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Diffstat (limited to 'extern/Eigen2/Eigen/src/Core/Map.h')
| -rw-r--r-- | extern/Eigen2/Eigen/src/Core/Map.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/extern/Eigen2/Eigen/src/Core/Map.h b/extern/Eigen2/Eigen/src/Core/Map.h new file mode 100644 index 00000000000..5f44a87e685 --- /dev/null +++ b/extern/Eigen2/Eigen/src/Core/Map.h @@ -0,0 +1,111 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. Eigen itself is part of the KDE project. +// +// Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com> +// Copyright (C) 2008 Gael Guennebaud <g.gael@free.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/>. + +#ifndef EIGEN_MAP_H +#define EIGEN_MAP_H + +/** \class Map + * + * \brief A matrix or vector expression mapping an existing array of data. + * + * \param MatrixType the equivalent matrix type of the mapped data + * \param _PacketAccess allows to enforce aligned loads and stores if set to ForceAligned. + * The default is AsRequested. This parameter is internaly used by Eigen + * in expressions such as \code Map<...>(...) += other; \endcode and most + * of the time this is the only way it is used. + * + * This class represents a matrix or vector expression mapping an existing array of data. + * It can be used to let Eigen interface without any overhead with non-Eigen data structures, + * such as plain C arrays or structures from other libraries. + * + * This class is the return type of Matrix::Map() but can also be used directly. + * + * \sa Matrix::Map() + */ +template<typename MatrixType, int _PacketAccess> +struct ei_traits<Map<MatrixType, _PacketAccess> > : public ei_traits<MatrixType> +{ + enum { + PacketAccess = _PacketAccess, + Flags = ei_traits<MatrixType>::Flags & ~AlignedBit + }; + typedef typename ei_meta_if<int(PacketAccess)==ForceAligned, + Map<MatrixType, _PacketAccess>&, + Map<MatrixType, ForceAligned> >::ret AlignedDerivedType; +}; + +template<typename MatrixType, int PacketAccess> class Map + : public MapBase<Map<MatrixType, PacketAccess> > +{ + public: + + _EIGEN_GENERIC_PUBLIC_INTERFACE(Map, MapBase<Map>) + typedef typename ei_traits<Map>::AlignedDerivedType AlignedDerivedType; + + inline int stride() const { return this->innerSize(); } + + AlignedDerivedType _convertToForceAligned() + { + return Map<MatrixType,ForceAligned>(Base::m_data, Base::m_rows.value(), Base::m_cols.value()); + } + + inline Map(const Scalar* data) : Base(data) {} + + inline Map(const Scalar* data, int size) : Base(data, size) {} + + inline Map(const Scalar* data, int rows, int cols) : Base(data, rows, cols) {} + + inline void resize(int rows, int cols) + { + EIGEN_ONLY_USED_FOR_DEBUG(rows); + EIGEN_ONLY_USED_FOR_DEBUG(cols); + ei_assert(rows == this->rows()); + ei_assert(cols == this->cols()); + } + + inline void resize(int size) + { + EIGEN_STATIC_ASSERT_VECTOR_ONLY(MatrixType) + EIGEN_ONLY_USED_FOR_DEBUG(size); + ei_assert(size == this->size()); + } + + EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Map) +}; + +/** Constructor copying an existing array of data. + * Only for fixed-size matrices and vectors. + * \param data The array of data to copy + * + * \sa Matrix::Map(const Scalar *) + */ +template<typename _Scalar, int _Rows, int _Cols, int _StorageOrder, int _MaxRows, int _MaxCols> +inline Matrix<_Scalar, _Rows, _Cols, _StorageOrder, _MaxRows, _MaxCols> + ::Matrix(const Scalar *data) +{ + _set_noalias(Eigen::Map<Matrix>(data)); +} + +#endif // EIGEN_MAP_H |