diff options
Diffstat (limited to 'extern/Eigen3/Eigen/src/Core/ForceAlignedAccess.h')
-rw-r--r-- | extern/Eigen3/Eigen/src/Core/ForceAlignedAccess.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/extern/Eigen3/Eigen/src/Core/ForceAlignedAccess.h b/extern/Eigen3/Eigen/src/Core/ForceAlignedAccess.h new file mode 100644 index 00000000000..11c1f8f709a --- /dev/null +++ b/extern/Eigen3/Eigen/src/Core/ForceAlignedAccess.h @@ -0,0 +1,157 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// 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/>. + +#ifndef EIGEN_FORCEALIGNEDACCESS_H +#define EIGEN_FORCEALIGNEDACCESS_H + +/** \class ForceAlignedAccess + * \ingroup Core_Module + * + * \brief Enforce aligned packet loads and stores regardless of what is requested + * + * \param ExpressionType the type of the object of which we are forcing aligned packet access + * + * This class is the return type of MatrixBase::forceAlignedAccess() + * and most of the time this is the only way it is used. + * + * \sa MatrixBase::forceAlignedAccess() + */ + +namespace internal { +template<typename ExpressionType> +struct traits<ForceAlignedAccess<ExpressionType> > : public traits<ExpressionType> +{}; +} + +template<typename ExpressionType> class ForceAlignedAccess + : public internal::dense_xpr_base< ForceAlignedAccess<ExpressionType> >::type +{ + public: + + typedef typename internal::dense_xpr_base<ForceAlignedAccess>::type Base; + EIGEN_DENSE_PUBLIC_INTERFACE(ForceAlignedAccess) + + inline ForceAlignedAccess(const ExpressionType& matrix) : m_expression(matrix) {} + + inline Index rows() const { return m_expression.rows(); } + inline Index cols() const { return m_expression.cols(); } + inline Index outerStride() const { return m_expression.outerStride(); } + inline Index innerStride() const { return m_expression.innerStride(); } + + inline const CoeffReturnType coeff(Index row, Index col) const + { + return m_expression.coeff(row, col); + } + + inline Scalar& coeffRef(Index row, Index col) + { + return m_expression.const_cast_derived().coeffRef(row, col); + } + + inline const CoeffReturnType coeff(Index index) const + { + return m_expression.coeff(index); + } + + inline Scalar& coeffRef(Index index) + { + return m_expression.const_cast_derived().coeffRef(index); + } + + template<int LoadMode> + inline const PacketScalar packet(Index row, Index col) const + { + return m_expression.template packet<Aligned>(row, col); + } + + template<int LoadMode> + inline void writePacket(Index row, Index col, const PacketScalar& x) + { + m_expression.const_cast_derived().template writePacket<Aligned>(row, col, x); + } + + template<int LoadMode> + inline const PacketScalar packet(Index index) const + { + return m_expression.template packet<Aligned>(index); + } + + template<int LoadMode> + inline void writePacket(Index index, const PacketScalar& x) + { + m_expression.const_cast_derived().template writePacket<Aligned>(index, x); + } + + operator const ExpressionType&() const { return m_expression; } + + protected: + const ExpressionType& m_expression; + + private: + ForceAlignedAccess& operator=(const ForceAlignedAccess&); +}; + +/** \returns an expression of *this with forced aligned access + * \sa forceAlignedAccessIf(),class ForceAlignedAccess + */ +template<typename Derived> +inline const ForceAlignedAccess<Derived> +MatrixBase<Derived>::forceAlignedAccess() const +{ + return ForceAlignedAccess<Derived>(derived()); +} + +/** \returns an expression of *this with forced aligned access + * \sa forceAlignedAccessIf(), class ForceAlignedAccess + */ +template<typename Derived> +inline ForceAlignedAccess<Derived> +MatrixBase<Derived>::forceAlignedAccess() +{ + return ForceAlignedAccess<Derived>(derived()); +} + +/** \returns an expression of *this with forced aligned access if \a Enable is true. + * \sa forceAlignedAccess(), class ForceAlignedAccess + */ +template<typename Derived> +template<bool Enable> +inline typename internal::add_const_on_value_type<typename internal::conditional<Enable,ForceAlignedAccess<Derived>,Derived&>::type>::type +MatrixBase<Derived>::forceAlignedAccessIf() const +{ + return derived(); +} + +/** \returns an expression of *this with forced aligned access if \a Enable is true. + * \sa forceAlignedAccess(), class ForceAlignedAccess + */ +template<typename Derived> +template<bool Enable> +inline typename internal::conditional<Enable,ForceAlignedAccess<Derived>,Derived&>::type +MatrixBase<Derived>::forceAlignedAccessIf() +{ + return derived(); +} + +#endif // EIGEN_FORCEALIGNEDACCESS_H |