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-// This file is part of Eigen, a lightweight C++ template library
-// for linear algebra.
-//
-// Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr>
-// Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
-//
-// This Source Code Form is subject to the terms of the Mozilla
-// Public License v. 2.0. If a copy of the MPL was not distributed
-// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-#ifndef EIGEN_BLOCK2_H
-#define EIGEN_BLOCK2_H
-
-namespace Eigen {
-
-/** \returns a dynamic-size expression of a corner of *this.
- *
- * \param type the type of corner. Can be \a Eigen::TopLeft, \a Eigen::TopRight,
- * \a Eigen::BottomLeft, \a Eigen::BottomRight.
- * \param cRows the number of rows in the corner
- * \param cCols the number of columns in the corner
- *
- * Example: \include MatrixBase_corner_enum_int_int.cpp
- * Output: \verbinclude MatrixBase_corner_enum_int_int.out
- *
- * \note Even though the returned expression has dynamic size, in the case
- * when it is applied to a fixed-size matrix, it inherits a fixed maximal size,
- * which means that evaluating it does not cause a dynamic memory allocation.
- *
- * \sa class Block, block(Index,Index,Index,Index)
- */
-template<typename Derived>
-inline Block<Derived> DenseBase<Derived>
- ::corner(CornerType type, Index cRows, Index cCols)
-{
- switch(type)
- {
- default:
- eigen_assert(false && "Bad corner type.");
- case TopLeft:
- return Block<Derived>(derived(), 0, 0, cRows, cCols);
- case TopRight:
- return Block<Derived>(derived(), 0, cols() - cCols, cRows, cCols);
- case BottomLeft:
- return Block<Derived>(derived(), rows() - cRows, 0, cRows, cCols);
- case BottomRight:
- return Block<Derived>(derived(), rows() - cRows, cols() - cCols, cRows, cCols);
- }
-}
-
-/** This is the const version of corner(CornerType, Index, Index).*/
-template<typename Derived>
-inline const Block<Derived>
-DenseBase<Derived>::corner(CornerType type, Index cRows, Index cCols) const
-{
- switch(type)
- {
- default:
- eigen_assert(false && "Bad corner type.");
- case TopLeft:
- return Block<Derived>(derived(), 0, 0, cRows, cCols);
- case TopRight:
- return Block<Derived>(derived(), 0, cols() - cCols, cRows, cCols);
- case BottomLeft:
- return Block<Derived>(derived(), rows() - cRows, 0, cRows, cCols);
- case BottomRight:
- return Block<Derived>(derived(), rows() - cRows, cols() - cCols, cRows, cCols);
- }
-}
-
-/** \returns a fixed-size expression of a corner of *this.
- *
- * \param type the type of corner. Can be \a Eigen::TopLeft, \a Eigen::TopRight,
- * \a Eigen::BottomLeft, \a Eigen::BottomRight.
- *
- * The template parameters CRows and CCols arethe number of rows and columns in the corner.
- *
- * Example: \include MatrixBase_template_int_int_corner_enum.cpp
- * Output: \verbinclude MatrixBase_template_int_int_corner_enum.out
- *
- * \sa class Block, block(Index,Index,Index,Index)
- */
-template<typename Derived>
-template<int CRows, int CCols>
-inline Block<Derived, CRows, CCols>
-DenseBase<Derived>::corner(CornerType type)
-{
- switch(type)
- {
- default:
- eigen_assert(false && "Bad corner type.");
- case TopLeft:
- return Block<Derived, CRows, CCols>(derived(), 0, 0);
- case TopRight:
- return Block<Derived, CRows, CCols>(derived(), 0, cols() - CCols);
- case BottomLeft:
- return Block<Derived, CRows, CCols>(derived(), rows() - CRows, 0);
- case BottomRight:
- return Block<Derived, CRows, CCols>(derived(), rows() - CRows, cols() - CCols);
- }
-}
-
-/** This is the const version of corner<int, int>(CornerType).*/
-template<typename Derived>
-template<int CRows, int CCols>
-inline const Block<Derived, CRows, CCols>
-DenseBase<Derived>::corner(CornerType type) const
-{
- switch(type)
- {
- default:
- eigen_assert(false && "Bad corner type.");
- case TopLeft:
- return Block<Derived, CRows, CCols>(derived(), 0, 0);
- case TopRight:
- return Block<Derived, CRows, CCols>(derived(), 0, cols() - CCols);
- case BottomLeft:
- return Block<Derived, CRows, CCols>(derived(), rows() - CRows, 0);
- case BottomRight:
- return Block<Derived, CRows, CCols>(derived(), rows() - CRows, cols() - CCols);
- }
-}
-
-} // end namespace Eigen
-
-#endif // EIGEN_BLOCK2_H