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Diffstat (limited to 'third_party/eigen3/Eigen/src/Core/CoreEvaluators.h')
| -rw-r--r-- | third_party/eigen3/Eigen/src/Core/CoreEvaluators.h | 1121 |
1 files changed, 0 insertions, 1121 deletions
diff --git a/third_party/eigen3/Eigen/src/Core/CoreEvaluators.h b/third_party/eigen3/Eigen/src/Core/CoreEvaluators.h deleted file mode 100644 index 3568cb85f9..0000000000 --- a/third_party/eigen3/Eigen/src/Core/CoreEvaluators.h +++ /dev/null @@ -1,1121 +0,0 @@ -// This file is part of Eigen, a lightweight C++ template library -// for linear algebra. -// -// Copyright (C) 2011 Benoit Jacob <jacob.benoit.1@gmail.com> -// Copyright (C) 2011 Gael Guennebaud <gael.guennebaud@inria.fr> -// Copyright (C) 2011-2012 Jitse Niesen <jitse@maths.leeds.ac.uk> -// -// 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_COREEVALUATORS_H -#define EIGEN_COREEVALUATORS_H - -namespace Eigen { - -namespace internal { - -// evaluator_traits<T> contains traits for evaluator_impl<T> - -template<typename T> -struct evaluator_traits -{ - // 1 if evaluator_impl<T>::evalTo() exists - // 0 if evaluator_impl<T> allows coefficient-based access - static const int HasEvalTo = 0; - - // 1 if assignment A = B assumes aliasing when B is of type T and thus B needs to be evaluated into a - // temporary; 0 if not. - static const int AssumeAliasing = 0; -}; - -// expression class for evaluating nested expression to a temporary - -template<typename ArgType> -class EvalToTemp; - -// evaluator<T>::type is type of evaluator for T -// evaluator<T>::nestedType is type of evaluator if T is nested inside another evaluator - -template<typename T> -struct evaluator_impl -{ }; - -template<typename T, int Nested = evaluator_traits<T>::HasEvalTo> -struct evaluator_nested_type; - -template<typename T> -struct evaluator_nested_type<T, 0> -{ - typedef evaluator_impl<T> type; -}; - -template<typename T> -struct evaluator_nested_type<T, 1> -{ - typedef evaluator_impl<EvalToTemp<T> > type; -}; - -template<typename T> -struct evaluator -{ - typedef evaluator_impl<T> type; - typedef typename evaluator_nested_type<T>::type nestedType; -}; - -// TODO: Think about const-correctness - -template<typename T> -struct evaluator<const T> - : evaluator<T> -{ }; - -// ---------- base class for all writable evaluators ---------- - -// TODO this class does not seem to be necessary anymore -template<typename ExpressionType> -struct evaluator_impl_base -{ - typedef typename ExpressionType::Index Index; - // TODO that's not very nice to have to propagate all these traits. They are currently only needed to handle outer,inner indices. - typedef traits<ExpressionType> ExpressionTraits; - - evaluator_impl<ExpressionType>& derived() - { - return *static_cast<evaluator_impl<ExpressionType>*>(this); - } -}; - -// -------------------- Matrix and Array -------------------- -// -// evaluator_impl<PlainObjectBase> is a common base class for the -// Matrix and Array evaluators. - -template<typename Derived> -struct evaluator_impl<PlainObjectBase<Derived> > - : evaluator_impl_base<Derived> -{ - typedef PlainObjectBase<Derived> PlainObjectType; - - enum { - IsRowMajor = PlainObjectType::IsRowMajor, - IsVectorAtCompileTime = PlainObjectType::IsVectorAtCompileTime, - RowsAtCompileTime = PlainObjectType::RowsAtCompileTime, - ColsAtCompileTime = PlainObjectType::ColsAtCompileTime - }; - - evaluator_impl(const PlainObjectType& m) - : m_data(m.data()), m_outerStride(IsVectorAtCompileTime ? 0 : m.outerStride()) - { } - - typedef typename PlainObjectType::Index Index; - typedef typename PlainObjectType::Scalar Scalar; - typedef typename PlainObjectType::CoeffReturnType CoeffReturnType; - typedef typename PlainObjectType::PacketScalar PacketScalar; - typedef typename PlainObjectType::PacketReturnType PacketReturnType; - - CoeffReturnType coeff(Index row, Index col) const - { - if (IsRowMajor) - return m_data[row * m_outerStride.value() + col]; - else - return m_data[row + col * m_outerStride.value()]; - } - - CoeffReturnType coeff(Index index) const - { - return m_data[index]; - } - - Scalar& coeffRef(Index row, Index col) - { - if (IsRowMajor) - return const_cast<Scalar*>(m_data)[row * m_outerStride.value() + col]; - else - return const_cast<Scalar*>(m_data)[row + col * m_outerStride.value()]; - } - - Scalar& coeffRef(Index index) - { - return const_cast<Scalar*>(m_data)[index]; - } - - template<int LoadMode> - PacketReturnType packet(Index row, Index col) const - { - if (IsRowMajor) - return ploadt<PacketScalar, LoadMode>(m_data + row * m_outerStride.value() + col); - else - return ploadt<PacketScalar, LoadMode>(m_data + row + col * m_outerStride.value()); - } - - template<int LoadMode> - PacketReturnType packet(Index index) const - { - return ploadt<PacketScalar, LoadMode>(m_data + index); - } - - template<int StoreMode> - void writePacket(Index row, Index col, const PacketScalar& x) - { - if (IsRowMajor) - return pstoret<Scalar, PacketScalar, StoreMode> - (const_cast<Scalar*>(m_data) + row * m_outerStride.value() + col, x); - else - return pstoret<Scalar, PacketScalar, StoreMode> - (const_cast<Scalar*>(m_data) + row + col * m_outerStride.value(), x); - } - - template<int StoreMode> - void writePacket(Index index, const PacketScalar& x) - { - return pstoret<Scalar, PacketScalar, StoreMode>(const_cast<Scalar*>(m_data) + index, x); - } - -protected: - const Scalar *m_data; - - // We do not need to know the outer stride for vectors - variable_if_dynamic<Index, IsVectorAtCompileTime ? 0 - : int(IsRowMajor) ? ColsAtCompileTime - : RowsAtCompileTime> m_outerStride; -}; - -template<typename Scalar, int Rows, int Cols, int Options, int MaxRows, int MaxCols> -struct evaluator_impl<Matrix<Scalar, Rows, Cols, Options, MaxRows, MaxCols> > - : evaluator_impl<PlainObjectBase<Matrix<Scalar, Rows, Cols, Options, MaxRows, MaxCols> > > -{ - typedef Matrix<Scalar, Rows, Cols, Options, MaxRows, MaxCols> XprType; - - evaluator_impl(const XprType& m) - : evaluator_impl<PlainObjectBase<XprType> >(m) - { } -}; - -template<typename Scalar, int Rows, int Cols, int Options, int MaxRows, int MaxCols> -struct evaluator_impl<Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols> > - : evaluator_impl<PlainObjectBase<Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols> > > -{ - typedef Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols> XprType; - - evaluator_impl(const XprType& m) - : evaluator_impl<PlainObjectBase<XprType> >(m) - { } -}; - -// -------------------- EvalToTemp -------------------- - -template<typename ArgType> -struct traits<EvalToTemp<ArgType> > - : public traits<ArgType> -{ }; - -template<typename ArgType> -class EvalToTemp - : public dense_xpr_base<EvalToTemp<ArgType> >::type -{ - public: - - typedef typename dense_xpr_base<EvalToTemp>::type Base; - EIGEN_GENERIC_PUBLIC_INTERFACE(EvalToTemp) - - EvalToTemp(const ArgType& arg) - : m_arg(arg) - { } - - const ArgType& arg() const - { - return m_arg; - } - - Index rows() const - { - return m_arg.rows(); - } - - Index cols() const - { - return m_arg.cols(); - } - - private: - const ArgType& m_arg; -}; - -template<typename ArgType> -struct evaluator_impl<EvalToTemp<ArgType> > -{ - typedef EvalToTemp<ArgType> XprType; - typedef typename ArgType::PlainObject PlainObject; - - evaluator_impl(const XprType& xpr) - : m_result(xpr.rows(), xpr.cols()), m_resultImpl(m_result) - { - // TODO we should simply do m_result(xpr.arg()); - call_dense_assignment_loop(m_result, xpr.arg()); - } - - // This constructor is used when nesting an EvalTo evaluator in another evaluator - evaluator_impl(const ArgType& arg) - : m_result(arg.rows(), arg.cols()), m_resultImpl(m_result) - { - // TODO we should simply do m_result(xpr.arg()); - call_dense_assignment_loop(m_result, arg); - } - - typedef typename PlainObject::Index Index; - typedef typename PlainObject::Scalar Scalar; - typedef typename PlainObject::CoeffReturnType CoeffReturnType; - typedef typename PlainObject::PacketScalar PacketScalar; - typedef typename PlainObject::PacketReturnType PacketReturnType; - - // All other functions are forwarded to m_resultImpl - - CoeffReturnType coeff(Index row, Index col) const - { - return m_resultImpl.coeff(row, col); - } - - CoeffReturnType coeff(Index index) const - { - return m_resultImpl.coeff(index); - } - - Scalar& coeffRef(Index row, Index col) - { - return m_resultImpl.coeffRef(row, col); - } - - Scalar& coeffRef(Index index) - { - return m_resultImpl.coeffRef(index); - } - - template<int LoadMode> - PacketReturnType packet(Index row, Index col) const - { - return m_resultImpl.template packet<LoadMode>(row, col); - } - - template<int LoadMode> - PacketReturnType packet(Index index) const - { - return m_resultImpl.packet<LoadMode>(index); - } - - template<int StoreMode> - void writePacket(Index row, Index col, const PacketScalar& x) - { - m_resultImpl.template writePacket<StoreMode>(row, col, x); - } - - template<int StoreMode> - void writePacket(Index index, const PacketScalar& x) - { - m_resultImpl.template writePacket<StoreMode>(index, x); - } - -protected: - PlainObject m_result; - typename evaluator<PlainObject>::nestedType m_resultImpl; -}; - -// -------------------- Transpose -------------------- - -template<typename ArgType> -struct evaluator_impl<Transpose<ArgType> > - : evaluator_impl_base<Transpose<ArgType> > -{ - typedef Transpose<ArgType> XprType; - - evaluator_impl(const XprType& t) : m_argImpl(t.nestedExpression()) {} - - typedef typename XprType::Index Index; - typedef typename XprType::Scalar Scalar; - typedef typename XprType::CoeffReturnType CoeffReturnType; - typedef typename XprType::PacketScalar PacketScalar; - typedef typename XprType::PacketReturnType PacketReturnType; - - CoeffReturnType coeff(Index row, Index col) const - { - return m_argImpl.coeff(col, row); - } - - CoeffReturnType coeff(Index index) const - { - return m_argImpl.coeff(index); - } - - Scalar& coeffRef(Index row, Index col) - { - return m_argImpl.coeffRef(col, row); - } - - typename XprType::Scalar& coeffRef(Index index) - { - return m_argImpl.coeffRef(index); - } - - template<int LoadMode> - PacketReturnType packet(Index row, Index col) const - { - return m_argImpl.template packet<LoadMode>(col, row); - } - - template<int LoadMode> - PacketReturnType packet(Index index) const - { - return m_argImpl.template packet<LoadMode>(index); - } - - template<int StoreMode> - void writePacket(Index row, Index col, const PacketScalar& x) - { - m_argImpl.template writePacket<StoreMode>(col, row, x); - } - - template<int StoreMode> - void writePacket(Index index, const PacketScalar& x) - { - m_argImpl.template writePacket<StoreMode>(index, x); - } - -protected: - typename evaluator<ArgType>::nestedType m_argImpl; -}; - -// -------------------- CwiseNullaryOp -------------------- - -template<typename NullaryOp, typename PlainObjectType> -struct evaluator_impl<CwiseNullaryOp<NullaryOp,PlainObjectType> > -{ - typedef CwiseNullaryOp<NullaryOp,PlainObjectType> XprType; - - evaluator_impl(const XprType& n) - : m_functor(n.functor()) - { } - - typedef typename XprType::Index Index; - typedef typename XprType::CoeffReturnType CoeffReturnType; - typedef typename XprType::PacketScalar PacketScalar; - - CoeffReturnType coeff(Index row, Index col) const - { - return m_functor(row, col); - } - - CoeffReturnType coeff(Index index) const - { - return m_functor(index); - } - - template<int LoadMode> - PacketScalar packet(Index row, Index col) const - { - return m_functor.packetOp(row, col); - } - - template<int LoadMode> - PacketScalar packet(Index index) const - { - return m_functor.packetOp(index); - } - -protected: - const NullaryOp m_functor; -}; - -// -------------------- CwiseUnaryOp -------------------- - -template<typename UnaryOp, typename ArgType> -struct evaluator_impl<CwiseUnaryOp<UnaryOp, ArgType> > -{ - typedef CwiseUnaryOp<UnaryOp, ArgType> XprType; - - evaluator_impl(const XprType& op) - : m_functor(op.functor()), - m_argImpl(op.nestedExpression()) - { } - - typedef typename XprType::Index Index; - typedef typename XprType::CoeffReturnType CoeffReturnType; - typedef typename XprType::PacketScalar PacketScalar; - - CoeffReturnType coeff(Index row, Index col) const - { - return m_functor(m_argImpl.coeff(row, col)); - } - - CoeffReturnType coeff(Index index) const - { - return m_functor(m_argImpl.coeff(index)); - } - - template<int LoadMode> - PacketScalar packet(Index row, Index col) const - { - return m_functor.packetOp(m_argImpl.template packet<LoadMode>(row, col)); - } - - template<int LoadMode> - PacketScalar packet(Index index) const - { - return m_functor.packetOp(m_argImpl.template packet<LoadMode>(index)); - } - -protected: - const UnaryOp m_functor; - typename evaluator<ArgType>::nestedType m_argImpl; -}; - -// -------------------- CwiseBinaryOp -------------------- - -template<typename BinaryOp, typename Lhs, typename Rhs> -struct evaluator_impl<CwiseBinaryOp<BinaryOp, Lhs, Rhs> > -{ - typedef CwiseBinaryOp<BinaryOp, Lhs, Rhs> XprType; - - evaluator_impl(const XprType& xpr) - : m_functor(xpr.functor()), - m_lhsImpl(xpr.lhs()), - m_rhsImpl(xpr.rhs()) - { } - - typedef typename XprType::Index Index; - typedef typename XprType::CoeffReturnType CoeffReturnType; - typedef typename XprType::PacketScalar PacketScalar; - - CoeffReturnType coeff(Index row, Index col) const - { - return m_functor(m_lhsImpl.coeff(row, col), m_rhsImpl.coeff(row, col)); - } - - CoeffReturnType coeff(Index index) const - { - return m_functor(m_lhsImpl.coeff(index), m_rhsImpl.coeff(index)); - } - - template<int LoadMode> - PacketScalar packet(Index row, Index col) const - { - return m_functor.packetOp(m_lhsImpl.template packet<LoadMode>(row, col), - m_rhsImpl.template packet<LoadMode>(row, col)); - } - - template<int LoadMode> - PacketScalar packet(Index index) const - { - return m_functor.packetOp(m_lhsImpl.template packet<LoadMode>(index), - m_rhsImpl.template packet<LoadMode>(index)); - } - -protected: - const BinaryOp m_functor; - typename evaluator<Lhs>::nestedType m_lhsImpl; - typename evaluator<Rhs>::nestedType m_rhsImpl; -}; - -// -------------------- CwiseUnaryView -------------------- - -template<typename UnaryOp, typename ArgType> -struct evaluator_impl<CwiseUnaryView<UnaryOp, ArgType> > - : evaluator_impl_base<CwiseUnaryView<UnaryOp, ArgType> > -{ - typedef CwiseUnaryView<UnaryOp, ArgType> XprType; - - evaluator_impl(const XprType& op) - : m_unaryOp(op.functor()), - m_argImpl(op.nestedExpression()) - { } - - typedef typename XprType::Index Index; - typedef typename XprType::Scalar Scalar; - typedef typename XprType::CoeffReturnType CoeffReturnType; - - CoeffReturnType coeff(Index row, Index col) const - { - return m_unaryOp(m_argImpl.coeff(row, col)); - } - - CoeffReturnType coeff(Index index) const - { - return m_unaryOp(m_argImpl.coeff(index)); - } - - Scalar& coeffRef(Index row, Index col) - { - return m_unaryOp(m_argImpl.coeffRef(row, col)); - } - - Scalar& coeffRef(Index index) - { - return m_unaryOp(m_argImpl.coeffRef(index)); - } - -protected: - const UnaryOp m_unaryOp; - typename evaluator<ArgType>::nestedType m_argImpl; -}; - -// -------------------- Map -------------------- - -template<typename Derived, int AccessorsType> -struct evaluator_impl<MapBase<Derived, AccessorsType> > - : evaluator_impl_base<Derived> -{ - typedef MapBase<Derived, AccessorsType> MapType; - typedef Derived XprType; - - typedef typename XprType::PointerType PointerType; - typedef typename XprType::Index Index; - typedef typename XprType::Scalar Scalar; - typedef typename XprType::CoeffReturnType CoeffReturnType; - typedef typename XprType::PacketScalar PacketScalar; - typedef typename XprType::PacketReturnType PacketReturnType; - - evaluator_impl(const XprType& map) - : m_data(const_cast<PointerType>(map.data())), - m_rowStride(map.rowStride()), - m_colStride(map.colStride()) - { } - - enum { - RowsAtCompileTime = XprType::RowsAtCompileTime - }; - - CoeffReturnType coeff(Index row, Index col) const - { - return m_data[col * m_colStride + row * m_rowStride]; - } - - CoeffReturnType coeff(Index index) const - { - return coeff(RowsAtCompileTime == 1 ? 0 : index, - RowsAtCompileTime == 1 ? index : 0); - } - - Scalar& coeffRef(Index row, Index col) - { - return m_data[col * m_colStride + row * m_rowStride]; - } - - Scalar& coeffRef(Index index) - { - return coeffRef(RowsAtCompileTime == 1 ? 0 : index, - RowsAtCompileTime == 1 ? index : 0); - } - - template<int LoadMode> - PacketReturnType packet(Index row, Index col) const - { - PointerType ptr = m_data + row * m_rowStride + col * m_colStride; - return internal::ploadt<PacketScalar, LoadMode>(ptr); - } - - template<int LoadMode> - PacketReturnType packet(Index index) const - { - return packet<LoadMode>(RowsAtCompileTime == 1 ? 0 : index, - RowsAtCompileTime == 1 ? index : 0); - } - - template<int StoreMode> - void writePacket(Index row, Index col, const PacketScalar& x) - { - PointerType ptr = m_data + row * m_rowStride + col * m_colStride; - return internal::pstoret<Scalar, PacketScalar, StoreMode>(ptr, x); - } - - template<int StoreMode> - void writePacket(Index index, const PacketScalar& x) - { - return writePacket<StoreMode>(RowsAtCompileTime == 1 ? 0 : index, - RowsAtCompileTime == 1 ? index : 0, - x); - } - -protected: - PointerType m_data; - int m_rowStride; - int m_colStride; -}; - -template<typename PlainObjectType, int MapOptions, typename StrideType> -struct evaluator_impl<Map<PlainObjectType, MapOptions, StrideType> > - : public evaluator_impl<MapBase<Map<PlainObjectType, MapOptions, StrideType> > > -{ - typedef Map<PlainObjectType, MapOptions, StrideType> XprType; - - evaluator_impl(const XprType& map) - : evaluator_impl<MapBase<XprType> >(map) - { } -}; - -// -------------------- Block -------------------- - -template<typename ArgType, int BlockRows, int BlockCols, bool InnerPanel, - bool HasDirectAccess = internal::has_direct_access<ArgType>::ret> struct block_evaluator; - -template<typename ArgType, int BlockRows, int BlockCols, bool InnerPanel> -struct evaluator_impl<Block<ArgType, BlockRows, BlockCols, InnerPanel> > - : block_evaluator<ArgType, BlockRows, BlockCols, InnerPanel> -{ - typedef Block<ArgType, BlockRows, BlockCols, InnerPanel> XprType; - typedef block_evaluator<ArgType, BlockRows, BlockCols, InnerPanel> block_evaluator_type; - evaluator_impl(const XprType& block) : block_evaluator_type(block) {} -}; - -template<typename ArgType, int BlockRows, int BlockCols, bool InnerPanel> -struct block_evaluator<ArgType, BlockRows, BlockCols, InnerPanel, /*HasDirectAccess*/ false> - : evaluator_impl_base<Block<ArgType, BlockRows, BlockCols, InnerPanel> > -{ - typedef Block<ArgType, BlockRows, BlockCols, InnerPanel> XprType; - - block_evaluator(const XprType& block) - : m_argImpl(block.nestedExpression()), - m_startRow(block.startRow()), - m_startCol(block.startCol()) - { } - - typedef typename XprType::Index Index; - typedef typename XprType::Scalar Scalar; - typedef typename XprType::CoeffReturnType CoeffReturnType; - typedef typename XprType::PacketScalar PacketScalar; - typedef typename XprType::PacketReturnType PacketReturnType; - - enum { - RowsAtCompileTime = XprType::RowsAtCompileTime - }; - - CoeffReturnType coeff(Index row, Index col) const - { - return m_argImpl.coeff(m_startRow.value() + row, m_startCol.value() + col); - } - - CoeffReturnType coeff(Index index) const - { - return coeff(RowsAtCompileTime == 1 ? 0 : index, - RowsAtCompileTime == 1 ? index : 0); - } - - Scalar& coeffRef(Index row, Index col) - { - return m_argImpl.coeffRef(m_startRow.value() + row, m_startCol.value() + col); - } - - Scalar& coeffRef(Index index) - { - return coeffRef(RowsAtCompileTime == 1 ? 0 : index, - RowsAtCompileTime == 1 ? index : 0); - } - - template<int LoadMode> - PacketReturnType packet(Index row, Index col) const - { - return m_argImpl.template packet<LoadMode>(m_startRow.value() + row, m_startCol.value() + col); - } - - template<int LoadMode> - PacketReturnType packet(Index index) const - { - return packet<LoadMode>(RowsAtCompileTime == 1 ? 0 : index, - RowsAtCompileTime == 1 ? index : 0); - } - - template<int StoreMode> - void writePacket(Index row, Index col, const PacketScalar& x) - { - return m_argImpl.template writePacket<StoreMode>(m_startRow.value() + row, m_startCol.value() + col, x); - } - - template<int StoreMode> - void writePacket(Index index, const PacketScalar& x) - { - return writePacket<StoreMode>(RowsAtCompileTime == 1 ? 0 : index, - RowsAtCompileTime == 1 ? index : 0, - x); - } - -protected: - typename evaluator<ArgType>::nestedType m_argImpl; - const variable_if_dynamic<Index, ArgType::RowsAtCompileTime == 1 ? 0 : Dynamic> m_startRow; - const variable_if_dynamic<Index, ArgType::ColsAtCompileTime == 1 ? 0 : Dynamic> m_startCol; -}; - -// TODO: This evaluator does not actually use the child evaluator; -// all action is via the data() as returned by the Block expression. - -template<typename ArgType, int BlockRows, int BlockCols, bool InnerPanel> -struct block_evaluator<ArgType, BlockRows, BlockCols, InnerPanel, /* HasDirectAccess */ true> - : evaluator_impl<MapBase<Block<ArgType, BlockRows, BlockCols, InnerPanel> > > -{ - typedef Block<ArgType, BlockRows, BlockCols, InnerPanel> XprType; - - block_evaluator(const XprType& block) - : evaluator_impl<MapBase<XprType> >(block) - { } -}; - - -// -------------------- Select -------------------- - -template<typename ConditionMatrixType, typename ThenMatrixType, typename ElseMatrixType> -struct evaluator_impl<Select<ConditionMatrixType, ThenMatrixType, ElseMatrixType> > -{ - typedef Select<ConditionMatrixType, ThenMatrixType, ElseMatrixType> XprType; - - evaluator_impl(const XprType& select) - : m_conditionImpl(select.conditionMatrix()), - m_thenImpl(select.thenMatrix()), - m_elseImpl(select.elseMatrix()) - { } - - typedef typename XprType::Index Index; - typedef typename XprType::CoeffReturnType CoeffReturnType; - - CoeffReturnType coeff(Index row, Index col) const - { - if (m_conditionImpl.coeff(row, col)) - return m_thenImpl.coeff(row, col); - else - return m_elseImpl.coeff(row, col); - } - - CoeffReturnType coeff(Index index) const - { - if (m_conditionImpl.coeff(index)) - return m_thenImpl.coeff(index); - else - return m_elseImpl.coeff(index); - } - -protected: - typename evaluator<ConditionMatrixType>::nestedType m_conditionImpl; - typename evaluator<ThenMatrixType>::nestedType m_thenImpl; - typename evaluator<ElseMatrixType>::nestedType m_elseImpl; -}; - - -// -------------------- Replicate -------------------- - -template<typename ArgType, int RowFactor, int ColFactor> -struct evaluator_impl<Replicate<ArgType, RowFactor, ColFactor> > -{ - typedef Replicate<ArgType, RowFactor, ColFactor> XprType; - - evaluator_impl(const XprType& replicate) - : m_argImpl(replicate.nestedExpression()), - m_rows(replicate.nestedExpression().rows()), - m_cols(replicate.nestedExpression().cols()) - { } - - typedef typename XprType::Index Index; - typedef typename XprType::CoeffReturnType CoeffReturnType; - typedef typename XprType::PacketReturnType PacketReturnType; - - CoeffReturnType coeff(Index row, Index col) const - { - // try to avoid using modulo; this is a pure optimization strategy - const Index actual_row = internal::traits<XprType>::RowsAtCompileTime==1 ? 0 - : RowFactor==1 ? row - : row % m_rows.value(); - const Index actual_col = internal::traits<XprType>::ColsAtCompileTime==1 ? 0 - : ColFactor==1 ? col - : col % m_cols.value(); - - return m_argImpl.coeff(actual_row, actual_col); - } - - template<int LoadMode> - PacketReturnType packet(Index row, Index col) const - { - const Index actual_row = internal::traits<XprType>::RowsAtCompileTime==1 ? 0 - : RowFactor==1 ? row - : row % m_rows.value(); - const Index actual_col = internal::traits<XprType>::ColsAtCompileTime==1 ? 0 - : ColFactor==1 ? col - : col % m_cols.value(); - - return m_argImpl.template packet<LoadMode>(actual_row, actual_col); - } - -protected: - typename evaluator<ArgType>::nestedType m_argImpl; - const variable_if_dynamic<Index, XprType::RowsAtCompileTime> m_rows; - const variable_if_dynamic<Index, XprType::ColsAtCompileTime> m_cols; -}; - - -// -------------------- PartialReduxExpr -------------------- -// -// This is a wrapper around the expression object. -// TODO: Find out how to write a proper evaluator without duplicating -// the row() and col() member functions. - -template< typename ArgType, typename MemberOp, int Direction> -struct evaluator_impl<PartialReduxExpr<ArgType, MemberOp, Direction> > -{ - typedef PartialReduxExpr<ArgType, MemberOp, Direction> XprType; - - evaluator_impl(const XprType expr) - : m_expr(expr) - { } - - typedef typename XprType::Index Index; - typedef typename XprType::CoeffReturnType CoeffReturnType; - - CoeffReturnType coeff(Index row, Index col) const - { - return m_expr.coeff(row, col); - } - - CoeffReturnType coeff(Index index) const - { - return m_expr.coeff(index); - } - -protected: - const XprType m_expr; -}; - - -// -------------------- MatrixWrapper and ArrayWrapper -------------------- -// -// evaluator_impl_wrapper_base<T> is a common base class for the -// MatrixWrapper and ArrayWrapper evaluators. - -template<typename XprType> -struct evaluator_impl_wrapper_base - : evaluator_impl_base<XprType> -{ - typedef typename remove_all<typename XprType::NestedExpressionType>::type ArgType; - - evaluator_impl_wrapper_base(const ArgType& arg) : m_argImpl(arg) {} - - typedef typename ArgType::Index Index; - typedef typename ArgType::Scalar Scalar; - typedef typename ArgType::CoeffReturnType CoeffReturnType; - typedef typename ArgType::PacketScalar PacketScalar; - typedef typename ArgType::PacketReturnType PacketReturnType; - - CoeffReturnType coeff(Index row, Index col) const - { - return m_argImpl.coeff(row, col); - } - - CoeffReturnType coeff(Index index) const - { - return m_argImpl.coeff(index); - } - - Scalar& coeffRef(Index row, Index col) - { - return m_argImpl.coeffRef(row, col); - } - - Scalar& coeffRef(Index index) - { - return m_argImpl.coeffRef(index); - } - - template<int LoadMode> - PacketReturnType packet(Index row, Index col) const - { - return m_argImpl.template packet<LoadMode>(row, col); - } - - template<int LoadMode> - PacketReturnType packet(Index index) const - { - return m_argImpl.template packet<LoadMode>(index); - } - - template<int StoreMode> - void writePacket(Index row, Index col, const PacketScalar& x) - { - m_argImpl.template writePacket<StoreMode>(row, col, x); - } - - template<int StoreMode> - void writePacket(Index index, const PacketScalar& x) - { - m_argImpl.template writePacket<StoreMode>(index, x); - } - -protected: - typename evaluator<ArgType>::nestedType m_argImpl; -}; - -template<typename TArgType> -struct evaluator_impl<MatrixWrapper<TArgType> > - : evaluator_impl_wrapper_base<MatrixWrapper<TArgType> > -{ - typedef MatrixWrapper<TArgType> XprType; - - evaluator_impl(const XprType& wrapper) - : evaluator_impl_wrapper_base<MatrixWrapper<TArgType> >(wrapper.nestedExpression()) - { } -}; - -template<typename TArgType> -struct evaluator_impl<ArrayWrapper<TArgType> > - : evaluator_impl_wrapper_base<ArrayWrapper<TArgType> > -{ - typedef ArrayWrapper<TArgType> XprType; - - evaluator_impl(const XprType& wrapper) - : evaluator_impl_wrapper_base<ArrayWrapper<TArgType> >(wrapper.nestedExpression()) - { } -}; - - -// -------------------- Reverse -------------------- - -// defined in Reverse.h: -template<typename PacketScalar, bool ReversePacket> struct reverse_packet_cond; - -template<typename ArgType, int Direction> -struct evaluator_impl<Reverse<ArgType, Direction> > - : evaluator_impl_base<Reverse<ArgType, Direction> > -{ - typedef Reverse<ArgType, Direction> XprType; - typedef typename XprType::Index Index; - typedef typename XprType::Scalar Scalar; - typedef typename XprType::CoeffReturnType CoeffReturnType; - typedef typename XprType::PacketScalar PacketScalar; - typedef typename XprType::PacketReturnType PacketReturnType; - - enum { - PacketSize = internal::packet_traits<Scalar>::size, - IsRowMajor = XprType::IsRowMajor, - IsColMajor = !IsRowMajor, - ReverseRow = (Direction == Vertical) || (Direction == BothDirections), - ReverseCol = (Direction == Horizontal) || (Direction == BothDirections), - OffsetRow = ReverseRow && IsColMajor ? PacketSize : 1, - OffsetCol = ReverseCol && IsRowMajor ? PacketSize : 1, - ReversePacket = (Direction == BothDirections) - || ((Direction == Vertical) && IsColMajor) - || ((Direction == Horizontal) && IsRowMajor) - }; - typedef internal::reverse_packet_cond<PacketScalar,ReversePacket> reverse_packet; - - evaluator_impl(const XprType& reverse) - : m_argImpl(reverse.nestedExpression()), - m_rows(ReverseRow ? reverse.nestedExpression().rows() : 0), - m_cols(ReverseCol ? reverse.nestedExpression().cols() : 0) - { } - - CoeffReturnType coeff(Index row, Index col) const - { - return m_argImpl.coeff(ReverseRow ? m_rows.value() - row - 1 : row, - ReverseCol ? m_cols.value() - col - 1 : col); - } - - CoeffReturnType coeff(Index index) const - { - return m_argImpl.coeff(m_rows.value() * m_cols.value() - index - 1); - } - - Scalar& coeffRef(Index row, Index col) - { - return m_argImpl.coeffRef(ReverseRow ? m_rows.value() - row - 1 : row, - ReverseCol ? m_cols.value() - col - 1 : col); - } - - Scalar& coeffRef(Index index) - { - return m_argImpl.coeffRef(m_rows.value() * m_cols.value() - index - 1); - } - - template<int LoadMode> - PacketScalar packet(Index row, Index col) const - { - return reverse_packet::run(m_argImpl.template packet<LoadMode>( - ReverseRow ? m_rows.value() - row - OffsetRow : row, - ReverseCol ? m_cols.value() - col - OffsetCol : col)); - } - - template<int LoadMode> - PacketScalar packet(Index index) const - { - return preverse(m_argImpl.template packet<LoadMode>(m_rows.value() * m_cols.value() - index - PacketSize)); - } - - template<int LoadMode> - void writePacket(Index row, Index col, const PacketScalar& x) - { - m_argImpl.template writePacket<LoadMode>( - ReverseRow ? m_rows.value() - row - OffsetRow : row, - ReverseCol ? m_cols.value() - col - OffsetCol : col, - reverse_packet::run(x)); - } - - template<int LoadMode> - void writePacket(Index index, const PacketScalar& x) - { - m_argImpl.template writePacket<LoadMode> - (m_rows.value() * m_cols.value() - index - PacketSize, preverse(x)); - } - -protected: - typename evaluator<ArgType>::nestedType m_argImpl; - - // If we do not reverse rows, then we do not need to know the number of rows; same for columns - const variable_if_dynamic<Index, ReverseRow ? ArgType::RowsAtCompileTime : 0> m_rows; - const variable_if_dynamic<Index, ReverseCol ? ArgType::ColsAtCompileTime : 0> m_cols; -}; - - -// -------------------- Diagonal -------------------- - -template<typename ArgType, int DiagIndex> -struct evaluator_impl<Diagonal<ArgType, DiagIndex> > - : evaluator_impl_base<Diagonal<ArgType, DiagIndex> > -{ - typedef Diagonal<ArgType, DiagIndex> XprType; - - evaluator_impl(const XprType& diagonal) - : m_argImpl(diagonal.nestedExpression()), - m_index(diagonal.index()) - { } - - typedef typename XprType::Index Index; - typedef typename XprType::Scalar Scalar; - typedef typename XprType::CoeffReturnType CoeffReturnType; - - CoeffReturnType coeff(Index row, Index) const - { - return m_argImpl.coeff(row + rowOffset(), row + colOffset()); - } - - CoeffReturnType coeff(Index index) const - { - return m_argImpl.coeff(index + rowOffset(), index + colOffset()); - } - - Scalar& coeffRef(Index row, Index) - { - return m_argImpl.coeffRef(row + rowOffset(), row + colOffset()); - } - - Scalar& coeffRef(Index index) - { - return m_argImpl.coeffRef(index + rowOffset(), index + colOffset()); - } - -protected: - typename evaluator<ArgType>::nestedType m_argImpl; - const internal::variable_if_dynamicindex<Index, XprType::DiagIndex> m_index; - -private: - EIGEN_STRONG_INLINE Index rowOffset() const { return m_index.value() > 0 ? 0 : -m_index.value(); } - EIGEN_STRONG_INLINE Index colOffset() const { return m_index.value() > 0 ? m_index.value() : 0; } -}; - -} // namespace internal - -} // end namespace Eigen - -#endif // EIGEN_COREEVALUATORS_H |