| // This file is part of Eigen, a lightweight C++ template library |
| // for linear algebra. |
| // |
| // Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com> |
| // |
| // 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_CXX11_TENSOR_TENSOR_EVALUATOR_H |
| #define EIGEN_CXX11_TENSOR_TENSOR_EVALUATOR_H |
| |
| namespace Eigen { |
| |
| /** \class TensorEvaluator |
| * \ingroup CXX11_Tensor_Module |
| * |
| * \brief The tensor evaluator classes. |
| * |
| * These classes are responsible for the evaluation of the tensor expression. |
| * |
| * TODO: add support for more types of expressions, in particular expressions |
| * leading to lvalues (slicing, reshaping, etc...) |
| */ |
| |
| // Generic evaluator |
| template <typename Derived, typename Device> |
| struct TensorEvaluator { |
| typedef typename Derived::Index Index; |
| typedef typename Derived::Scalar Scalar; |
| typedef typename Derived::Scalar CoeffReturnType; |
| typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType; |
| typedef typename Derived::Dimensions Dimensions; |
| |
| // NumDimensions is -1 for variable dim tensors |
| static const int NumCoords = internal::traits<Derived>::NumDimensions; |
| static const int SafeNumCoords = NumCoords >= 0 ? NumCoords : 0; |
| |
| enum { |
| IsAligned = Derived::IsAligned, |
| PacketAccess = Derived::PacketAccess, |
| BlockAccess = internal::is_arithmetic< |
| typename internal::remove_const<Scalar>::type>::value && |
| NumCoords >= 0, |
| Layout = Derived::Layout, |
| CoordAccess = NumCoords >= 0, |
| RawAccess = true |
| }; |
| |
| typedef typename internal::TensorBlock< |
| Index, typename internal::remove_const<Scalar>::type, SafeNumCoords, |
| Layout> |
| TensorBlock; |
| typedef typename internal::TensorBlockReader< |
| Index, typename internal::remove_const<Scalar>::type, SafeNumCoords, |
| Layout, PacketAccess> |
| TensorBlockReader; |
| typedef typename internal::TensorBlockWriter< |
| Index, typename internal::remove_const<Scalar>::type, SafeNumCoords, |
| Layout, PacketAccess> |
| TensorBlockWriter; |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorEvaluator(const Derived& m, |
| const Device& device) |
| : m_data(const_cast<Scalar*>(m.data())), |
| m_dims(m.dimensions()), |
| m_device(device) {} |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const Dimensions& dimensions() const { |
| return m_dims; |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool evalSubExprsIfNeeded( |
| CoeffReturnType* dest) { |
| if (dest) { |
| m_device.memcpy((void*)dest, m_data, sizeof(Scalar) * m_dims.TotalSize()); |
| return false; |
| } |
| return true; |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void cleanup() {} |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE CoeffReturnType |
| coeff(Index index) const { |
| eigen_assert(m_data); |
| return m_data[index]; |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar& coeffRef(Index index) { |
| eigen_assert(m_data); |
| return m_data[index]; |
| } |
| |
| template <int LoadMode> |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketReturnType |
| packet(Index index) const { |
| return internal::ploadt<PacketReturnType, LoadMode>(m_data + index); |
| } |
| |
| template <int StoreMode> |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket( |
| Index index, const PacketReturnType& x) { |
| return internal::pstoret<Scalar, PacketReturnType, StoreMode>( |
| m_data + index, x); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE CoeffReturnType |
| coeff(const array<Index, SafeNumCoords>& coords) const { |
| eigen_assert(m_data); |
| if (static_cast<int>(Layout) == static_cast<int>(ColMajor)) { |
| return m_data[m_dims.IndexOfColMajor(coords)]; |
| } else { |
| return m_data[m_dims.IndexOfRowMajor(coords)]; |
| } |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar& coeffRef( |
| const array<Index, SafeNumCoords>& coords) { |
| eigen_assert(m_data); |
| if (static_cast<int>(Layout) == static_cast<int>(ColMajor)) { |
| return m_data[m_dims.IndexOfColMajor(coords)]; |
| } else { |
| return m_data[m_dims.IndexOfRowMajor(coords)]; |
| } |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void getResourceRequirements( |
| std::vector<internal::TensorOpResourceRequirements>* resources) const {} |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorOpCost costPerCoeff(bool vectorized) const { |
| return TensorOpCost(sizeof(CoeffReturnType), 0, 0, vectorized, |
| internal::unpacket_traits<PacketReturnType>::size); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void block(TensorBlock* block) const { |
| assert(m_data != NULL); |
| TensorBlockReader::Run(block, m_data); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writeBlock( |
| const TensorBlock& block) { |
| assert(m_data != NULL); |
| TensorBlockWriter::Run(block, m_data); |
| } |
| |
| EIGEN_DEVICE_FUNC Scalar* data() const { return m_data; } |
| |
| protected: |
| Scalar* m_data; |
| Dimensions m_dims; |
| const Device& m_device; |
| }; |
| |
| namespace { |
| template <typename T> |
| EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE T loadConstant(const T* address) { |
| return *address; |
| } |
| // Use the texture cache on CUDA devices whenever possible |
| #if defined(__CUDA_ARCH__) && __CUDA_ARCH__ >= 350 |
| template <> |
| EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE float loadConstant(const float* address) { |
| return __ldg(address); |
| } |
| template <> |
| EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE double loadConstant( |
| const double* address) { |
| return __ldg(address); |
| } |
| #endif |
| } |
| |
| // Default evaluator for rvalues |
| template <typename Derived, typename Device> |
| struct TensorEvaluator<const Derived, Device> { |
| typedef typename Derived::Index Index; |
| typedef typename Derived::Scalar Scalar; |
| typedef typename Derived::Scalar CoeffReturnType; |
| typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType; |
| typedef typename Derived::Dimensions Dimensions; |
| |
| // NumDimensions is -1 for variable dim tensors |
| static const int NumCoords = internal::traits<Derived>::NumDimensions; |
| static const int SafeNumCoords = NumCoords >= 0 ? NumCoords : 0; |
| |
| enum { |
| IsAligned = Derived::IsAligned, |
| PacketAccess = Derived::PacketAccess, |
| BlockAccess = internal::is_arithmetic< |
| typename internal::remove_const<Scalar>::type>::value && |
| NumCoords >= 0, |
| Layout = Derived::Layout, |
| CoordAccess = NumCoords >= 0, |
| RawAccess = true |
| }; |
| |
| // TODO(andydavis) Add block/writeBlock accessors to Tensor and TensorMap so |
| // we can default BlockAccess to true above. |
| typedef typename internal::TensorBlock< |
| Index, typename internal::remove_const<Scalar>::type, SafeNumCoords, |
| Layout> |
| TensorBlock; |
| typedef typename internal::TensorBlockReader< |
| Index, typename internal::remove_const<Scalar>::type, SafeNumCoords, |
| Layout, PacketAccess> |
| TensorBlockReader; |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorEvaluator(const Derived& m, |
| const Device& device) |
| : m_data(m.data()), m_dims(m.dimensions()), m_device(device) {} |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE const Dimensions& dimensions() const { |
| return m_dims; |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool evalSubExprsIfNeeded( |
| CoeffReturnType* data) { |
| if (internal::is_arithmetic< |
| typename internal::remove_const<Scalar>::type>::value && |
| data) { |
| m_device.memcpy((void*)data, m_data, m_dims.TotalSize() * sizeof(Scalar)); |
| return false; |
| } |
| return true; |
| } |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void cleanup() {} |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE CoeffReturnType |
| coeff(Index index) const { |
| eigen_assert(m_data); |
| return loadConstant(m_data + index); |
| } |
| |
| template <int LoadMode> |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketReturnType |
| packet(Index index) const { |
| return internal::ploadt_ro<PacketReturnType, LoadMode>(m_data + index); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE CoeffReturnType |
| coeff(const array<Index, SafeNumCoords>& coords) const { |
| eigen_assert(m_data); |
| const Index index = (static_cast<int>(Layout) == static_cast<int>(ColMajor)) |
| ? m_dims.IndexOfColMajor(coords) |
| : m_dims.IndexOfRowMajor(coords); |
| return loadConstant(m_data + index); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void getResourceRequirements( |
| std::vector<internal::TensorOpResourceRequirements>* resources) const {} |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorOpCost |
| costPerCoeff(bool vectorized) const { |
| return TensorOpCost(sizeof(CoeffReturnType), 0, 0, vectorized, |
| internal::unpacket_traits<PacketReturnType>::size); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void block(TensorBlock* block) const { |
| assert(m_data != NULL); |
| TensorBlockReader::Run(block, m_data); |
| } |
| |
| EIGEN_DEVICE_FUNC const Scalar* data() const { return m_data; } |
| |
| protected: |
| const Scalar* m_data; |
| Dimensions m_dims; |
| const Device& m_device; |
| }; |
| |
| // -------------------- CwiseNullaryOp -------------------- |
| |
| template <typename NullaryOp, typename ArgType, typename Device> |
| struct TensorEvaluator<const TensorCwiseNullaryOp<NullaryOp, ArgType>, Device> { |
| typedef TensorCwiseNullaryOp<NullaryOp, ArgType> XprType; |
| |
| enum { |
| IsAligned = true, |
| PacketAccess = internal::functor_traits<NullaryOp>::PacketAccess, |
| BlockAccess = false, |
| Layout = TensorEvaluator<ArgType, Device>::Layout, |
| CoordAccess = false, // to be implemented |
| RawAccess = false |
| }; |
| |
| EIGEN_DEVICE_FUNC |
| TensorEvaluator(const XprType& op, const Device& device) |
| : m_functor(op.functor()), m_argImpl(op.nestedExpression(), device), m_wrapper() {} |
| |
| typedef typename XprType::Index Index; |
| typedef typename XprType::Scalar Scalar; |
| typedef typename internal::traits<XprType>::Scalar CoeffReturnType; |
| typedef typename TensorEvaluator<ArgType, Device>::Dimensions Dimensions; |
| typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType; |
| static const int PacketSize = internal::unpacket_traits<PacketReturnType>::size; |
| |
| EIGEN_DEVICE_FUNC const Dimensions& dimensions() const { |
| return m_argImpl.dimensions(); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool evalSubExprsIfNeeded( |
| CoeffReturnType*) { |
| return true; |
| } |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void cleanup() {} |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType coeff(Index index) const { |
| return m_wrapper(m_functor, index); |
| } |
| template <int LoadMode> |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketReturnType |
| packet(Index index) const { |
| return m_wrapper.template packetOp<PacketReturnType, Index>(m_functor, index); |
| } |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType* data() const { return NULL; } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorOpCost costPerCoeff(bool vectorized) const { |
| const double functor_cost = internal::functor_traits<NullaryOp>::Cost; |
| return m_argImpl.costPerCoeff(vectorized) + |
| TensorOpCost(0, 0, functor_cost, vectorized, PacketSize); |
| } |
| |
| private: |
| const NullaryOp m_functor; |
| TensorEvaluator<ArgType, Device> m_argImpl; |
| const internal::nullary_wrapper<CoeffReturnType, NullaryOp> m_wrapper; |
| }; |
| |
| // -------------------- CwiseUnaryOp -------------------- |
| |
| template <typename UnaryOp, typename ArgType, typename Device> |
| struct TensorEvaluator<const TensorCwiseUnaryOp<UnaryOp, ArgType>, Device> { |
| typedef TensorCwiseUnaryOp<UnaryOp, ArgType> XprType; |
| |
| enum { |
| IsAligned = TensorEvaluator<ArgType, Device>::IsAligned, |
| PacketAccess = TensorEvaluator<ArgType, Device>::PacketAccess & |
| internal::functor_traits<UnaryOp>::PacketAccess, |
| BlockAccess = false, |
| Layout = TensorEvaluator<ArgType, Device>::Layout, |
| CoordAccess = false, // to be implemented |
| RawAccess = false |
| }; |
| |
| EIGEN_DEVICE_FUNC TensorEvaluator(const XprType& op, const Device& device) |
| : m_functor(op.functor()), m_argImpl(op.nestedExpression(), device) {} |
| |
| typedef typename XprType::Index Index; |
| typedef typename XprType::Scalar Scalar; |
| typedef typename internal::traits<XprType>::Scalar CoeffReturnType; |
| typedef typename TensorEvaluator<ArgType, Device>::Dimensions Dimensions; |
| typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType; |
| static const int PacketSize = internal::unpacket_traits<PacketReturnType>::size; |
| |
| EIGEN_DEVICE_FUNC const Dimensions& dimensions() const { |
| return m_argImpl.dimensions(); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool evalSubExprsIfNeeded(Scalar*) { |
| m_argImpl.evalSubExprsIfNeeded(NULL); |
| return true; |
| } |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void cleanup() { m_argImpl.cleanup(); } |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType coeff(Index index) const { |
| return m_functor(m_argImpl.coeff(index)); |
| } |
| |
| template <int LoadMode> |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketReturnType |
| packet(Index index) const { |
| return m_functor.packetOp(m_argImpl.template packet<LoadMode>(index)); |
| } |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType* data() const { return NULL; } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorOpCost costPerCoeff(bool vectorized) const { |
| const double functor_cost = internal::functor_traits<UnaryOp>::Cost; |
| return m_argImpl.costPerCoeff(vectorized) + |
| TensorOpCost(0, 0, functor_cost, vectorized, PacketSize); |
| } |
| |
| private: |
| const UnaryOp m_functor; |
| TensorEvaluator<ArgType, Device> m_argImpl; |
| }; |
| |
| // -------------------- CwiseBinaryOp -------------------- |
| |
| template <typename BinaryOp, typename LeftArgType, typename RightArgType, |
| typename Device> |
| struct TensorEvaluator< |
| const TensorCwiseBinaryOp<BinaryOp, LeftArgType, RightArgType>, Device> { |
| typedef TensorCwiseBinaryOp<BinaryOp, LeftArgType, RightArgType> XprType; |
| |
| enum { |
| IsAligned = TensorEvaluator<LeftArgType, Device>::IsAligned & |
| TensorEvaluator<RightArgType, Device>::IsAligned, |
| PacketAccess = TensorEvaluator<LeftArgType, Device>::PacketAccess & |
| TensorEvaluator<RightArgType, Device>::PacketAccess & |
| internal::functor_traits<BinaryOp>::PacketAccess, |
| BlockAccess = false, |
| Layout = TensorEvaluator<LeftArgType, Device>::Layout, |
| CoordAccess = false, // to be implemented |
| RawAccess = false |
| }; |
| |
| EIGEN_DEVICE_FUNC TensorEvaluator(const XprType& op, const Device& device) |
| : m_functor(op.functor()), |
| m_leftImpl(op.lhsExpression(), device), |
| m_rightImpl(op.rhsExpression(), device) { |
| EIGEN_STATIC_ASSERT( |
| (static_cast<int>(TensorEvaluator<LeftArgType, Device>::Layout) == |
| static_cast<int>(TensorEvaluator<RightArgType, Device>::Layout) || |
| internal::traits<XprType>::NumDimensions <= 1), |
| YOU_MADE_A_PROGRAMMING_MISTAKE); |
| eigen_assert( |
| dimensions_match(m_leftImpl.dimensions(), m_rightImpl.dimensions())); |
| } |
| |
| typedef typename XprType::Index Index; |
| typedef typename XprType::Scalar Scalar; |
| typedef typename internal::traits<XprType>::Scalar CoeffReturnType; |
| typedef typename TensorEvaluator<LeftArgType, Device>::Dimensions Dimensions; |
| typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType; |
| static const int PacketSize = internal::unpacket_traits<PacketReturnType>::size; |
| |
| EIGEN_DEVICE_FUNC const Dimensions& dimensions() const { |
| // TODO: use right impl instead if right impl dimensions are known at |
| // compile time. |
| return m_leftImpl.dimensions(); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool evalSubExprsIfNeeded( |
| CoeffReturnType*) { |
| m_leftImpl.evalSubExprsIfNeeded(NULL); |
| m_rightImpl.evalSubExprsIfNeeded(NULL); |
| return true; |
| } |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void cleanup() { |
| m_leftImpl.cleanup(); |
| m_rightImpl.cleanup(); |
| } |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType coeff(Index index) const { |
| return m_functor(m_leftImpl.coeff(index), m_rightImpl.coeff(index)); |
| } |
| template <int LoadMode> |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketReturnType |
| packet(Index index) const { |
| return m_functor.packetOp(m_leftImpl.template packet<LoadMode>(index), |
| m_rightImpl.template packet<LoadMode>(index)); |
| } |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType* data() const { return NULL; } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorOpCost |
| costPerCoeff(bool vectorized) const { |
| const double functor_cost = internal::functor_traits<BinaryOp>::Cost; |
| return m_leftImpl.costPerCoeff(vectorized) + |
| m_rightImpl.costPerCoeff(vectorized) + |
| TensorOpCost(0, 0, functor_cost, vectorized, PacketSize); |
| } |
| |
| private: |
| const BinaryOp m_functor; |
| TensorEvaluator<LeftArgType, Device> m_leftImpl; |
| TensorEvaluator<RightArgType, Device> m_rightImpl; |
| }; |
| |
| // -------------------- CwiseTernaryOp -------------------- |
| |
| template<typename TernaryOp, typename Arg1Type, typename Arg2Type, typename Arg3Type, typename Device> |
| struct TensorEvaluator<const TensorCwiseTernaryOp<TernaryOp, Arg1Type, Arg2Type, Arg3Type>, Device> |
| { |
| typedef TensorCwiseTernaryOp<TernaryOp, Arg1Type, Arg2Type, Arg3Type> XprType; |
| |
| enum { |
| IsAligned = TensorEvaluator<Arg1Type, Device>::IsAligned & TensorEvaluator<Arg2Type, Device>::IsAligned & TensorEvaluator<Arg3Type, Device>::IsAligned, |
| PacketAccess = TensorEvaluator<Arg1Type, Device>::PacketAccess & TensorEvaluator<Arg2Type, Device>::PacketAccess & TensorEvaluator<Arg3Type, Device>::PacketAccess & |
| internal::functor_traits<TernaryOp>::PacketAccess, |
| BlockAccess = false, |
| Layout = TensorEvaluator<Arg1Type, Device>::Layout, |
| CoordAccess = false, // to be implemented |
| RawAccess = false |
| }; |
| |
| EIGEN_DEVICE_FUNC TensorEvaluator(const XprType& op, const Device& device) |
| : m_functor(op.functor()), |
| m_arg1Impl(op.arg1Expression(), device), |
| m_arg2Impl(op.arg2Expression(), device), |
| m_arg3Impl(op.arg3Expression(), device) |
| { |
| EIGEN_STATIC_ASSERT((static_cast<int>(TensorEvaluator<Arg1Type, Device>::Layout) == static_cast<int>(TensorEvaluator<Arg3Type, Device>::Layout) || internal::traits<XprType>::NumDimensions <= 1), YOU_MADE_A_PROGRAMMING_MISTAKE); |
| |
| EIGEN_STATIC_ASSERT((internal::is_same<typename internal::traits<Arg1Type>::StorageKind, |
| typename internal::traits<Arg2Type>::StorageKind>::value), |
| STORAGE_KIND_MUST_MATCH) |
| EIGEN_STATIC_ASSERT((internal::is_same<typename internal::traits<Arg1Type>::StorageKind, |
| typename internal::traits<Arg3Type>::StorageKind>::value), |
| STORAGE_KIND_MUST_MATCH) |
| EIGEN_STATIC_ASSERT((internal::is_same<typename internal::traits<Arg1Type>::Index, |
| typename internal::traits<Arg2Type>::Index>::value), |
| STORAGE_INDEX_MUST_MATCH) |
| EIGEN_STATIC_ASSERT((internal::is_same<typename internal::traits<Arg1Type>::Index, |
| typename internal::traits<Arg3Type>::Index>::value), |
| STORAGE_INDEX_MUST_MATCH) |
| |
| eigen_assert(dimensions_match(m_arg1Impl.dimensions(), m_arg2Impl.dimensions()) && dimensions_match(m_arg1Impl.dimensions(), m_arg3Impl.dimensions())); |
| } |
| |
| typedef typename XprType::Index Index; |
| typedef typename XprType::Scalar Scalar; |
| typedef typename internal::traits<XprType>::Scalar CoeffReturnType; |
| typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType; |
| static const int PacketSize = internal::unpacket_traits<PacketReturnType>::size; |
| typedef typename TensorEvaluator<Arg1Type, Device>::Dimensions Dimensions; |
| |
| EIGEN_DEVICE_FUNC const Dimensions& dimensions() const |
| { |
| // TODO: use arg2 or arg3 dimensions if they are known at compile time. |
| return m_arg1Impl.dimensions(); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool evalSubExprsIfNeeded(CoeffReturnType*) { |
| m_arg1Impl.evalSubExprsIfNeeded(NULL); |
| m_arg2Impl.evalSubExprsIfNeeded(NULL); |
| m_arg3Impl.evalSubExprsIfNeeded(NULL); |
| return true; |
| } |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void cleanup() { |
| m_arg1Impl.cleanup(); |
| m_arg2Impl.cleanup(); |
| m_arg3Impl.cleanup(); |
| } |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType coeff(Index index) const |
| { |
| return m_functor(m_arg1Impl.coeff(index), m_arg2Impl.coeff(index), m_arg3Impl.coeff(index)); |
| } |
| template<int LoadMode> |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketReturnType packet(Index index) const |
| { |
| return m_functor.packetOp(m_arg1Impl.template packet<LoadMode>(index), |
| m_arg2Impl.template packet<LoadMode>(index), |
| m_arg3Impl.template packet<LoadMode>(index)); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorOpCost |
| costPerCoeff(bool vectorized) const { |
| const double functor_cost = internal::functor_traits<TernaryOp>::Cost; |
| return m_arg1Impl.costPerCoeff(vectorized) + |
| m_arg2Impl.costPerCoeff(vectorized) + |
| m_arg3Impl.costPerCoeff(vectorized) + |
| TensorOpCost(0, 0, functor_cost, vectorized, PacketSize); |
| } |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType* data() const { return NULL; } |
| |
| private: |
| const TernaryOp m_functor; |
| TensorEvaluator<Arg1Type, Device> m_arg1Impl; |
| TensorEvaluator<Arg1Type, Device> m_arg2Impl; |
| TensorEvaluator<Arg3Type, Device> m_arg3Impl; |
| }; |
| |
| // -------------------- SelectOp -------------------- |
| |
| template <typename IfArgType, typename ThenArgType, typename ElseArgType, |
| typename Device> |
| struct TensorEvaluator< |
| const TensorSelectOp<IfArgType, ThenArgType, ElseArgType>, Device> { |
| typedef TensorSelectOp<IfArgType, ThenArgType, ElseArgType> XprType; |
| typedef typename XprType::Scalar Scalar; |
| |
| enum { |
| IsAligned = TensorEvaluator<ThenArgType, Device>::IsAligned & |
| TensorEvaluator<ElseArgType, Device>::IsAligned, |
| PacketAccess = TensorEvaluator<ThenArgType, Device>::PacketAccess & |
| TensorEvaluator<ElseArgType, Device>::PacketAccess & |
| internal::packet_traits<Scalar>::HasBlend, |
| BlockAccess = false, |
| Layout = TensorEvaluator<IfArgType, Device>::Layout, |
| CoordAccess = false, // to be implemented |
| RawAccess = false |
| }; |
| |
| EIGEN_DEVICE_FUNC TensorEvaluator(const XprType& op, const Device& device) |
| : m_condImpl(op.ifExpression(), device), |
| m_thenImpl(op.thenExpression(), device), |
| m_elseImpl(op.elseExpression(), device) { |
| EIGEN_STATIC_ASSERT( |
| (static_cast<int>(TensorEvaluator<IfArgType, Device>::Layout) == |
| static_cast<int>(TensorEvaluator<ThenArgType, Device>::Layout)), |
| YOU_MADE_A_PROGRAMMING_MISTAKE); |
| EIGEN_STATIC_ASSERT( |
| (static_cast<int>(TensorEvaluator<IfArgType, Device>::Layout) == |
| static_cast<int>(TensorEvaluator<ElseArgType, Device>::Layout)), |
| YOU_MADE_A_PROGRAMMING_MISTAKE); |
| eigen_assert( |
| dimensions_match(m_condImpl.dimensions(), m_thenImpl.dimensions())); |
| eigen_assert( |
| dimensions_match(m_thenImpl.dimensions(), m_elseImpl.dimensions())); |
| } |
| |
| typedef typename XprType::Index Index; |
| typedef typename internal::traits<XprType>::Scalar CoeffReturnType; |
| typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType; |
| typedef typename TensorEvaluator<IfArgType, Device>::Dimensions Dimensions; |
| |
| EIGEN_DEVICE_FUNC const Dimensions& dimensions() const { |
| // TODO: use then or else impl instead if they happen to be known at compile |
| // time. |
| return m_condImpl.dimensions(); |
| } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool evalSubExprsIfNeeded( |
| CoeffReturnType*) { |
| m_condImpl.evalSubExprsIfNeeded(NULL); |
| m_thenImpl.evalSubExprsIfNeeded(NULL); |
| m_elseImpl.evalSubExprsIfNeeded(NULL); |
| return true; |
| } |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void cleanup() { |
| m_condImpl.cleanup(); |
| m_thenImpl.cleanup(); |
| m_elseImpl.cleanup(); |
| } |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType coeff(Index index) const { |
| return m_condImpl.coeff(index) ? m_thenImpl.coeff(index) |
| : m_elseImpl.coeff(index); |
| } |
| template <int LoadMode> |
| EIGEN_DEVICE_FUNC PacketReturnType packet(Index index) const { |
| const int PacketSize = internal::unpacket_traits<PacketReturnType>::size; |
| internal::Selector<PacketSize> select; |
| for (Index i = 0; i < PacketSize; ++i) { |
| select.select[i] = m_condImpl.coeff(index + i); |
| } |
| return internal::pblend(select, m_thenImpl.template packet<LoadMode>(index), |
| m_elseImpl.template packet<LoadMode>(index)); |
| } |
| |
| EIGEN_DEVICE_FUNC CoeffReturnType* data() const { return NULL; } |
| |
| EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorOpCost |
| costPerCoeff(bool vectorized) const { |
| return m_condImpl.costPerCoeff(vectorized) + |
| m_thenImpl.costPerCoeff(vectorized) |
| .cwiseMax(m_elseImpl.costPerCoeff(vectorized)); |
| } |
| |
| private: |
| TensorEvaluator<IfArgType, Device> m_condImpl; |
| TensorEvaluator<ThenArgType, Device> m_thenImpl; |
| TensorEvaluator<ElseArgType, Device> m_elseImpl; |
| }; |
| |
| } // end namespace Eigen |
| |
| #endif // EIGEN_CXX11_TENSOR_TENSOR_EVALUATOR_H |
