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author | Benoit Bolsee <benoit.bolsee@online.be> | 2009-09-25 01:22:24 +0400 |
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committer | Benoit Bolsee <benoit.bolsee@online.be> | 2009-09-25 01:22:24 +0400 |
commit | 1483fafd1372a3d3e025d08634e798adb7da512f (patch) | |
tree | 9191765749e29866339f4c31d892603f5f8b334d /extern/Eigen2/Eigen/src/Core/Flagged.h | |
parent | c995c605f640d8d688e6e58e0fe247ca83f91696 (diff) | |
parent | 222fe6b1a5d49f67177cbb762f55a0e482145f5d (diff) |
Merge of itasc branch. Project files, scons and cmake should be working. Makefile updated but not tested. Comes with Eigen2 2.0.6 C++ matrix library.
Diffstat (limited to 'extern/Eigen2/Eigen/src/Core/Flagged.h')
-rw-r--r-- | extern/Eigen2/Eigen/src/Core/Flagged.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/extern/Eigen2/Eigen/src/Core/Flagged.h b/extern/Eigen2/Eigen/src/Core/Flagged.h new file mode 100644 index 00000000000..ce50246cb67 --- /dev/null +++ b/extern/Eigen2/Eigen/src/Core/Flagged.h @@ -0,0 +1,146 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. Eigen itself is part of the KDE project. +// +// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com> +// +// 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_FLAGGED_H +#define EIGEN_FLAGGED_H + +/** \class Flagged + * + * \brief Expression with modified flags + * + * \param ExpressionType the type of the object of which we are modifying the flags + * \param Added the flags added to the expression + * \param Removed the flags removed from the expression (has priority over Added). + * + * This class represents an expression whose flags have been modified. + * It is the return type of MatrixBase::flagged() + * and most of the time this is the only way it is used. + * + * \sa MatrixBase::flagged() + */ +template<typename ExpressionType, unsigned int Added, unsigned int Removed> +struct ei_traits<Flagged<ExpressionType, Added, Removed> > : ei_traits<ExpressionType> +{ + enum { Flags = (ExpressionType::Flags | Added) & ~Removed }; +}; + +template<typename ExpressionType, unsigned int Added, unsigned int Removed> class Flagged + : public MatrixBase<Flagged<ExpressionType, Added, Removed> > +{ + public: + + EIGEN_GENERIC_PUBLIC_INTERFACE(Flagged) + typedef typename ei_meta_if<ei_must_nest_by_value<ExpressionType>::ret, + ExpressionType, const ExpressionType&>::ret ExpressionTypeNested; + typedef typename ExpressionType::InnerIterator InnerIterator; + + inline Flagged(const ExpressionType& matrix) : m_matrix(matrix) {} + + inline int rows() const { return m_matrix.rows(); } + inline int cols() const { return m_matrix.cols(); } + inline int stride() const { return m_matrix.stride(); } + + inline const Scalar coeff(int row, int col) const + { + return m_matrix.coeff(row, col); + } + + inline Scalar& coeffRef(int row, int col) + { + return m_matrix.const_cast_derived().coeffRef(row, col); + } + + inline const Scalar coeff(int index) const + { + return m_matrix.coeff(index); + } + + inline Scalar& coeffRef(int index) + { + return m_matrix.const_cast_derived().coeffRef(index); + } + + template<int LoadMode> + inline const PacketScalar packet(int row, int col) const + { + return m_matrix.template packet<LoadMode>(row, col); + } + + template<int LoadMode> + inline void writePacket(int row, int col, const PacketScalar& x) + { + m_matrix.const_cast_derived().template writePacket<LoadMode>(row, col, x); + } + + template<int LoadMode> + inline const PacketScalar packet(int index) const + { + return m_matrix.template packet<LoadMode>(index); + } + + template<int LoadMode> + inline void writePacket(int index, const PacketScalar& x) + { + m_matrix.const_cast_derived().template writePacket<LoadMode>(index, x); + } + + const ExpressionType& _expression() const { return m_matrix; } + + protected: + ExpressionTypeNested m_matrix; +}; + +/** \returns an expression of *this with added flags + * + * \addexample MarkExample \label How to mark a triangular matrix as triangular + * + * Example: \include MatrixBase_marked.cpp + * Output: \verbinclude MatrixBase_marked.out + * + * \sa class Flagged, extract(), part() + */ +template<typename Derived> +template<unsigned int Added> +inline const Flagged<Derived, Added, 0> +MatrixBase<Derived>::marked() const +{ + return derived(); +} + +/** \returns an expression of *this with the following flags removed: + * EvalBeforeNestingBit and EvalBeforeAssigningBit. + * + * Example: \include MatrixBase_lazy.cpp + * Output: \verbinclude MatrixBase_lazy.out + * + * \sa class Flagged, marked() + */ +template<typename Derived> +inline const Flagged<Derived, 0, EvalBeforeNestingBit | EvalBeforeAssigningBit> +MatrixBase<Derived>::lazy() const +{ + return derived(); +} + +#endif // EIGEN_FLAGGED_H |