Renamed PlainMatrixType to PlainObject (Array != Matrix).

Renamed ReturnByValue::ReturnMatrixType ReturnByValue::ReturnType (again, Array != Matrix).

15 files changed, 62 insertions, 63 deletions

diff --git a/Eigen/src/Core/DenseStorageBase.h b/Eigen/src/Core/DenseStorageBase.h
index 530ddcd07..6245b8007 100644
--- a/Eigen/src/Core/DenseStorageBase.h
+++ b/Eigen/src/Core/DenseStorageBase.h
@@ -44,7 +44,7 @@ class DenseStorageBase : public _Base<Derived>
   public:
     enum { Options = _Options };
     typedef _Base<Derived> Base;
-    typedef typename Base::PlainMatrixType PlainMatrixType;
+    typedef typename Base::PlainObject PlainObject;
     typedef typename Base::Scalar Scalar;
     typedef typename Base::PacketScalar PacketScalar;
     using Base::RowsAtCompileTime;
@@ -544,7 +544,7 @@ struct ei_conservative_resize_like_impl
   {
     if (_this.rows() == rows && _this.cols() == cols) return;
     EIGEN_STATIC_ASSERT_DYNAMIC_SIZE(Derived)
-    typename Derived::PlainMatrixType tmp(rows,cols);
+    typename Derived::PlainObject tmp(rows,cols);
     const int common_rows = std::min(rows, _this.rows());
     const int common_cols = std::min(cols, _this.cols());
     tmp.block(0,0,common_rows,common_cols) = _this.block(0,0,common_rows,common_cols);
@@ -563,7 +563,7 @@ struct ei_conservative_resize_like_impl
     EIGEN_STATIC_ASSERT_DYNAMIC_SIZE(Derived)
     EIGEN_STATIC_ASSERT_DYNAMIC_SIZE(OtherDerived)
 
-    typename Derived::PlainMatrixType tmp(other);
+    typename Derived::PlainObject tmp(other);
     const int common_rows = std::min(tmp.rows(), _this.rows());
     const int common_cols = std::min(tmp.cols(), _this.cols());
     tmp.block(0,0,common_rows,common_cols) = _this.block(0,0,common_rows,common_cols);
@@ -577,7 +577,7 @@ struct ei_conservative_resize_like_impl<Derived,OtherDerived,true>
   static void run(DenseBase<Derived>& _this, int size)
   {
     if (_this.size() == size) return;
-    typename Derived::PlainMatrixType tmp(size);
+    typename Derived::PlainObject tmp(size);
     const int common_size = std::min<int>(_this.size(),size);
     tmp.segment(0,common_size) = _this.segment(0,common_size);
     _this.derived().swap(tmp);
@@ -588,7 +588,7 @@ struct ei_conservative_resize_like_impl<Derived,OtherDerived,true>
     if (_this.rows() == other.rows() && _this.cols() == other.cols()) return;
 
     // segment(...) will check whether Derived/OtherDerived are vectors!
-    typename Derived::PlainMatrixType tmp(other);
+    typename Derived::PlainObject tmp(other);
     const int common_size = std::min<int>(_this.size(),tmp.size());
     tmp.segment(0,common_size) = _this.segment(0,common_size);
     _this.derived().swap(tmp);
diff --git a/Eigen/src/Core/Dot.h b/Eigen/src/Core/Dot.h
index f0c520b1f..201bd23ca 100644
--- a/Eigen/src/Core/Dot.h
+++ b/Eigen/src/Core/Dot.h
@@ -299,7 +299,7 @@ inline typename NumTraits<typename ei_traits<Derived>::Scalar>::Real MatrixBase<
   * \sa norm(), normalize()
   */
 template<typename Derived>
-inline const typename MatrixBase<Derived>::PlainMatrixType
+inline const typename MatrixBase<Derived>::PlainObject
 MatrixBase<Derived>::normalized() const
 {
   typedef typename ei_nested<Derived>::type Nested;
diff --git a/Eigen/src/Core/EigenBase.h b/Eigen/src/Core/EigenBase.h
index 8b302b663..cf1ce4376 100644
--- a/Eigen/src/Core/EigenBase.h
+++ b/Eigen/src/Core/EigenBase.h
@@ -37,7 +37,7 @@
   */
 template<typename Derived> struct EigenBase
 {
-//   typedef typename ei_plain_matrix_type<Derived>::type PlainMatrixType;
+//   typedef typename ei_plain_matrix_type<Derived>::type PlainObject;
 
   /** \returns a reference to the derived object */
   Derived& derived() { return *static_cast<Derived*>(this); }
@@ -61,7 +61,7 @@ template<typename Derived> struct EigenBase
   {
     // This is the default implementation,
     // derived class can reimplement it in a more optimized way.
-    typename Dest::PlainMatrixType res(rows(),cols());
+    typename Dest::PlainObject res(rows(),cols());
     evalTo(res);
     dst += res;
   }
@@ -71,7 +71,7 @@ template<typename Derived> struct EigenBase
   {
     // This is the default implementation,
     // derived class can reimplement it in a more optimized way.
-    typename Dest::PlainMatrixType res(rows(),cols());
+    typename Dest::PlainObject res(rows(),cols());
     evalTo(res);
     dst -= res;
   }
diff --git a/Eigen/src/Core/Flagged.h b/Eigen/src/Core/Flagged.h
index 7f42a1e73..0044fe7cb 100644
--- a/Eigen/src/Core/Flagged.h
+++ b/Eigen/src/Core/Flagged.h
@@ -109,7 +109,7 @@ template<typename ExpressionType, unsigned int Added, unsigned int Removed> clas
     const ExpressionType& _expression() const { return m_matrix; }
 
     template<typename OtherDerived>
-    typename ExpressionType::PlainMatrixType solveTriangular(const MatrixBase<OtherDerived>& other) const;
+    typename ExpressionType::PlainObject solveTriangular(const MatrixBase<OtherDerived>& other) const;
 
     template<typename OtherDerived>
     void solveTriangularInPlace(const MatrixBase<OtherDerived>& other) const;
diff --git a/Eigen/src/Core/Matrix.h b/Eigen/src/Core/Matrix.h
index 1c43340a6..44a0ef7d1 100644
--- a/Eigen/src/Core/Matrix.h
+++ b/Eigen/src/Core/Matrix.h
@@ -139,7 +139,7 @@ class Matrix
 
     EIGEN_DENSE_PUBLIC_INTERFACE(Matrix)
 
-    typedef typename Base::PlainMatrixType PlainMatrixType;
+    typedef typename Base::PlainObject PlainObject;
 
     enum { NeedsToAlign = (!(Options&DontAlign))
                           && SizeAtCompileTime!=Dynamic && ((sizeof(Scalar)*SizeAtCompileTime)%16)==0 };
diff --git a/Eigen/src/Core/MatrixBase.h b/Eigen/src/Core/MatrixBase.h
index 122a2271b..9c62163ba 100644
--- a/Eigen/src/Core/MatrixBase.h
+++ b/Eigen/src/Core/MatrixBase.h
@@ -121,7 +121,7 @@ template<typename Derived> class MatrixBase
       *
       * This is not necessarily exactly the return type of eval(). In the case of plain matrices,
       * the return type of eval() is a const reference to a matrix, not a matrix! It is however guaranteed
-      * that the return type of eval() is either PlainMatrixType or const PlainMatrixType&.
+      * that the return type of eval() is either PlainObject or const PlainObject&.
       */
     typedef Matrix<typename ei_traits<Derived>::Scalar,
                 ei_traits<Derived>::RowsAtCompileTime,
@@ -129,8 +129,7 @@ template<typename Derived> class MatrixBase
                 AutoAlign | (ei_traits<Derived>::Flags&RowMajorBit ? RowMajor : ColMajor),
                 ei_traits<Derived>::MaxRowsAtCompileTime,
                 ei_traits<Derived>::MaxColsAtCompileTime
-          > PlainMatrixType;
-    // typedef typename ei_plain_matrix_type<Derived>::type PlainMatrixType;
+          > PlainObject;
 
 #ifndef EIGEN_PARSED_BY_DOXYGEN
     /** \internal Represents a matrix with all coefficients equal to one another*/
@@ -212,7 +211,7 @@ template<typename Derived> class MatrixBase
     RealScalar stableNorm() const;
     RealScalar blueNorm() const;
     RealScalar hypotNorm() const;
-    const PlainMatrixType normalized() const;
+    const PlainObject normalized() const;
     void normalize();
 
     const AdjointReturnType adjoint() const;
@@ -301,9 +300,9 @@ template<typename Derived> class MatrixBase
 
 /////////// LU module ///////////
 
-    const FullPivLU<PlainMatrixType> fullPivLu() const;
-    const PartialPivLU<PlainMatrixType> partialPivLu() const;
-    const PartialPivLU<PlainMatrixType> lu() const;
+    const FullPivLU<PlainObject> fullPivLu() const;
+    const PartialPivLU<PlainObject> partialPivLu() const;
+    const PartialPivLU<PlainObject> lu() const;
     const ei_inverse_impl<Derived> inverse() const;
     template<typename ResultType>
     void computeInverseAndDetWithCheck(
@@ -322,29 +321,29 @@ template<typename Derived> class MatrixBase
 
 /////////// Cholesky module ///////////
 
-    const LLT<PlainMatrixType>  llt() const;
-    const LDLT<PlainMatrixType> ldlt() const;
+    const LLT<PlainObject>  llt() const;
+    const LDLT<PlainObject> ldlt() const;
 
 /////////// QR module ///////////
 
-    const HouseholderQR<PlainMatrixType> householderQr() const;
-    const ColPivHouseholderQR<PlainMatrixType> colPivHouseholderQr() const;
-    const FullPivHouseholderQR<PlainMatrixType> fullPivHouseholderQr() const;
+    const HouseholderQR<PlainObject> householderQr() const;
+    const ColPivHouseholderQR<PlainObject> colPivHouseholderQr() const;
+    const FullPivHouseholderQR<PlainObject> fullPivHouseholderQr() const;
 
     EigenvaluesReturnType eigenvalues() const;
     RealScalar operatorNorm() const;
 
 /////////// SVD module ///////////
 
-    SVD<PlainMatrixType> svd() const;
+    SVD<PlainObject> svd() const;
 
 /////////// Geometry module ///////////
 
     template<typename OtherDerived>
-    PlainMatrixType cross(const MatrixBase<OtherDerived>& other) const;
+    PlainObject cross(const MatrixBase<OtherDerived>& other) const;
     template<typename OtherDerived>
-    PlainMatrixType cross3(const MatrixBase<OtherDerived>& other) const;
-    PlainMatrixType unitOrthogonal(void) const;
+    PlainObject cross3(const MatrixBase<OtherDerived>& other) const;
+    PlainObject unitOrthogonal(void) const;
     Matrix<Scalar,3,1> eulerAngles(int a0, int a1, int a2) const;
     const ScalarMultipleReturnType operator*(const UniformScaling<Scalar>& s) const;
     enum {
diff --git a/Eigen/src/Core/PermutationMatrix.h b/Eigen/src/Core/PermutationMatrix.h
index 2d97c9c38..fcd2e46cc 100644
--- a/Eigen/src/Core/PermutationMatrix.h
+++ b/Eigen/src/Core/PermutationMatrix.h
@@ -280,7 +280,7 @@ operator*(const PermutationMatrix<SizeAtCompileTime, MaxSizeAtCompileTime> &perm
 template<typename PermutationType, typename MatrixType, int Side>
 struct ei_traits<ei_permut_matrix_product_retval<PermutationType, MatrixType, Side> >
 {
-  typedef typename MatrixType::PlainMatrixType ReturnMatrixType;
+  typedef typename MatrixType::PlainObject ReturnType;
 };
 
 template<typename PermutationType, typename MatrixType, int Side>
diff --git a/Eigen/src/Core/ProductBase.h b/Eigen/src/Core/ProductBase.h
index 481e7c760..789aecfb6 100644
--- a/Eigen/src/Core/ProductBase.h
+++ b/Eigen/src/Core/ProductBase.h
@@ -88,7 +88,7 @@ class ProductBase : public MatrixBase<Derived>
 
   public:
 
-    typedef typename Base::PlainMatrixType PlainMatrixType;
+    typedef typename Base::PlainObject PlainObject;
 
     ProductBase(const Lhs& lhs, const Rhs& rhs)
       : m_lhs(lhs), m_rhs(rhs)
@@ -116,8 +116,8 @@ class ProductBase : public MatrixBase<Derived>
     const _LhsNested& lhs() const { return m_lhs; }
     const _RhsNested& rhs() const { return m_rhs; }
 
-    // Implicit convertion to the nested type (trigger the evaluation of the product)
-    operator const PlainMatrixType& () const
+    // Implicit conversion to the nested type (trigger the evaluation of the product)
+    operator const PlainObject& () const
     {
       m_result.resize(m_lhs.rows(), m_rhs.cols());
       this->evalTo(m_result);
@@ -139,7 +139,7 @@ class ProductBase : public MatrixBase<Derived>
     const LhsNested m_lhs;
     const RhsNested m_rhs;
 
-    mutable PlainMatrixType m_result;
+    mutable PlainObject m_result;
 
   private:
 
@@ -152,10 +152,10 @@ class ProductBase : public MatrixBase<Derived>
 
 // here we need to overload the nested rule for products
 // such that the nested type is a const reference to a plain matrix
-template<typename Lhs, typename Rhs, int Mode, int N, typename PlainMatrixType>
-struct ei_nested<GeneralProduct<Lhs,Rhs,Mode>, N, PlainMatrixType>
+template<typename Lhs, typename Rhs, int Mode, int N, typename PlainObject>
+struct ei_nested<GeneralProduct<Lhs,Rhs,Mode>, N, PlainObject>
 {
-  typedef PlainMatrixType const& type;
+  typedef PlainObject const& type;
 };
 
 template<typename NestedProduct>
diff --git a/Eigen/src/Core/ReturnByValue.h b/Eigen/src/Core/ReturnByValue.h
index 920269365..d375f0b5c 100644
--- a/Eigen/src/Core/ReturnByValue.h
+++ b/Eigen/src/Core/ReturnByValue.h
@@ -31,7 +31,7 @@
   */
 template<typename Derived>
 struct ei_traits<ReturnByValue<Derived> >
-  : public ei_traits<typename ei_traits<Derived>::ReturnMatrixType>
+  : public ei_traits<typename ei_traits<Derived>::ReturnType>
 {
   enum {
     // FIXME had to remove the DirectAccessBit for usage like
@@ -42,7 +42,7 @@ struct ei_traits<ReturnByValue<Derived> >
     // The fact that I had to do that shows that when doing xpr.block() with a non-direct-access xpr,
     // even if xpr has the EvalBeforeNestingBit, the block() doesn't use direct access on the evaluated
     // xpr.
-    Flags = (ei_traits<typename ei_traits<Derived>::ReturnMatrixType>::Flags
+    Flags = (ei_traits<typename ei_traits<Derived>::ReturnType>::Flags
              | EvalBeforeNestingBit) & ~DirectAccessBit
   };
 };
@@ -51,18 +51,18 @@ struct ei_traits<ReturnByValue<Derived> >
  * So the only way that nesting it in an expression can work, is by evaluating it into a plain matrix.
  * So ei_nested always gives the plain return matrix type.
  */
-template<typename Derived,int n,typename PlainMatrixType>
-struct ei_nested<ReturnByValue<Derived>, n, PlainMatrixType>
+template<typename Derived,int n,typename PlainObject>
+struct ei_nested<ReturnByValue<Derived>, n, PlainObject>
 {
-  typedef typename ei_traits<Derived>::ReturnMatrixType type;
+  typedef typename ei_traits<Derived>::ReturnType type;
 };
 
 template<typename Derived> class ReturnByValue
-  : public ei_traits<Derived>::ReturnMatrixType::template MakeBase<ReturnByValue<Derived> >::Type
+  : public ei_traits<Derived>::ReturnType::template MakeBase<ReturnByValue<Derived> >::Type
 {
   public:
-    typedef typename ei_traits<Derived>::ReturnMatrixType ReturnMatrixType;
-    typedef typename ReturnMatrixType::template MakeBase<ReturnByValue<Derived> >::Type Base;
+    typedef typename ei_traits<Derived>::ReturnType ReturnType;
+    typedef typename ReturnType::template MakeBase<ReturnByValue<Derived> >::Type Base;
     EIGEN_DENSE_PUBLIC_INTERFACE(ReturnByValue)
 
     template<typename Dest>
diff --git a/Eigen/src/Core/SelfAdjointView.h b/Eigen/src/Core/SelfAdjointView.h
index 6d01ee495..c3c5b17ff 100644
--- a/Eigen/src/Core/SelfAdjointView.h
+++ b/Eigen/src/Core/SelfAdjointView.h
@@ -68,7 +68,7 @@ template<typename MatrixType, unsigned int UpLo> class SelfAdjointView
     enum {
       Mode = ei_traits<SelfAdjointView>::Mode
     };
-    typedef typename MatrixType::PlainMatrixType PlainMatrixType;
+    typedef typename MatrixType::PlainObject PlainObject;
 
     inline SelfAdjointView(const MatrixType& matrix) : m_matrix(matrix)
     { ei_assert(ei_are_flags_consistent<Mode>::ret); }
@@ -146,8 +146,8 @@ template<typename MatrixType, unsigned int UpLo> class SelfAdjointView
 
 /////////// Cholesky module ///////////
 
-    const LLT<PlainMatrixType, UpLo> llt() const;
-    const LDLT<PlainMatrixType> ldlt() const;
+    const LLT<PlainObject, UpLo> llt() const;
+    const LDLT<PlainObject> ldlt() const;
 
   protected:
     const typename MatrixType::Nested m_matrix;
diff --git a/Eigen/src/Core/SelfCwiseBinaryOp.h b/Eigen/src/Core/SelfCwiseBinaryOp.h
index 7ae2e82a4..d2690b66b 100644
--- a/Eigen/src/Core/SelfCwiseBinaryOp.h
+++ b/Eigen/src/Core/SelfCwiseBinaryOp.h
@@ -124,8 +124,8 @@ template<typename Derived>
 inline Derived& DenseBase<Derived>::operator*=(const Scalar& other)
 {
   SelfCwiseBinaryOp<ei_scalar_product_op<Scalar>, Derived> tmp(derived());
-  typedef typename Derived::PlainMatrixType PlainMatrixType;
-  tmp = PlainMatrixType::Constant(rows(),cols(),other);
+  typedef typename Derived::PlainObject PlainObject;
+  tmp = PlainObject::Constant(rows(),cols(),other);
   return derived();
 }
 
@@ -133,8 +133,8 @@ template<typename Derived>
 inline Derived& DenseBase<Derived>::operator/=(const Scalar& other)
 {
   SelfCwiseBinaryOp<typename ei_meta_if<NumTraits<Scalar>::HasFloatingPoint,ei_scalar_product_op<Scalar>,ei_scalar_quotient_op<Scalar> >::ret, Derived> tmp(derived());
-  typedef typename Derived::PlainMatrixType PlainMatrixType;
-  tmp = PlainMatrixType::Constant(rows(),cols(), NumTraits<Scalar>::HasFloatingPoint ? Scalar(1)/other : other);
+  typedef typename Derived::PlainObject PlainObject;
+  tmp = PlainObject::Constant(rows(),cols(), NumTraits<Scalar>::HasFloatingPoint ? Scalar(1)/other : other);
   return derived();
 }
 
diff --git a/Eigen/src/Core/TriangularMatrix.h b/Eigen/src/Core/TriangularMatrix.h
index 859f10298..7d978b800 100644
--- a/Eigen/src/Core/TriangularMatrix.h
+++ b/Eigen/src/Core/TriangularMatrix.h
@@ -148,7 +148,7 @@ template<typename _MatrixType, unsigned int _Mode> class TriangularView
     typedef TriangularBase<TriangularView> Base;
     typedef typename ei_traits<TriangularView>::Scalar Scalar;
     typedef _MatrixType MatrixType;
-    typedef typename MatrixType::PlainMatrixType DenseMatrixType;
+    typedef typename MatrixType::PlainObject DenseMatrixType;
     typedef typename MatrixType::Nested MatrixTypeNested;
     typedef typename ei_cleantype<MatrixTypeNested>::type _MatrixTypeNested;
 
diff --git a/Eigen/src/Core/products/CoeffBasedProduct.h b/Eigen/src/Core/products/CoeffBasedProduct.h
index f030d59b5..3343b1875 100644
--- a/Eigen/src/Core/products/CoeffBasedProduct.h
+++ b/Eigen/src/Core/products/CoeffBasedProduct.h
@@ -109,7 +109,7 @@ class CoeffBasedProduct
 
     typedef MatrixBase<CoeffBasedProduct> Base;
     EIGEN_DENSE_PUBLIC_INTERFACE(CoeffBasedProduct)
-    typedef typename Base::PlainMatrixType PlainMatrixType;
+    typedef typename Base::PlainObject PlainObject;
 
   private:
 
@@ -181,8 +181,8 @@ class CoeffBasedProduct
       return res;
     }
 
-    // Implicit convertion to the nested type (trigger the evaluation of the product)
-    operator const PlainMatrixType& () const
+    // Implicit conversion to the nested type (trigger the evaluation of the product)
+    operator const PlainObject& () const
     {
       m_result.lazyAssign(*this);
       return m_result;
@@ -205,15 +205,15 @@ class CoeffBasedProduct
     const LhsNested m_lhs;
     const RhsNested m_rhs;
 
-    mutable PlainMatrixType m_result;
+    mutable PlainObject m_result;
 };
 
 // here we need to overload the nested rule for products
 // such that the nested type is a const reference to a plain matrix
-template<typename Lhs, typename Rhs, int N, typename PlainMatrixType>
-struct ei_nested<CoeffBasedProduct<Lhs,Rhs,EvalBeforeNestingBit|EvalBeforeAssigningBit>, N, PlainMatrixType>
+template<typename Lhs, typename Rhs, int N, typename PlainObject>
+struct ei_nested<CoeffBasedProduct<Lhs,Rhs,EvalBeforeNestingBit|EvalBeforeAssigningBit>, N, PlainObject>
 {
-  typedef PlainMatrixType const& type;
+  typedef PlainObject const& type;
 };
 
 /***************************************************************************
diff --git a/Eigen/src/Core/util/BlasUtil.h b/Eigen/src/Core/util/BlasUtil.h
index 3777464dc..2ca463d5d 100644
--- a/Eigen/src/Core/util/BlasUtil.h
+++ b/Eigen/src/Core/util/BlasUtil.h
@@ -166,7 +166,7 @@ template<typename XprType> struct ei_blas_traits
   };
   typedef typename ei_meta_if<int(ActualAccess)==HasDirectAccess,
     ExtractType,
-    typename _ExtractType::PlainMatrixType
+    typename _ExtractType::PlainObject
     >::ret DirectLinearAccessType;
   static inline ExtractType extract(const XprType& x) { return x; }
   static inline Scalar extractScalarFactor(const XprType&) { return Scalar(1); }
@@ -227,7 +227,7 @@ struct ei_blas_traits<Transpose<NestedXpr> >
   typedef Transpose<typename Base::_ExtractType> _ExtractType;
   typedef typename ei_meta_if<int(Base::ActualAccess)==HasDirectAccess,
     ExtractType,
-    typename ExtractType::PlainMatrixType
+    typename ExtractType::PlainObject
     >::ret DirectLinearAccessType;
   enum {
     IsTransposed = Base::IsTransposed ? 0 : 1
diff --git a/Eigen/src/Core/util/XprHelper.h b/Eigen/src/Core/util/XprHelper.h
index 4884557e5..a54ddd155 100644
--- a/Eigen/src/Core/util/XprHelper.h
+++ b/Eigen/src/Core/util/XprHelper.h
@@ -147,7 +147,7 @@ template<typename T, typename StorageType = typename ei_traits<T>::StorageType>
 template<typename T> struct ei_eval<T,Dense>
 {
   typedef typename ei_plain_matrix_type<T>::type type;
-//   typedef typename T::PlainMatrixType type;
+//   typedef typename T::PlainObject type;
 //   typedef T::Matrix<typename ei_traits<T>::Scalar,
 //                 ei_traits<T>::RowsAtCompileTime,
 //                 ei_traits<T>::ColsAtCompileTime,
@@ -256,7 +256,7 @@ struct ei_ref_selector
   * const Matrix3d&, because the internal logic of ei_nested determined that since a was already a matrix, there was no point
   * in copying it into another matrix.
   */
-template<typename T, int n=1, typename PlainMatrixType = typename ei_eval<T>::type> struct ei_nested
+template<typename T, int n=1, typename PlainObject = typename ei_eval<T>::type> struct ei_nested
 {
   enum {
     CostEval   = (n+1) * int(NumTraits<typename ei_traits<T>::Scalar>::ReadCost),
@@ -266,7 +266,7 @@ template<typename T, int n=1, typename PlainMatrixType = typename ei_eval<T>::ty
   typedef typename ei_meta_if<
     ( int(ei_traits<T>::Flags) & EvalBeforeNestingBit ) ||
     ( int(CostEval) <= int(CostNoEval) ),
-      PlainMatrixType,
+      PlainObject,
       typename ei_ref_selector<T>::type
   >::ret type;
 };