, Derived>
-    (*static_cast<const Derived*>(this), ei_scalar_multiple2_op<Scalar,std::complex<Scalar> >(scalar));
-}
-
-/** \returns an expression of \c *this divided by the scalar value \a scalar */
-template<typename Derived>
-EIGEN_STRONG_INLINE const CwiseUnaryOp<ei_scalar_quotient1_op<typename ei_traits<Derived>::Scalar>, Derived>
-MatrixBase<Derived>::operator/(const Scalar& scalar) const
-{
-  return CwiseUnaryOp<ei_scalar_quotient1_op<Scalar>, Derived>
-    (derived(), ei_scalar_quotient1_op<Scalar>(scalar));
-}
-
-template<typename Derived>
-EIGEN_STRONG_INLINE Derived&
-MatrixBase<Derived>::operator*=(const Scalar& other)
-{
-  return *this = *this * other;
-}
-
-template<typename Derived>
-EIGEN_STRONG_INLINE Derived&
-MatrixBase<Derived>::operator/=(const Scalar& other)
-{
-  return *this = *this / other;
-}
-
 #endif // EIGEN_CWISE_UNARY_OP_H
diff --git a/Eigen/src/Core/CwiseUnaryOps.h b/Eigen/src/Core/CwiseUnaryOps.h
new file mode 100644
index 000000000..205677a6a
--- /dev/null
+++ b/Eigen/src/Core/CwiseUnaryOps.h
@@ -0,0 +1,158 @@
+
+#ifndef EIGEN_PARSED_BY_DOXYGEN
+    /** \internal Represents a scalar multiple of a matrix */
+    typedef CwiseUnaryOp<ei_scalar_multiple_op<Scalar>, Derived> ScalarMultipleReturnType;
+    /** \internal Represents a quotient of a matrix by a scalar*/
+    typedef CwiseUnaryOp<ei_scalar_quotient1_op<Scalar>, Derived> ScalarQuotient1ReturnType;
+    /** \internal the return type of MatrixBase::conjugate() */
+    typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
+                        const CwiseUnaryOp<ei_scalar_conjugate_op<Scalar>, Derived>,
+                        const Derived&
+                     >::ret ConjugateReturnType;
+    /** \internal the return type of MatrixBase::real() const */
+    typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
+                        const CwiseUnaryOp<ei_scalar_real_op<Scalar>, Derived>,
+                        const Derived&
+                     >::ret RealReturnType;
+    /** \internal the return type of MatrixBase::real() */
+    typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
+                        CwiseUnaryView<ei_scalar_real_op<Scalar>, Derived>,
+                        Derived&
+                     >::ret NonConstRealReturnType;
+    /** \internal the return type of MatrixBase::imag() const */
+    typedef CwiseUnaryOp<ei_scalar_imag_op<Scalar>, Derived> ImagReturnType;
+    /** \internal the return type of MatrixBase::imag() */
+    typedef CwiseUnaryView<ei_scalar_imag_op<Scalar>, Derived> NonConstImagReturnType;
+#endif // not EIGEN_PARSED_BY_DOXYGEN
+
+    /** \returns an expression of the opposite of \c *this
+      */
+    EIGEN_STRONG_INLINE const CwiseUnaryOp<ei_scalar_opposite_op<typename ei_traits<Derived>::Scalar>,Derived>
+    operator-() const { return derived(); }
+
+    EIGEN_STRONG_INLINE Derived& operator*=(const Scalar& other)
+    { return *this = *this * other; }
+    EIGEN_STRONG_INLINE Derived& operator/=(const Scalar& other)
+    { return *this = *this / other; }
+
+    /** \returns an expression of \c *this scaled by the scalar factor \a scalar */
+    EIGEN_STRONG_INLINE const ScalarMultipleReturnType
+    operator*(const Scalar& scalar) const
+    {
+      return CwiseUnaryOp<ei_scalar_multiple_op<Scalar>, Derived>
+        (derived(), ei_scalar_multiple_op<Scalar>(scalar));
+    }
+
+    #ifdef EIGEN_PARSED_BY_DOXYGEN
+    const ScalarMultipleReturnType operator*(const RealScalar& scalar) const;
+    #endif
+
+    /** \returns an expression of \c *this divided by the scalar value \a scalar */
+    EIGEN_STRONG_INLINE const CwiseUnaryOp<ei_scalar_quotient1_op<typename ei_traits<Derived>::Scalar>, Derived>
+    operator/(const Scalar& scalar) const
+    {
+      return CwiseUnaryOp<ei_scalar_quotient1_op<Scalar>, Derived>
+        (derived(), ei_scalar_quotient1_op<Scalar>(scalar));
+    }
+
+    /** Overloaded for efficient real matrix times complex scalar value */
+    EIGEN_STRONG_INLINE const CwiseUnaryOp<ei_scalar_multiple2_op<Scalar,std::complex<Scalar> >, Derived>
+    operator*(const std::complex<Scalar>& scalar) const
+    {
+      return CwiseUnaryOp<ei_scalar_multiple2_op<Scalar,std::complex<Scalar> >, Derived>
+        (*static_cast<const Derived*>(this), ei_scalar_multiple2_op<Scalar,std::complex<Scalar> >(scalar));
+    }
+
+    inline friend const ScalarMultipleReturnType
+    operator*(const Scalar& scalar, const MatrixBase& matrix)
+    { return matrix*scalar; }
+
+    inline friend const CwiseUnaryOp<ei_scalar_multiple2_op<Scalar,std::complex<Scalar> >, Derived>
+    operator*(const std::complex<Scalar>& scalar, const MatrixBase& matrix)
+    { return matrix*scalar; }
+
+    /** \returns an expression of *this with the \a Scalar type casted to
+      * \a NewScalar.
+      *
+      * The template parameter \a NewScalar is the type we are casting the scalars to.
+      *
+      * \sa class CwiseUnaryOp
+      */
+    template<typename NewType>
+    typename ei_cast_return_type<Derived,const CwiseUnaryOp<ei_scalar_cast_op<typename ei_traits<Derived>::Scalar, NewType>, Derived> >::type
+    cast() const
+    {
+      return derived();
+    }
+
+    /** \returns an expression of the complex conjugate of \c *this.
+      *
+      * \sa adjoint() */
+    EIGEN_STRONG_INLINE ConjugateReturnType
+    conjugate() const
+    {
+      return ConjugateReturnType(derived());
+    }
+
+    /** \returns a read-only expression of the real part of \c *this.
+      *
+      * \sa imag() */
+    EIGEN_STRONG_INLINE RealReturnType
+    real() const { return derived(); }
+
+    /** \returns an read-only expression of the imaginary part of \c *this.
+      *
+      * \sa real() */
+    EIGEN_STRONG_INLINE const ImagReturnType
+    imag() const { return derived(); }
+
+    /** \returns an expression of a custom coefficient-wise unary operator \a func of *this
+      *
+      * The template parameter \a CustomUnaryOp is the type of the functor
+      * of the custom unary operator.
+      *
+      * Example:
+      * \include class_CwiseUnaryOp.cpp
+      * Output: \verbinclude class_CwiseUnaryOp.out
+      *
+      * \sa class CwiseUnaryOp, class CwiseBinarOp, MatrixBase::operator-, Cwise::abs
+      */
+    template<typename CustomUnaryOp>
+    EIGEN_STRONG_INLINE const CwiseUnaryOp<CustomUnaryOp, Derived>
+    unaryExpr(const CustomUnaryOp& func = CustomUnaryOp()) const
+    {
+      return CwiseUnaryOp<CustomUnaryOp, Derived>(derived(), func);
+    }
+
+    /** \returns an expression of a custom coefficient-wise unary operator \a func of *this
+      *
+      * The template parameter \a CustomUnaryOp is the type of the functor
+      * of the custom unary operator.
+      *
+      * Example:
+      * \include class_CwiseUnaryOp.cpp
+      * Output: \verbinclude class_CwiseUnaryOp.out
+      *
+      * \sa class CwiseUnaryOp, class CwiseBinarOp, MatrixBase::operator-, Cwise::abs
+      */
+    template<typename CustomViewOp>
+    EIGEN_STRONG_INLINE const CwiseUnaryView<CustomViewOp, Derived>
+    unaryViewExpr(const CustomViewOp& func = CustomViewOp()) const
+    {
+      return CwiseUnaryView<CustomViewOp, Derived>(derived(), func);
+    }
+
+    /** \returns a non const expression of the real part of \c *this.
+      *
+      * \sa imag() */
+    EIGEN_STRONG_INLINE NonConstRealReturnType
+    real() { return derived(); }
+
+    /** \returns a non const expression of the imaginary part of \c *this.
+      *
+      * \sa real() */
+    EIGEN_STRONG_INLINE NonConstImagReturnType
+    imag() { return derived(); }
+
+    const Cwise<Derived> cwise() const;
+    Cwise<Derived> cwise();
diff --git a/Eigen/src/Core/CwiseUnaryView.h b/Eigen/src/Core/CwiseUnaryView.h
index 580344379..b21fa56c6 100644
--- a/Eigen/src/Core/CwiseUnaryView.h
+++ b/Eigen/src/Core/CwiseUnaryView.h
@@ -52,12 +52,17 @@ struct ei_traits<CwiseUnaryView<ViewOp, MatrixType> >
   };
 };
 
+template<typename ViewOp, typename MatrixType, typename StorageType>
+class CwiseUnaryViewImpl;
+
 template<typename ViewOp, typename MatrixType>
-class CwiseUnaryView : public MatrixBase<CwiseUnaryView<ViewOp, MatrixType> >
+class CwiseUnaryView : ei_no_assignment_operator,
+  public CwiseUnaryViewImpl<ViewOp, MatrixType, typename ei_traits<MatrixType>::StorageType>
 {
   public:
 
-    EIGEN_GENERIC_PUBLIC_INTERFACE(CwiseUnaryView)
+    typedef typename CwiseUnaryViewImpl<ViewOp, MatrixType,typename ei_traits<MatrixType>::StorageType>::Base Base;
+    EIGEN_GENERIC_PUBLIC_INTERFACE_NEW(CwiseUnaryView)
 
     inline CwiseUnaryView(const MatrixType& mat, const ViewOp& func = ViewOp())
       : m_matrix(mat), m_functor(func) {}
@@ -67,25 +72,14 @@ class CwiseUnaryView : public MatrixBase<CwiseUnaryView<ViewOp, MatrixType> >
     EIGEN_STRONG_INLINE int rows() const { return m_matrix.rows(); }
     EIGEN_STRONG_INLINE int cols() const { return m_matrix.cols(); }
 
-    EIGEN_STRONG_INLINE const Scalar coeff(int row, int col) const
-    {
-      return m_functor(m_matrix.coeff(row, col));
-    }
+    /** \internal used for introspection */
+    const ViewOp& _functor() const { return m_functor; }
 
-    EIGEN_STRONG_INLINE const Scalar coeff(int index) const
-    {
-      return m_functor(m_matrix.coeff(index));
-    }
+    const typename ei_cleantype<typename MatrixType::Nested>::type&
+    nestedExpression() const { return m_matrix; }
 
-    EIGEN_STRONG_INLINE Scalar& coeffRef(int row, int col)
-    {
-      return m_functor(m_matrix.const_cast_derived().coeffRef(row, col));
-    }
-
-    EIGEN_STRONG_INLINE Scalar& coeffRef(int index)
-    {
-      return m_functor(m_matrix.const_cast_derived().coeffRef(index));
-    }
+    typename ei_cleantype<typename MatrixType::Nested>::type&
+    nestedExpression() { return m_matrix.const_cast_derived(); }
 
   protected:
     // FIXME changed from MatrixType::Nested because of a weird compilation error with sun CC
@@ -93,37 +87,40 @@ class CwiseUnaryView : public MatrixBase<CwiseUnaryView<ViewOp, MatrixType> >
     const ViewOp m_functor;
 };
 
-/** \returns an expression of a custom coefficient-wise unary operator \a func of *this
-  *
-  * The template parameter \a CustomUnaryOp is the type of the functor
-  * of the custom unary operator.
-  *
-  * Example:
-  * \include class_CwiseUnaryOp.cpp
-  * Output: \verbinclude class_CwiseUnaryOp.out
-  *
-  * \sa class CwiseUnaryOp, class CwiseBinarOp, MatrixBase::operator-, Cwise::abs
-  */
-template<typename Derived>
-template<typename CustomViewOp>
-EIGEN_STRONG_INLINE const CwiseUnaryView<CustomViewOp, Derived>
-MatrixBase<Derived>::unaryViewExpr(const CustomViewOp& func) const
+template<typename ViewOp, typename MatrixType>
+class CwiseUnaryViewImpl<ViewOp,MatrixType,Dense> : public MatrixBase<CwiseUnaryView<ViewOp, MatrixType> >
 {
-  return CwiseUnaryView<CustomViewOp, Derived>(derived(), func);
-}
+    const typename ei_cleantype<typename MatrixType::Nested>::type& matrix() const
+    { return derived().nestedExpression(); }
+    typename ei_cleantype<typename MatrixType::Nested>::type& matrix()
+    { return derived().nestedExpression(); }
+
+  public:
+
+    typedef CwiseUnaryView<ViewOp, MatrixType> Derived;
+    EIGEN_DENSE_PUBLIC_INTERFACE( Derived )
+
+    EIGEN_STRONG_INLINE const Scalar coeff(int row, int col) const
+    {
+      return derived()._functor()(matrix().coeff(row, col));
+    }
+
+    EIGEN_STRONG_INLINE const Scalar coeff(int index) const
+    {
+      return derived()._functor()(matrix().coeff(index));
+    }
+
+    EIGEN_STRONG_INLINE Scalar& coeffRef(int row, int col)
+    {
+      return derived()._functor()(matrix().const_cast_derived().coeffRef(row, col));
+    }
+
+    EIGEN_STRONG_INLINE Scalar& coeffRef(int index)
+    {
+      return derived()._functor()(matrix().const_cast_derived().coeffRef(index));
+    }
+};
 
-/** \returns a non const expression of the real part of \c *this.
-  *
-  * \sa imag() */
-template<typename Derived>
-EIGEN_STRONG_INLINE typename MatrixBase<Derived>::NonConstRealReturnType
-MatrixBase<Derived>::real() { return derived(); }
 
-/** \returns a non const expression of the imaginary part of \c *this.
-  *
-  * \sa real() */
-template<typename Derived>
-EIGEN_STRONG_INLINE typename MatrixBase<Derived>::NonConstImagReturnType
-MatrixBase<Derived>::imag() { return derived(); }
 
 #endif // EIGEN_CWISE_UNARY_VIEW_H
diff --git a/Eigen/src/Core/MatrixBase.h b/Eigen/src/Core/MatrixBase.h
index 17fdf10f2..55915d3e1 100644
--- a/Eigen/src/Core/MatrixBase.h
+++ b/Eigen/src/Core/MatrixBase.h
@@ -226,29 +226,6 @@ template<typename Derived> class MatrixBase
 
     /** \internal Represents a matrix with all coefficients equal to one another*/
     typedef CwiseNullaryOp<ei_scalar_constant_op<Scalar>,Derived> ConstantReturnType;
-    /** \internal Represents a scalar multiple of a matrix */
-    typedef CwiseUnaryOp<ei_scalar_multiple_op<Scalar>, Derived> ScalarMultipleReturnType;
-    /** \internal Represents a quotient of a matrix by a scalar*/
-    typedef CwiseUnaryOp<ei_scalar_quotient1_op<Scalar>, Derived> ScalarQuotient1ReturnType;
-    /** \internal the return type of MatrixBase::conjugate() */
-    typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
-                        const CwiseUnaryOp<ei_scalar_conjugate_op<Scalar>, Derived>,
-                        const Derived&
-                     >::ret ConjugateReturnType;
-    /** \internal the return type of MatrixBase::real() const */
-    typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
-                        const CwiseUnaryOp<ei_scalar_real_op<Scalar>, Derived>,
-                        const Derived&
-                     >::ret RealReturnType;
-    /** \internal the return type of MatrixBase::real() */
-    typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
-                        CwiseUnaryView<ei_scalar_real_op<Scalar>, Derived>,
-                        Derived&
-                     >::ret NonConstRealReturnType;
-    /** \internal the return type of MatrixBase::imag() const */
-    typedef CwiseUnaryOp<ei_scalar_imag_op<Scalar>, Derived> ImagReturnType;
-    /** \internal the return type of MatrixBase::imag() */
-    typedef CwiseUnaryView<ei_scalar_imag_op<Scalar>, Derived> NonConstImagReturnType;
     /** \internal the return type of MatrixBase::adjoint() */
     typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
                         CwiseUnaryOp<ei_scalar_conjugate_op<Scalar>, NestByValue<Eigen::Transpose<Derived> > >,
@@ -268,6 +245,7 @@ template<typename Derived> class MatrixBase
                   ei_traits<Derived>::ColsAtCompileTime> BasisReturnType;
 #endif // not EIGEN_PARSED_BY_DOXYGEN
 
+    #include "CwiseUnaryOps.h"
 
     /** Copies \a other into *this. \returns a reference to *this. */
     template<typename OtherDerived>
@@ -363,8 +341,6 @@ template<typename Derived> class MatrixBase
     Scalar& w();
 
 
-    const CwiseUnaryOp<ei_scalar_opposite_op<typename ei_traits<Derived>::Scalar>,Derived> operator-() const;
-
     template<typename OtherDerived>
     const CwiseBinaryOp<ei_scalar_sum_op<typename ei_traits<Derived>::Scalar>, Derived, OtherDerived>
     operator+(const MatrixBase<OtherDerived> &other) const;
@@ -378,27 +354,6 @@ template<typename Derived> class MatrixBase
     template<typename OtherDerived>
     Derived& operator-=(const MatrixBase<OtherDerived>& other);
 
-    Derived& operator*=(const Scalar& other);
-    Derived& operator/=(const Scalar& other);
-
-    const ScalarMultipleReturnType operator*(const Scalar& scalar) const;
-    #ifdef EIGEN_PARSED_BY_DOXYGEN
-    const ScalarMultipleReturnType operator*(const RealScalar& scalar) const;
-    #endif
-    const CwiseUnaryOp<ei_scalar_quotient1_op<typename ei_traits<Derived>::Scalar>, Derived>
-    operator/(const Scalar& scalar) const;
-
-    const CwiseUnaryOp<ei_scalar_multiple2_op<Scalar,std::complex<Scalar> >, Derived>
-    operator*(const std::complex<Scalar>& scalar) const;
-
-    inline friend const ScalarMultipleReturnType
-    operator*(const Scalar& scalar, const MatrixBase& matrix)
-    { return matrix*scalar; }
-
-    inline friend const CwiseUnaryOp<ei_scalar_multiple2_op<Scalar,std::complex<Scalar> >, Derived>
-    operator*(const std::complex<Scalar>& scalar, const MatrixBase& matrix)
-    { return matrix*scalar; }
-
     template<typename OtherDerived>
     const typename ProductReturnType<Derived,OtherDerived>::Type
     operator*(const MatrixBase<OtherDerived> &other) const;
@@ -592,13 +547,6 @@ template<typename Derived> class MatrixBase
     { return (cwise() != other).any(); }
 
 
-    template<typename NewType>
-    typename ei_cast_return_type<
-        Derived,
-        const CwiseUnaryOp<ei_scalar_cast_op<typename ei_traits<Derived>::Scalar, NewType>, Derived>
-      >::type
-    cast() const;
-
     /** \returns the matrix or vector obtained by evaluating this expression.
       *
       * Notice that in the case of a plain matrix or vector (not an expression) this function just returns
@@ -626,18 +574,6 @@ template<typename Derived> class MatrixBase
     inline const NestByValue<Derived> nestByValue() const;
 
 
-    ConjugateReturnType conjugate() const;
-    RealReturnType real() const;
-    NonConstRealReturnType real();
-    const ImagReturnType imag() const;
-    NonConstImagReturnType imag();
-
-    template<typename CustomUnaryOp>
-    const CwiseUnaryOp<CustomUnaryOp, Derived> unaryExpr(const CustomUnaryOp& func = CustomUnaryOp()) const;
-
-    template<typename CustomViewOp>
-    const CwiseUnaryView<CustomViewOp, Derived> unaryViewExpr(const CustomViewOp& func = CustomViewOp()) const;
-
     template<typename CustomBinaryOp, typename OtherDerived>
     const CwiseBinaryOp<CustomBinaryOp, Derived, OtherDerived>
     binaryExpr(const MatrixBase<OtherDerived> &other, const CustomBinaryOp& func = CustomBinaryOp()) const;
@@ -671,9 +607,6 @@ template<typename Derived> class MatrixBase
     { return *static_cast<Derived*>(const_cast<MatrixBase*>(this)); }
 #endif // not EIGEN_PARSED_BY_DOXYGEN
 
-    const Cwise<Derived> cwise() const;
-    Cwise<Derived> cwise();
-
     inline const WithFormat<Derived> format(const IOFormat& fmt) const;
 
 /////////// Array module ///////////
diff --git a/Eigen/src/Sparse/SparseCwiseUnaryOp.h b/Eigen/src/Sparse/SparseCwiseUnaryOp.h
index 9a73374bd..ea9d444ae 100644
--- a/Eigen/src/Sparse/SparseCwiseUnaryOp.h
+++ b/Eigen/src/Sparse/SparseCwiseUnaryOp.h
@@ -25,55 +25,42 @@
 #ifndef EIGEN_SPARSE_CWISE_UNARY_OP_H
 #define EIGEN_SPARSE_CWISE_UNARY_OP_H
 
-template<typename UnaryOp, typename MatrixType>
-struct ei_traits<SparseCwiseUnaryOp<UnaryOp, MatrixType> > : ei_traits<MatrixType>
-{
-  typedef typename ei_result_of<
-                     UnaryOp(typename MatrixType::Scalar)
-                   >::type Scalar;
-  typedef typename MatrixType::Nested MatrixTypeNested;
-  typedef typename ei_unref<MatrixTypeNested>::type _MatrixTypeNested;
-  enum {
-    CoeffReadCost = _MatrixTypeNested::CoeffReadCost + ei_functor_traits<UnaryOp>::Cost
-  };
-};
+// template<typename UnaryOp, typename MatrixType>
+// struct ei_traits<SparseCwiseUnaryOp<UnaryOp, MatrixType> > : ei_traits<MatrixType>
+// {
+//   typedef typename ei_result_of<
+//                      UnaryOp(typename MatrixType::Scalar)
+//                    >::type Scalar;
+//   typedef typename MatrixType::Nested MatrixTypeNested;
+//   typedef typename ei_unref<MatrixTypeNested>::type _MatrixTypeNested;
+//   enum {
+//     CoeffReadCost = _MatrixTypeNested::CoeffReadCost + ei_functor_traits<UnaryOp>::Cost
+//   };
+// };
 
 template<typename UnaryOp, typename MatrixType>
-class SparseCwiseUnaryOp : ei_no_assignment_operator,
-  public SparseMatrixBase<SparseCwiseUnaryOp<UnaryOp, MatrixType> >
+class CwiseUnaryOpImp<UnaryOp,MatrixType,Sparse>
+  : public SparseMatrixBase<CwiseUnaryOp<UnaryOp, MatrixType> >
 {
   public:
 
     class InnerIterator;
 //     typedef typename ei_unref<LhsNested>::type _LhsNested;
 
-    EIGEN_SPARSE_GENERIC_PUBLIC_INTERFACE(SparseCwiseUnaryOp)
-
-    inline SparseCwiseUnaryOp(const MatrixType& mat, const UnaryOp& func = UnaryOp())
-      : m_matrix(mat), m_functor(func) {}
-
-    EIGEN_STRONG_INLINE int rows() const { return m_matrix.rows(); }
-    EIGEN_STRONG_INLINE int cols() const { return m_matrix.cols(); }
-
-//     EIGEN_STRONG_INLINE const typename MatrixType::Nested& _matrix() const { return m_matrix; }
-//     EIGEN_STRONG_INLINE const UnaryOp& _functor() const { return m_functor; }
-
-  protected:
-    const typename MatrixType::Nested m_matrix;
-    const UnaryOp m_functor;
+    typedef CwiseUnaryOp<UnaryOp, MatrixType> Derived;
+    EIGEN_SPARSE_PUBLIC_INTERFACE(Derived)
 };
 
-
 template<typename UnaryOp, typename MatrixType>
-class SparseCwiseUnaryOp<UnaryOp,MatrixType>::InnerIterator
+class CwiseUnaryOpImpl<UnaryOp,MatrixType,Sparse>::InnerIterator
 {
-    typedef typename SparseCwiseUnaryOp::Scalar Scalar;
-    typedef typename ei_traits<SparseCwiseUnaryOp>::_MatrixTypeNested _MatrixTypeNested;
+    typedef typename CwiseUnaryOpImpl::Scalar Scalar;
+    typedef typename ei_traits<CwiseUnaryOpImpl>::_MatrixTypeNested _MatrixTypeNested;
     typedef typename _MatrixTypeNested::InnerIterator MatrixTypeIterator;
   public:
 
     EIGEN_STRONG_INLINE InnerIterator(const SparseCwiseUnaryOp& unaryOp, int outer)
-      : m_iter(unaryOp.m_matrix,outer), m_functor(unaryOp.m_functor)
+      : m_iter(unaryOp.nestedExpression(),outer), m_functor(unaryOp._functor())
     {}
 
     EIGEN_STRONG_INLINE InnerIterator& operator++()
@@ -92,6 +79,49 @@ class SparseCwiseUnaryOp<UnaryOp,MatrixType>::InnerIterator
     const UnaryOp m_functor;
 };
 
+template<typename ViewOp, typename MatrixType>
+class CwiseUnaryOpImp<ViewOp,MatrixType,Sparse>
+  : public SparseMatrixBase<CwiseUnaryView<ViewOp, MatrixType> >
+{
+  public:
+
+    class InnerIterator;
+//     typedef typename ei_unref<LhsNested>::type _LhsNested;
+
+    typedef CwiseUnaryView<ViewOp, MatrixType> Derived;
+    EIGEN_SPARSE_PUBLIC_INTERFACE(Derived)
+};
+
+template<typename ViewOp, typename MatrixType>
+class CwiseUnaryViewImpl<ViewOp,MatrixType,Sparse>::InnerIterator
+{
+    typedef typename CwiseUnaryViewImpl::Scalar Scalar;
+    typedef typename ei_traits<SparseCwiseUnaryOp>::_MatrixTypeNested _MatrixTypeNested;
+    typedef typename _MatrixTypeNested::InnerIterator MatrixTypeIterator;
+  public:
+
+    EIGEN_STRONG_INLINE InnerIterator(const CwiseUnaryViewImpl& unaryView, int outer)
+      : m_iter(unaryView.nestedExpression(),outer), m_functor(unaryView._functor())
+    {}
+
+    EIGEN_STRONG_INLINE InnerIterator& operator++()
+    { ++m_iter; return *this; }
+
+    EIGEN_STRONG_INLINE Scalar value() const { return m_functor(m_iter.value()); }
+
+    EIGEN_STRONG_INLINE int index() const { return m_iter.index(); }
+    EIGEN_STRONG_INLINE int row() const { return m_iter.row(); }
+    EIGEN_STRONG_INLINE int col() const { return m_iter.col(); }
+
+    EIGEN_STRONG_INLINE operator bool() const { return m_iter; }
+
+  protected:
+    MatrixTypeIterator m_iter;
+    const UnaryOp m_functor;
+};
+
+
+/*
 template<typename Derived>
 template<typename CustomUnaryOp>
 EIGEN_STRONG_INLINE const SparseCwiseUnaryOp<CustomUnaryOp, Derived>
@@ -178,6 +208,6 @@ SparseMatrixBase<Derived>::operator/=(const Scalar& other)
     for (typename Derived::InnerIterator i(derived(),j); i; ++i)
       i.valueRef() /= other;
   return derived();
-}
+}*/
 
 #endif // EIGEN_SPARSE_CWISE_UNARY_OP_H
diff --git a/Eigen/src/Sparse/SparseMatrixBase.h b/Eigen/src/Sparse/SparseMatrixBase.h
index 043fe07b2..cc13c329e 100644
--- a/Eigen/src/Sparse/SparseMatrixBase.h
+++ b/Eigen/src/Sparse/SparseMatrixBase.h
@@ -97,21 +97,23 @@ template<typename Derived> class SparseMatrixBase : public AnyMatrixBase<Derived
       #endif
     };
 
-    /** \internal the return type of MatrixBase::conjugate() */
-    typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
-                        const SparseCwiseUnaryOp<ei_scalar_conjugate_op<Scalar>, Derived>,
-                        const Derived&
-                     >::ret ConjugateReturnType;
-    /** \internal the return type of MatrixBase::real() */
-    typedef SparseCwiseUnaryOp<ei_scalar_real_op<Scalar>, Derived> RealReturnType;
-    /** \internal the return type of MatrixBase::imag() */
-    typedef SparseCwiseUnaryOp<ei_scalar_imag_op<Scalar>, Derived> ImagReturnType;
+    /* \internal the return type of MatrixBase::conjugate() */
+//     typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
+//                         const SparseCwiseUnaryOp<ei_scalar_conjugate_op<Scalar>, Derived>,
+//                         const Derived&
+//                      >::ret ConjugateReturnType;
+    /* \internal the return type of MatrixBase::real() */
+//     typedef SparseCwiseUnaryOp<ei_scalar_real_op<Scalar>, Derived> RealReturnType;
+    /* \internal the return type of MatrixBase::imag() */
+//     typedef SparseCwiseUnaryOp<ei_scalar_imag_op<Scalar>, Derived> ImagReturnType;
     /** \internal the return type of MatrixBase::adjoint() */
     typedef typename ei_meta_if<NumTraits<Scalar>::IsComplex,
                         SparseCwiseUnaryOp<ei_scalar_conjugate_op<Scalar>, SparseNestByValue<Eigen::Transpose<Derived> > >,
                         Transpose<Derived>
                      >::ret AdjointReturnType;
 
+    #include "../Core/CwiseUnaryOps.h"
+
 #ifndef EIGEN_PARSED_BY_DOXYGEN
     /** This is the "real scalar" type; if the \a Scalar type is already real numbers
       * (e.g. int, float or double) then \a RealScalar is just the same as \a Scalar. If
@@ -284,7 +286,7 @@ template<typename Derived> class SparseMatrixBase : public AnyMatrixBase<Derived
       return s;
     }
 
-    const SparseCwiseUnaryOp<ei_scalar_opposite_op<typename ei_traits<Derived>::Scalar>,Derived> operator-() const;
+//     const SparseCwiseUnaryOp<ei_scalar_opposite_op<typename ei_traits<Derived>::Scalar>,Derived> operator-() const;
 
     template<typename OtherDerived>
     const SparseCwiseBinaryOp<ei_scalar_sum_op<typename ei_traits<Derived>::Scalar>, Derived, OtherDerived>
@@ -302,17 +304,17 @@ template<typename Derived> class SparseMatrixBase : public AnyMatrixBase<Derived
 //     template<typename Lhs,typename Rhs>
 //     Derived& operator+=(const Flagged<Product<Lhs,Rhs,CacheFriendlyProduct>, 0, EvalBeforeNestingBit | EvalBeforeAssigningBit>& other);
 
-    Derived& operator*=(const Scalar& other);
-    Derived& operator/=(const Scalar& other);
+//     Derived& operator*=(const Scalar& other);
+//     Derived& operator/=(const Scalar& other);
 
-    const SparseCwiseUnaryOp<ei_scalar_multiple_op<typename ei_traits<Derived>::Scalar>, Derived>
-    operator*(const Scalar& scalar) const;
-    const SparseCwiseUnaryOp<ei_scalar_quotient1_op<typename ei_traits<Derived>::Scalar>, Derived>
-    operator/(const Scalar& scalar) const;
+//     const SparseCwiseUnaryOp<ei_scalar_multiple_op<typename ei_traits<Derived>::Scalar>, Derived>
+//     operator*(const Scalar& scalar) const;
+//     const SparseCwiseUnaryOp<ei_scalar_quotient1_op<typename ei_traits<Derived>::Scalar>, Derived>
+//     operator/(const Scalar& scalar) const;
 
-    inline friend const SparseCwiseUnaryOp<ei_scalar_multiple_op<typename ei_traits<Derived>::Scalar>, Derived>
-    operator*(const Scalar& scalar, const SparseMatrixBase& matrix)
-    { return matrix*scalar; }
+//     inline friend const SparseCwiseUnaryOp<ei_scalar_multiple_op<typename ei_traits<Derived>::Scalar>, Derived>
+//     operator*(const Scalar& scalar, const SparseMatrixBase& matrix)
+//     { return matrix*scalar; }
 
 
     // sparse * sparse
@@ -543,12 +545,12 @@ template<typename Derived> class SparseMatrixBase : public AnyMatrixBase<Derived
     inline const SparseNestByValue<Derived> nestByValue() const;
 
 
-    ConjugateReturnType conjugate() const;
-    const RealReturnType real() const;
-    const ImagReturnType imag() const;
+//     ConjugateReturnType conjugate() const;
+//     const RealReturnType real() const;
+//     const ImagReturnType imag() const;
 
-    template<typename CustomUnaryOp>
-    const SparseCwiseUnaryOp<CustomUnaryOp, Derived> unaryExpr(const CustomUnaryOp& func = CustomUnaryOp()) const;
+//     template<typename CustomUnaryOp>
+//     const SparseCwiseUnaryOp<CustomUnaryOp, Derived> unaryExpr(const CustomUnaryOp& func = CustomUnaryOp()) const;
 
 //     template<typename CustomBinaryOp, typename OtherDerived>
 //     const CwiseBinaryOp<CustomBinaryOp, Derived, OtherDerived>
@@ -572,8 +574,8 @@ template<typename Derived> class SparseMatrixBase : public AnyMatrixBase<Derived
 //     void visit(Visitor& func) const;
 
 
-    const SparseCwise<Derived> cwise() const;
-    SparseCwise<Derived> cwise();
+//     const SparseCwise<Derived> cwise() const;
+//     SparseCwise<Derived> cwise();
 
 //     inline const WithFormat<Derived> format(const IOFormat& fmt) const;