diff options
Diffstat (limited to 'extern/Eigen3/Eigen/src/Core/Diagonal.h')
| -rw-r--r-- | extern/Eigen3/Eigen/src/Core/Diagonal.h | 59 |
1 files changed, 34 insertions, 25 deletions
diff --git a/extern/Eigen3/Eigen/src/Core/Diagonal.h b/extern/Eigen3/Eigen/src/Core/Diagonal.h index 61d3b063a44..16261968a0f 100644 --- a/extern/Eigen3/Eigen/src/Core/Diagonal.h +++ b/extern/Eigen3/Eigen/src/Core/Diagonal.h @@ -2,29 +2,17 @@ // for linear algebra. // // Copyright (C) 2007-2009 Benoit Jacob <jacob.benoit.1@gmail.com> +// Copyright (C) 2009-2010 Gael Guennebaud <gael.guennebaud@inria.fr> // -// Eigen is free software; you can redistribute it and/or -// modify it under the terms of the GNU Lesser General Public -// License as published by the Free Software Foundation; either -// version 3 of the License, or (at your option) any later version. -// -// Alternatively, you can redistribute it and/or -// modify it under the terms of the GNU General Public License as -// published by the Free Software Foundation; either version 2 of -// the License, or (at your option) any later version. -// -// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY -// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS -// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public -// License and a copy of the GNU General Public License along with -// Eigen. If not, see <http://www.gnu.org/licenses/>. +// 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_DIAGONAL_H #define EIGEN_DIAGONAL_H +namespace Eigen { + /** \class Diagonal * \ingroup Core_Module * @@ -53,16 +41,15 @@ struct traits<Diagonal<MatrixType,DiagIndex> > typedef typename remove_reference<MatrixTypeNested>::type _MatrixTypeNested; typedef typename MatrixType::StorageKind StorageKind; enum { - AbsDiagIndex = DiagIndex<0 ? -DiagIndex : DiagIndex, // only used if DiagIndex != Dynamic - // FIXME these computations are broken in the case where the matrix is rectangular and DiagIndex!=0 RowsAtCompileTime = (int(DiagIndex) == Dynamic || int(MatrixType::SizeAtCompileTime) == Dynamic) ? Dynamic - : (EIGEN_SIZE_MIN_PREFER_DYNAMIC(MatrixType::RowsAtCompileTime, - MatrixType::ColsAtCompileTime) - AbsDiagIndex), + : (EIGEN_PLAIN_ENUM_MIN(MatrixType::RowsAtCompileTime - EIGEN_PLAIN_ENUM_MAX(-DiagIndex, 0), + MatrixType::ColsAtCompileTime - EIGEN_PLAIN_ENUM_MAX( DiagIndex, 0))), ColsAtCompileTime = 1, MaxRowsAtCompileTime = int(MatrixType::MaxSizeAtCompileTime) == Dynamic ? Dynamic : DiagIndex == Dynamic ? EIGEN_SIZE_MIN_PREFER_FIXED(MatrixType::MaxRowsAtCompileTime, - MatrixType::MaxColsAtCompileTime) - : (EIGEN_SIZE_MIN_PREFER_FIXED(MatrixType::MaxRowsAtCompileTime, MatrixType::MaxColsAtCompileTime) - AbsDiagIndex), + MatrixType::MaxColsAtCompileTime) + : (EIGEN_PLAIN_ENUM_MIN(MatrixType::MaxRowsAtCompileTime - EIGEN_PLAIN_ENUM_MAX(-DiagIndex, 0), + MatrixType::MaxColsAtCompileTime - EIGEN_PLAIN_ENUM_MAX( DiagIndex, 0))), MaxColsAtCompileTime = 1, MaskLvalueBit = is_lvalue<MatrixType>::value ? LvalueBit : 0, Flags = (unsigned int)_MatrixTypeNested::Flags & (HereditaryBits | LinearAccessBit | MaskLvalueBit | DirectAccessBit) & ~RowMajorBit, @@ -101,6 +88,15 @@ template<typename MatrixType, int DiagIndex> class Diagonal return 0; } + typedef typename internal::conditional< + internal::is_lvalue<MatrixType>::value, + Scalar, + const Scalar + >::type ScalarWithConstIfNotLvalue; + + inline ScalarWithConstIfNotLvalue* data() { return &(m_matrix.const_cast_derived().coeffRef(rowOffset(), colOffset())); } + inline const Scalar* data() const { return &(m_matrix.const_cast_derived().coeffRef(rowOffset(), colOffset())); } + inline Scalar& coeffRef(Index row, Index) { EIGEN_STATIC_ASSERT_LVALUE(MatrixType) @@ -133,8 +129,19 @@ template<typename MatrixType, int DiagIndex> class Diagonal return m_matrix.coeff(index+rowOffset(), index+colOffset()); } + const typename internal::remove_all<typename MatrixType::Nested>::type& + nestedExpression() const + { + return m_matrix; + } + + int index() const + { + return m_index.value(); + } + protected: - const typename MatrixType::Nested m_matrix; + typename MatrixType::Nested m_matrix; const internal::variable_if_dynamic<Index, DiagIndex> m_index; private: @@ -224,4 +231,6 @@ MatrixBase<Derived>::diagonal() const return derived(); } +} // end namespace Eigen + #endif // EIGEN_DIAGONAL_H |