From ee3662abc57230dbe7bf6e5259f335f7fa4750f1 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Thu, 17 Jan 2019 18:27:49 +0100
Subject: [PATCH] Remove some useless const_cast

---
 Eigen/src/Core/CwiseUnaryView.h | 2 +-
 Eigen/src/Core/IndexedView.h    | 2 +-
 Eigen/src/Core/Reverse.h        | 2 +-
 Eigen/src/Core/Solve.h          | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Eigen/src/Core/CwiseUnaryView.h b/Eigen/src/Core/CwiseUnaryView.h
index 271033056..21cf5ea9e 100644
--- a/Eigen/src/Core/CwiseUnaryView.h
+++ b/Eigen/src/Core/CwiseUnaryView.h
@@ -81,7 +81,7 @@ class CwiseUnaryView : public CwiseUnaryViewImpl<ViewOp, MatrixType, typename in
 
     /** \returns the nested expression */
     typename internal::remove_reference<MatrixTypeNested>::type&
-    nestedExpression() { return m_matrix.const_cast_derived(); }
+    nestedExpression() { return m_matrix; }
 
   protected:
     MatrixTypeNested m_matrix;
diff --git a/Eigen/src/Core/IndexedView.h b/Eigen/src/Core/IndexedView.h
index 3485d8f46..377f8a5cc 100644
--- a/Eigen/src/Core/IndexedView.h
+++ b/Eigen/src/Core/IndexedView.h
@@ -132,7 +132,7 @@ public:
 
   /** \returns the nested expression */
   typename internal::remove_reference<XprType>::type&
-  nestedExpression() { return m_xpr.const_cast_derived(); }
+  nestedExpression() { return m_xpr; }
 
   /** \returns a const reference to the object storing/generating the row indices */
   const RowIndices& rowIndices() const { return m_rowIndices; }
diff --git a/Eigen/src/Core/Reverse.h b/Eigen/src/Core/Reverse.h
index 8b6b3ab03..711dbcf9a 100644
--- a/Eigen/src/Core/Reverse.h
+++ b/Eigen/src/Core/Reverse.h
@@ -203,7 +203,7 @@ struct vectorwise_reverse_inplace_impl<Horizontal>
 template<typename ExpressionType, int Direction>
 EIGEN_DEVICE_FUNC void VectorwiseOp<ExpressionType,Direction>::reverseInPlace()
 {
-  internal::vectorwise_reverse_inplace_impl<Direction>::run(_expression().const_cast_derived());
+  internal::vectorwise_reverse_inplace_impl<Direction>::run(m_matrix);
 }
 
 } // end namespace Eigen
diff --git a/Eigen/src/Core/Solve.h b/Eigen/src/Core/Solve.h
index 2bf940a26..ec4b4a987 100644
--- a/Eigen/src/Core/Solve.h
+++ b/Eigen/src/Core/Solve.h
@@ -19,7 +19,7 @@ template<typename Decomposition, typename RhsType, typename StorageKind> class S
   *
   * \brief Pseudo expression representing a solving operation
   *
-  * \tparam Decomposition the type of the matrix or decomposion object
+  * \tparam Decomposition the type of the matrix or decomposition object
   * \tparam Rhstype the type of the right-hand side
   *
   * This class represents an expression of A.solve(B)