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eigen/mirror/83184e67da29564662761cd25d477d8885be13a2/./Eigen/src/Core/CoreEvaluators.h
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// 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) 2011-2014 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/.
// SPDX-License-Identifier: MPL-2.0
#ifndef EIGEN_COREEVALUATORS_H
#define EIGEN_COREEVALUATORS_H
// IWYU pragma: private
#include "./InternalHeaderCheck.h"
namespace Eigen {
namespace internal {
// This class returns the evaluator kind from the expression storage kind.
// Default assumes index based accessors
template <typename StorageKind>
struct storage_kind_to_evaluator_kind {
using Kind = IndexBased;
};
// This class returns the evaluator shape from the expression storage kind.
// It can be Dense, Sparse, Triangular, Diagonal, SelfAdjoint, Band, etc.
template <typename StorageKind>
struct storage_kind_to_shape;
template <>
struct storage_kind_to_shape<Dense> {
using Shape = DenseShape;
};
template <>
struct storage_kind_to_shape<SolverStorage> {
using Shape = SolverShape;
};
template <>
struct storage_kind_to_shape<PermutationStorage> {
using Shape = PermutationShape;
};
template <>
struct storage_kind_to_shape<TranspositionsStorage> {
using Shape = TranspositionsShape;
};
// Evaluators have to be specialized with respect to various criteria such as:
// - storage/structure/shape
// - scalar type
// - etc.
// Therefore, we need specialization of evaluator providing additional template arguments for each kind of evaluators.
// We currently distinguish the following kind of evaluators:
// - unary_evaluator for expressions taking only one arguments (CwiseUnaryOp, CwiseUnaryView, Transpose,
// MatrixWrapper, ArrayWrapper, Reverse, Replicate)
// - binary_evaluator for expression taking two arguments (CwiseBinaryOp)
// - ternary_evaluator for expression taking three arguments (CwiseTernaryOp)
// - product_evaluator for linear algebra products (Product); special case of binary_evaluator because it requires
// additional tags for dispatching.
// - mapbase_evaluator for Map, Block, Ref
// - block_evaluator for Block (special dispatching to a mapbase_evaluator or unary_evaluator)
template <typename T, typename Arg1Kind = typename evaluator_traits<typename T::Arg1>::Kind,
typename Arg2Kind = typename evaluator_traits<typename T::Arg2>::Kind,
typename Arg3Kind = typename evaluator_traits<typename T::Arg3>::Kind,
typename Arg1Scalar = typename traits<typename T::Arg1>::Scalar,
typename Arg2Scalar = typename traits<typename T::Arg2>::Scalar,
typename Arg3Scalar = typename traits<typename T::Arg3>::Scalar>
struct ternary_evaluator;
template <typename T, typename LhsKind = typename evaluator_traits<typename T::Lhs>::Kind,
typename RhsKind = typename evaluator_traits<typename T::Rhs>::Kind,
typename LhsScalar = typename traits<typename T::Lhs>::Scalar,
typename RhsScalar = typename traits<typename T::Rhs>::Scalar>
struct binary_evaluator;
template <typename T, typename Kind = typename evaluator_traits<typename T::NestedExpression>::Kind,
typename Scalar = typename T::Scalar>
struct unary_evaluator;
// evaluator_traits<T> contains traits for evaluator<T>
template <typename T>
struct evaluator_traits_base {
// by default, get evaluator kind and shape from storage
using Kind = typename storage_kind_to_evaluator_kind<typename traits<T>::StorageKind>::Kind;
using Shape = typename storage_kind_to_shape<typename traits<T>::StorageKind>::Shape;
};
// Default evaluator traits
template <typename T>
struct evaluator_traits : public evaluator_traits_base<T> {};
template <typename T, typename Shape = typename evaluator_traits<T>::Shape>
struct evaluator_assume_aliasing : std::false_type {};
// By default, we assume a unary expression:
template <typename T>
struct evaluator : public unary_evaluator<T> {
using Base = unary_evaluator<T>;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit evaluator(const T& xpr) : Base(xpr) {}
};
// TODO: Think about const-correctness
template <typename T>
struct evaluator<const T> : evaluator<T> {
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit evaluator(const T& xpr) : evaluator<T>(xpr) {}
};
// ---------- base class for all evaluators ----------
template <typename ExpressionType>
struct evaluator_base {
// TODO: find a way to avoid propagating all these traits. They are currently only needed to handle
// outer,inner indices.
using ExpressionTraits = traits<ExpressionType>;
enum { Alignment = 0 };
// Spell out deleted copy operations instead of inheriting from an empty helper:
// an extra base can kill EBO and make complex evaluators larger than they should be.
EIGEN_DEVICE_FUNC constexpr evaluator_base() = default;
evaluator_base(const evaluator_base&) = delete;
evaluator_base& operator=(const evaluator_base&) = delete;
};
// -------------------- Matrix and Array --------------------
//
// evaluator<PlainObjectBase> is a common base class for the
// Matrix and Array evaluators.
// Here we directly specialize evaluator. This is not really a unary expression, and it is, by definition, dense,
// so no need for more sophisticated dispatching.
// this helper permits to completely eliminate m_outerStride if it is known at compiletime.
template <typename Scalar, int OuterStride>
class plainobjectbase_evaluator_data {
public:
EIGEN_DEVICE_FUNC constexpr plainobjectbase_evaluator_data(const Scalar* ptr, Index outerStride) : data(ptr) {
#ifndef EIGEN_INTERNAL_DEBUGGING
EIGEN_UNUSED_VARIABLE(outerStride);
#endif
eigen_internal_assert(outerStride == OuterStride);
}
EIGEN_DEVICE_FUNC constexpr Index outerStride() const noexcept { return OuterStride; }
const Scalar* data;
};
template <typename Scalar>
class plainobjectbase_evaluator_data<Scalar, Dynamic> {
public:
EIGEN_DEVICE_FUNC constexpr plainobjectbase_evaluator_data(const Scalar* ptr, Index outerStride)
: data(ptr), m_outerStride(outerStride) {}
EIGEN_DEVICE_FUNC constexpr Index outerStride() const { return m_outerStride; }
const Scalar* data;
protected:
Index m_outerStride;
};
template <typename Derived>
struct evaluator<PlainObjectBase<Derived>> : evaluator_base<Derived> {
using PlainObjectType = PlainObjectBase<Derived>;
using Scalar = typename PlainObjectType::Scalar;
using CoeffReturnType = typename PlainObjectType::CoeffReturnType;
enum {
IsRowMajor = PlainObjectType::IsRowMajor,
IsVectorAtCompileTime = PlainObjectType::IsVectorAtCompileTime,
RowsAtCompileTime = PlainObjectType::RowsAtCompileTime,
ColsAtCompileTime = PlainObjectType::ColsAtCompileTime,
CoeffReadCost = NumTraits<Scalar>::ReadCost,
Flags = traits<Derived>::EvaluatorFlags,
Alignment = traits<Derived>::Alignment
};
enum {
// We do not need to know the outer stride for vectors
OuterStrideAtCompileTime = IsVectorAtCompileTime ? 0
: int(IsRowMajor) ? ColsAtCompileTime
: RowsAtCompileTime
};
EIGEN_DEVICE_FUNC constexpr evaluator() : m_d(0, OuterStrideAtCompileTime) {
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
EIGEN_DEVICE_FUNC constexpr explicit evaluator(const PlainObjectType& m)
: m_d(m.data(), IsVectorAtCompileTime ? 0 : m.outerStride()) {
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE constexpr CoeffReturnType coeff(Index row, Index col) const {
return coeff(getIndex(row, col));
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE constexpr CoeffReturnType coeff(Index index) const { return m_d.data[index]; }
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE constexpr Scalar& coeffRef(Index row, Index col) {
return coeffRef(getIndex(row, col));
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE constexpr Scalar& coeffRef(Index index) {
return const_cast<Scalar*>(m_d.data)[index];
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
return packet<LoadMode, PacketType>(getIndex(row, col));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
return ploadt<PacketType, LoadMode>(m_d.data + index);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index row, Index col, const PacketType& x) {
writePacket<StoreMode, PacketType>(getIndex(row, col), x);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index index, const PacketType& x) {
pstoret<Scalar, PacketType, StoreMode>(const_cast<Scalar*>(m_d.data) + index, x);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
return packetSegment<LoadMode, PacketType>(getIndex(row, col), begin, count);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
return ploadtSegment<PacketType, LoadMode>(m_d.data + index, begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index row, Index col, const PacketType& x, Index begin,
Index count) {
writePacketSegment<StoreMode, PacketType>(getIndex(row, col), x, begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index index, const PacketType& x, Index begin,
Index count) {
pstoretSegment<Scalar, PacketType, StoreMode>(const_cast<Scalar*>(m_d.data) + index, x, begin, count);
}
protected:
plainobjectbase_evaluator_data<Scalar, OuterStrideAtCompileTime> m_d;
private:
EIGEN_DEVICE_FUNC constexpr Index getIndex(Index row, Index col) const {
return IsRowMajor ? row * m_d.outerStride() + col : row + col * m_d.outerStride();
}
};
template <typename Scalar, int Rows, int Cols, int Options, int MaxRows, int MaxCols>
struct evaluator<Matrix<Scalar, Rows, Cols, Options, MaxRows, MaxCols>>
: evaluator<PlainObjectBase<Matrix<Scalar, Rows, Cols, Options, MaxRows, MaxCols>>> {
using XprType = Matrix<Scalar, Rows, Cols, Options, MaxRows, MaxCols>;
EIGEN_DEVICE_FUNC constexpr evaluator() = default;
EIGEN_DEVICE_FUNC constexpr explicit evaluator(const XprType& m) : evaluator<PlainObjectBase<XprType>>(m) {}
};
template <typename Scalar, int Rows, int Cols, int Options, int MaxRows, int MaxCols>
struct evaluator<Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols>>
: evaluator<PlainObjectBase<Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols>>> {
using XprType = Array<Scalar, Rows, Cols, Options, MaxRows, MaxCols>;
EIGEN_DEVICE_FUNC constexpr evaluator() = default;
EIGEN_DEVICE_FUNC constexpr explicit evaluator(const XprType& m) : evaluator<PlainObjectBase<XprType>>(m) {}
};
// -------------------- Transpose --------------------
template <typename ArgType>
struct unary_evaluator<Transpose<ArgType>, IndexBased> : evaluator_base<Transpose<ArgType>> {
using XprType = Transpose<ArgType>;
enum {
CoeffReadCost = evaluator<ArgType>::CoeffReadCost,
Flags = evaluator<ArgType>::Flags ^ RowMajorBit,
Alignment = evaluator<ArgType>::Alignment
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit unary_evaluator(const XprType& t)
: m_argImpl(t.nestedExpression()) {}
using Scalar = typename XprType::Scalar;
using CoeffReturnType = typename XprType::CoeffReturnType;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const {
return m_argImpl.coeff(col, row);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return m_argImpl.coeff(index);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index row, Index col) {
return m_argImpl.coeffRef(col, row);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE typename XprType::Scalar& coeffRef(Index index) {
return m_argImpl.coeffRef(index);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
return m_argImpl.template packet<LoadMode, PacketType>(col, row);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
return m_argImpl.template packet<LoadMode, PacketType>(index);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index row, Index col, const PacketType& x) {
m_argImpl.template writePacket<StoreMode, PacketType>(col, row, x);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index index, const PacketType& x) {
m_argImpl.template writePacket<StoreMode, PacketType>(index, x);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
return m_argImpl.template packetSegment<LoadMode, PacketType>(col, row, begin, count);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
return m_argImpl.template packetSegment<LoadMode, PacketType>(index, begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index row, Index col, const PacketType& x, Index begin,
Index count) {
m_argImpl.template writePacketSegment<StoreMode, PacketType>(col, row, x, begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index index, const PacketType& x, Index begin,
Index count) {
m_argImpl.template writePacketSegment<StoreMode, PacketType>(index, x, begin, count);
}
protected:
evaluator<ArgType> m_argImpl;
};
// -------------------- CwiseNullaryOp --------------------
// Like Matrix and Array, this is not really a unary expression, so we directly specialize evaluator.
// Likewise, there is not need to more sophisticated dispatching here.
template <typename Scalar, typename NullaryOp, bool has_nullary = has_nullary_operator<NullaryOp>::value,
bool has_unary = has_unary_operator<NullaryOp>::value,
bool has_binary = has_binary_operator<NullaryOp>::value>
struct nullary_wrapper {
template <typename IndexType>
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar operator()(const NullaryOp& op, IndexType i,
IndexType j) const {
return op(i, j);
}
template <typename IndexType>
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar operator()(const NullaryOp& op, IndexType i) const {
return op(i);
}
template <typename T, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T packetOp(const NullaryOp& op, IndexType i, IndexType j) const {
return op.template packetOp<T>(i, j);
}
template <typename T, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T packetOp(const NullaryOp& op, IndexType i) const {
return op.template packetOp<T>(i);
}
};
template <typename Scalar, typename NullaryOp>
struct nullary_wrapper<Scalar, NullaryOp, true, false, false> {
template <typename IndexType>
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar operator()(const NullaryOp& op, IndexType = 0,
IndexType = 0) const {
return op();
}
template <typename T, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T packetOp(const NullaryOp& op, IndexType = 0, IndexType = 0) const {
return op.template packetOp<T>();
}
};
template <typename Scalar, typename NullaryOp>
struct nullary_wrapper<Scalar, NullaryOp, false, false, true> {
template <typename IndexType>
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar operator()(const NullaryOp& op, IndexType i,
IndexType j = 0) const {
return op(i, j);
}
template <typename T, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T packetOp(const NullaryOp& op, IndexType i, IndexType j = 0) const {
return op.template packetOp<T>(i, j);
}
};
// We need the following specialization for vector-only functors assigned to a runtime vector,
// for instance, using linspace and assigning a RowVectorXd to a MatrixXd or even a row of a MatrixXd.
// In this case, i==0 and j is used for the actual iteration.
template <typename Scalar, typename NullaryOp>
struct nullary_wrapper<Scalar, NullaryOp, false, true, false> {
template <typename IndexType>
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar operator()(const NullaryOp& op, IndexType i,
IndexType j) const {
eigen_assert(i == 0 || j == 0);
return op(i + j);
}
template <typename T, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T packetOp(const NullaryOp& op, IndexType i, IndexType j) const {
eigen_assert(i == 0 || j == 0);
return op.template packetOp<T>(i + j);
}
template <typename IndexType>
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar operator()(const NullaryOp& op, IndexType i) const {
return op(i);
}
template <typename T, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE T packetOp(const NullaryOp& op, IndexType i) const {
return op.template packetOp<T>(i);
}
};
template <typename Scalar, typename NullaryOp>
struct nullary_wrapper<Scalar, NullaryOp, false, false, false> {};
template <typename NullaryOp, typename PlainObjectType>
struct evaluator<CwiseNullaryOp<NullaryOp, PlainObjectType>>
: evaluator_base<CwiseNullaryOp<NullaryOp, PlainObjectType>> {
using XprType = CwiseNullaryOp<NullaryOp, PlainObjectType>;
using PlainObjectTypeCleaned = remove_all_t<PlainObjectType>;
enum {
CoeffReadCost = functor_traits<NullaryOp>::Cost,
Flags = (evaluator<PlainObjectTypeCleaned>::Flags &
(HereditaryBits | (functor_has_linear_access<NullaryOp>::value ? LinearAccessBit : 0) |
(functor_traits<NullaryOp>::PacketAccess ? PacketAccessBit : 0))) |
(functor_traits<NullaryOp>::IsRepeatable ? 0 : EvalBeforeNestingBit),
Alignment = AlignedMax
};
EIGEN_DEVICE_FUNC constexpr explicit evaluator(const XprType& n) : m_functor(n.functor()), m_wrapper() {
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
using CoeffReturnType = typename XprType::CoeffReturnType;
template <typename IndexType>
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(IndexType row, IndexType col) const {
return m_wrapper(m_functor, row, col);
}
template <typename IndexType>
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(IndexType index) const {
return m_wrapper(m_functor, index);
}
template <int LoadMode, typename PacketType, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(IndexType row, IndexType col) const {
return m_wrapper.template packetOp<PacketType>(m_functor, row, col);
}
template <int LoadMode, typename PacketType, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(IndexType index) const {
return m_wrapper.template packetOp<PacketType>(m_functor, index);
}
template <int LoadMode, typename PacketType, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(IndexType row, IndexType col, Index /*begin*/,
Index /*count*/) const {
return packet<LoadMode, PacketType, IndexType>(row, col);
}
template <int LoadMode, typename PacketType, typename IndexType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(IndexType index, Index /*begin*/,
Index /*count*/) const {
return packet<LoadMode, PacketType, IndexType>(index);
}
protected:
const NullaryOp m_functor;
const nullary_wrapper<CoeffReturnType, NullaryOp> m_wrapper;
};
// -------------------- CwiseUnaryOp --------------------
template <typename UnaryOp, typename ArgType>
struct unary_evaluator<CwiseUnaryOp<UnaryOp, ArgType>, IndexBased> : evaluator_base<CwiseUnaryOp<UnaryOp, ArgType>> {
using XprType = CwiseUnaryOp<UnaryOp, ArgType>;
enum {
CoeffReadCost = int(evaluator<ArgType>::CoeffReadCost) + int(functor_traits<UnaryOp>::Cost),
Flags = evaluator<ArgType>::Flags &
(HereditaryBits | LinearAccessBit | (functor_traits<UnaryOp>::PacketAccess ? PacketAccessBit : 0)),
Alignment = evaluator<ArgType>::Alignment
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit unary_evaluator(const XprType& op) : m_d(op) {
EIGEN_INTERNAL_CHECK_COST_VALUE(functor_traits<UnaryOp>::Cost);
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
using CoeffReturnType = typename XprType::CoeffReturnType;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const {
return m_d.func()(m_d.argImpl.coeff(row, col));
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return m_d.func()(m_d.argImpl.coeff(index));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
return m_d.func().packetOp(m_d.argImpl.template packet<LoadMode, PacketType>(row, col));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
return m_d.func().packetOp(m_d.argImpl.template packet<LoadMode, PacketType>(index));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
return m_d.func().packetOp(m_d.argImpl.template packetSegment<LoadMode, PacketType>(row, col, begin, count));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
return m_d.func().packetOp(m_d.argImpl.template packetSegment<LoadMode, PacketType>(index, begin, count));
}
protected:
// this helper permits to completely eliminate the functor if it is empty
struct Data {
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Data(const XprType& xpr)
: op(xpr.functor()), argImpl(xpr.nestedExpression()) {}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE const UnaryOp& func() const { return op; }
UnaryOp op;
evaluator<ArgType> argImpl;
};
Data m_d;
};
// ----------------------- Casting ---------------------
template <typename SrcType, typename DstType, typename ArgType>
struct unary_evaluator<CwiseUnaryOp<core_cast_op<SrcType, DstType>, ArgType>, IndexBased> {
using CastOp = core_cast_op<SrcType, DstType>;
using XprType = CwiseUnaryOp<CastOp, ArgType>;
// Use the largest packet type by default
using SrcPacketType = typename packet_traits<SrcType>::type;
static constexpr int SrcPacketSize = unpacket_traits<SrcPacketType>::size;
static constexpr int SrcPacketBytes = SrcPacketSize * sizeof(SrcType);
enum {
CoeffReadCost = int(evaluator<ArgType>::CoeffReadCost) + int(functor_traits<CastOp>::Cost),
PacketAccess = functor_traits<CastOp>::PacketAccess,
ActualPacketAccessBit = PacketAccess ? PacketAccessBit : 0,
Flags = evaluator<ArgType>::Flags & (HereditaryBits | LinearAccessBit | ActualPacketAccessBit),
IsRowMajor = (evaluator<ArgType>::Flags & RowMajorBit),
Alignment = evaluator<ArgType>::Alignment
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit unary_evaluator(const XprType& xpr)
: m_argImpl(xpr.nestedExpression()), m_rows(xpr.rows()), m_cols(xpr.cols()) {
EIGEN_INTERNAL_CHECK_COST_VALUE(functor_traits<CastOp>::Cost);
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
template <typename DstPacketType>
using AltSrcScalarOp = std::enable_if_t<(unpacket_traits<DstPacketType>::size < SrcPacketSize &&
!find_packet_by_size<SrcType, unpacket_traits<DstPacketType>::size>::value),
bool>;
template <typename DstPacketType>
using SrcPacketArgs1 =
std::enable_if_t<(find_packet_by_size<SrcType, unpacket_traits<DstPacketType>::size>::value), bool>;
template <typename DstPacketType>
using SrcPacketArgs2 = std::enable_if_t<(unpacket_traits<DstPacketType>::size) == (2 * SrcPacketSize), bool>;
template <typename DstPacketType>
using SrcPacketArgs4 = std::enable_if_t<(unpacket_traits<DstPacketType>::size) == (4 * SrcPacketSize), bool>;
template <typename DstPacketType>
using SrcPacketArgs8 = std::enable_if_t<(unpacket_traits<DstPacketType>::size) == (8 * SrcPacketSize), bool>;
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool check_array_bounds(Index row, Index col, Index begin, Index count) const {
return IsRowMajor ? (col + count + begin <= cols()) : (row + count + begin <= rows());
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE bool check_array_bounds(Index index, Index begin, Index count) const {
return index + count + begin <= size();
}
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE SrcType srcCoeff(Index row, Index col, Index offset) const {
Index actualRow = IsRowMajor ? row : row + offset;
Index actualCol = IsRowMajor ? col + offset : col;
return m_argImpl.coeff(actualRow, actualCol);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE SrcType srcCoeff(Index index, Index offset) const {
Index actualIndex = index + offset;
return m_argImpl.coeff(actualIndex);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE DstType coeff(Index row, Index col) const {
return cast<SrcType, DstType>(srcCoeff(row, col, 0));
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE DstType coeff(Index index) const {
return cast<SrcType, DstType>(srcCoeff(index, 0));
}
template <int LoadMode, typename PacketType = SrcPacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType srcPacket(Index row, Index col, Index offset) const {
constexpr int PacketSize = unpacket_traits<PacketType>::size;
Index packetOffset = offset * PacketSize;
Index actualRow = IsRowMajor ? row : row + packetOffset;
Index actualCol = IsRowMajor ? col + packetOffset : col;
eigen_assert(check_array_bounds(actualRow, actualCol, 0, PacketSize) && "Array index out of bounds");
return m_argImpl.template packet<LoadMode, PacketType>(actualRow, actualCol);
}
template <int LoadMode, typename PacketType = SrcPacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType srcPacket(Index index, Index offset) const {
constexpr int PacketSize = unpacket_traits<PacketType>::size;
Index packetOffset = offset * PacketSize;
Index actualIndex = index + packetOffset;
eigen_assert(check_array_bounds(actualIndex, 0, PacketSize) && "Array index out of bounds");
return m_argImpl.template packet<LoadMode, PacketType>(actualIndex);
}
template <int LoadMode, typename PacketType = SrcPacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType srcPacketSegment(Index row, Index col, Index begin, Index count,
Index offset) const {
constexpr int PacketSize = unpacket_traits<PacketType>::size;
Index packetOffset = offset * PacketSize;
Index actualRow = IsRowMajor ? row : row + packetOffset;
Index actualCol = IsRowMajor ? col + packetOffset : col;
eigen_assert(check_array_bounds(actualRow, actualCol, begin, count) && "Array index out of bounds");
return m_argImpl.template packetSegment<LoadMode, PacketType>(actualRow, actualCol, begin, count);
}
template <int LoadMode, typename PacketType = SrcPacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType srcPacketSegment(Index index, Index begin, Index count,
Index offset) const {
constexpr int PacketSize = unpacket_traits<PacketType>::size;
Index packetOffset = offset * PacketSize;
Index actualIndex = index + packetOffset;
eigen_assert(check_array_bounds(actualIndex, begin, count) && "Array index out of bounds");
return m_argImpl.template packetSegment<LoadMode, PacketType>(actualIndex, begin, count);
}
template <int NumPackets, int LoadMode, typename PacketType = SrcPacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketBlock<PacketType, NumPackets> srcPacketSegmentHelper(Index row, Index col,
Index begin,
Index count) const {
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
PacketBlock<PacketType, NumPackets> packets;
for (Index i = 0; i < NumPackets; i++) packets.packet[i] = pzero(PacketType());
Index offset = begin / SrcPacketSize;
Index actualBegin = begin % SrcPacketSize;
for (; offset < NumPackets; offset++) {
Index actualCount = numext::mini(SrcPacketSize - actualBegin, count);
packets.packet[offset] = srcPacketSegment<SrcLoadMode>(row, col, actualBegin, actualCount, offset);
if (count == actualCount) break;
actualBegin = 0;
count -= actualCount;
}
return packets;
}
template <int NumPackets, int LoadMode, typename PacketType = SrcPacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketBlock<PacketType, NumPackets> srcPacketSegmentHelper(Index index,
Index begin,
Index count) const {
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
PacketBlock<PacketType, NumPackets> packets;
for (Index i = 0; i < NumPackets; i++) packets.packet[i] = pzero(PacketType());
Index offset = begin / SrcPacketSize;
Index actualBegin = begin % SrcPacketSize;
for (; offset < NumPackets; offset++) {
Index actualCount = numext::mini(SrcPacketSize - actualBegin, count);
packets.packet[offset] = srcPacketSegment<SrcLoadMode>(index, actualBegin, actualCount, offset);
if (count == actualCount) break;
actualBegin = 0;
count -= actualCount;
}
return packets;
}
// There is no source packet type with equal or fewer elements than DstPacketType.
// This is problematic as the evaluation loop may attempt to access data outside the bounds of the array.
// For example, consider the cast utilizing pcast<Packet4f,Packet2d> with an array of size 4: {0.0f,1.0f,2.0f,3.0f}.
// The first iteration of the evaluation loop will load 16 bytes: {0.0f,1.0f,2.0f,3.0f} and cast to {0.0,1.0}, which
// is acceptable. The second iteration will load 16 bytes: {2.0f,3.0f,?,?}, which is outside the bounds of the array.
template <int LoadMode, typename DstPacketType, AltSrcScalarOp<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index row, Index col) const {
constexpr int DstPacketSize = unpacket_traits<DstPacketType>::size;
constexpr int SrcBytesIncrement = DstPacketSize * sizeof(SrcType);
constexpr int SrcLoadMode = plain_enum_min(SrcBytesIncrement, LoadMode);
return pcast<SrcPacketType, DstPacketType>(srcPacketSegment<SrcLoadMode>(row, col, 0, DstPacketSize, 0));
}
// Use the source packet type with the same size as DstPacketType, if it exists
template <int LoadMode, typename DstPacketType, SrcPacketArgs1<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index row, Index col) const {
constexpr int DstPacketSize = unpacket_traits<DstPacketType>::size;
using SizedSrcPacketType = typename find_packet_by_size<SrcType, DstPacketSize>::type;
constexpr int SrcBytesIncrement = DstPacketSize * sizeof(SrcType);
constexpr int SrcLoadMode = plain_enum_min(SrcBytesIncrement, LoadMode);
return pcast<SizedSrcPacketType, DstPacketType>(srcPacket<SrcLoadMode, SizedSrcPacketType>(row, col, 0));
}
// unpacket_traits<DstPacketType>::size == 2 * SrcPacketSize
template <int LoadMode, typename DstPacketType, SrcPacketArgs2<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index row, Index col) const {
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
return pcast<SrcPacketType, DstPacketType>(srcPacket<SrcLoadMode>(row, col, 0),
srcPacket<SrcLoadMode>(row, col, 1));
}
// unpacket_traits<DstPacketType>::size == 4 * SrcPacketSize
template <int LoadMode, typename DstPacketType, SrcPacketArgs4<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index row, Index col) const {
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
return pcast<SrcPacketType, DstPacketType>(srcPacket<SrcLoadMode>(row, col, 0), srcPacket<SrcLoadMode>(row, col, 1),
srcPacket<SrcLoadMode>(row, col, 2),
srcPacket<SrcLoadMode>(row, col, 3));
}
// unpacket_traits<DstPacketType>::size == 8 * SrcPacketSize
template <int LoadMode, typename DstPacketType, SrcPacketArgs8<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index row, Index col) const {
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
return pcast<SrcPacketType, DstPacketType>(
srcPacket<SrcLoadMode>(row, col, 0), srcPacket<SrcLoadMode>(row, col, 1), srcPacket<SrcLoadMode>(row, col, 2),
srcPacket<SrcLoadMode>(row, col, 3), srcPacket<SrcLoadMode>(row, col, 4), srcPacket<SrcLoadMode>(row, col, 5),
srcPacket<SrcLoadMode>(row, col, 6), srcPacket<SrcLoadMode>(row, col, 7));
}
// packetSegment variants
template <int LoadMode, typename DstPacketType, AltSrcScalarOp<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index row, Index col, Index begin,
Index count) const {
constexpr int DstPacketSize = unpacket_traits<DstPacketType>::size;
constexpr int SrcBytesIncrement = DstPacketSize * sizeof(SrcType);
constexpr int SrcLoadMode = plain_enum_min(SrcBytesIncrement, LoadMode);
return pcast<SrcPacketType, DstPacketType>(srcPacketSegment<SrcLoadMode>(row, col, begin, count, 0));
}
// Use the source packet type with the same size as DstPacketType, if it exists
template <int LoadMode, typename DstPacketType, SrcPacketArgs1<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index row, Index col, Index begin,
Index count) const {
constexpr int DstPacketSize = unpacket_traits<DstPacketType>::size;
using SizedSrcPacketType = typename find_packet_by_size<SrcType, DstPacketSize>::type;
constexpr int SrcBytesIncrement = DstPacketSize * sizeof(SrcType);
constexpr int SrcLoadMode = plain_enum_min(SrcBytesIncrement, LoadMode);
return pcast<SizedSrcPacketType, DstPacketType>(
srcPacketSegment<SrcLoadMode, SizedSrcPacketType>(row, col, begin, count, 0));
}
// unpacket_traits<DstPacketType>::size == 2 * SrcPacketSize
template <int LoadMode, typename DstPacketType, SrcPacketArgs2<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index row, Index col, Index begin,
Index count) const {
constexpr int NumPackets = 2;
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
PacketBlock<SrcPacketType, NumPackets> packets =
srcPacketSegmentHelper<NumPackets, SrcLoadMode>(row, col, begin, count);
return pcast<SrcPacketType, DstPacketType>(packets.packet[0], packets.packet[1]);
}
// unpacket_traits<DstPacketType>::size == 4 * SrcPacketSize
template <int LoadMode, typename DstPacketType, SrcPacketArgs4<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index row, Index col, Index begin,
Index count) const {
constexpr int NumPackets = 4;
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
PacketBlock<SrcPacketType, NumPackets> packets =
srcPacketSegmentHelper<NumPackets, SrcLoadMode>(row, col, begin, count);
return pcast<SrcPacketType, DstPacketType>(packets.packet[0], packets.packet[1], packets.packet[2],
packets.packet[3]);
}
// unpacket_traits<DstPacketType>::size == 8 * SrcPacketSize
template <int LoadMode, typename DstPacketType, SrcPacketArgs8<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index row, Index col, Index begin,
Index count) const {
constexpr int NumPackets = 8;
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
PacketBlock<SrcPacketType, NumPackets> packets =
srcPacketSegmentHelper<NumPackets, SrcLoadMode>(row, col, begin, count);
return pcast<SrcPacketType, DstPacketType>(packets.packet[0], packets.packet[1], packets.packet[2],
packets.packet[3], packets.packet[4], packets.packet[5],
packets.packet[6], packets.packet[7]);
}
// Analogous routines for linear access.
template <int LoadMode, typename DstPacketType, AltSrcScalarOp<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index index) const {
constexpr int DstPacketSize = unpacket_traits<DstPacketType>::size;
constexpr int SrcBytesIncrement = DstPacketSize * sizeof(SrcType);
constexpr int SrcLoadMode = plain_enum_min(SrcBytesIncrement, LoadMode);
return pcast<SrcPacketType, DstPacketType>(srcPacketSegment<SrcLoadMode>(index, 0, DstPacketSize, 0));
}
template <int LoadMode, typename DstPacketType, SrcPacketArgs1<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index index) const {
constexpr int DstPacketSize = unpacket_traits<DstPacketType>::size;
using SizedSrcPacketType = typename find_packet_by_size<SrcType, DstPacketSize>::type;
constexpr int SrcBytesIncrement = DstPacketSize * sizeof(SrcType);
constexpr int SrcLoadMode = plain_enum_min(SrcBytesIncrement, LoadMode);
return pcast<SizedSrcPacketType, DstPacketType>(srcPacket<SrcLoadMode, SizedSrcPacketType>(index, 0));
}
template <int LoadMode, typename DstPacketType, SrcPacketArgs2<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index index) const {
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
return pcast<SrcPacketType, DstPacketType>(srcPacket<SrcLoadMode>(index, 0), srcPacket<SrcLoadMode>(index, 1));
}
template <int LoadMode, typename DstPacketType, SrcPacketArgs4<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index index) const {
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
return pcast<SrcPacketType, DstPacketType>(srcPacket<SrcLoadMode>(index, 0), srcPacket<SrcLoadMode>(index, 1),
srcPacket<SrcLoadMode>(index, 2), srcPacket<SrcLoadMode>(index, 3));
}
template <int LoadMode, typename DstPacketType, SrcPacketArgs8<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packet(Index index) const {
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
return pcast<SrcPacketType, DstPacketType>(srcPacket<SrcLoadMode>(index, 0), srcPacket<SrcLoadMode>(index, 1),
srcPacket<SrcLoadMode>(index, 2), srcPacket<SrcLoadMode>(index, 3),
srcPacket<SrcLoadMode>(index, 4), srcPacket<SrcLoadMode>(index, 5),
srcPacket<SrcLoadMode>(index, 6), srcPacket<SrcLoadMode>(index, 7));
}
// packetSegment variants
template <int LoadMode, typename DstPacketType, AltSrcScalarOp<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index index, Index begin, Index count) const {
constexpr int DstPacketSize = unpacket_traits<DstPacketType>::size;
constexpr int SrcBytesIncrement = DstPacketSize * sizeof(SrcType);
constexpr int SrcLoadMode = plain_enum_min(SrcBytesIncrement, LoadMode);
return pcast<SrcPacketType, DstPacketType>(srcPacketSegment<SrcLoadMode>(index, begin, count, 0));
}
// Use the source packet type with the same size as DstPacketType, if it exists
template <int LoadMode, typename DstPacketType, SrcPacketArgs1<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index index, Index begin, Index count) const {
constexpr int DstPacketSize = unpacket_traits<DstPacketType>::size;
using SizedSrcPacketType = typename find_packet_by_size<SrcType, DstPacketSize>::type;
constexpr int SrcBytesIncrement = DstPacketSize * sizeof(SrcType);
constexpr int SrcLoadMode = plain_enum_min(SrcBytesIncrement, LoadMode);
return pcast<SizedSrcPacketType, DstPacketType>(
srcPacketSegment<SrcLoadMode, SizedSrcPacketType>(index, begin, count, 0));
}
// unpacket_traits<DstPacketType>::size == 2 * SrcPacketSize
template <int LoadMode, typename DstPacketType, SrcPacketArgs2<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index index, Index begin, Index count) const {
constexpr int NumPackets = 2;
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
PacketBlock<SrcPacketType, NumPackets> packets =
srcPacketSegmentHelper<NumPackets, SrcLoadMode>(index, begin, count);
return pcast<SrcPacketType, DstPacketType>(packets.packet[0], packets.packet[1]);
}
// unpacket_traits<DstPacketType>::size == 4 * SrcPacketSize
template <int LoadMode, typename DstPacketType, SrcPacketArgs4<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index index, Index begin, Index count) const {
constexpr int NumPackets = 4;
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
PacketBlock<SrcPacketType, NumPackets> packets =
srcPacketSegmentHelper<NumPackets, SrcLoadMode>(index, begin, count);
return pcast<SrcPacketType, DstPacketType>(packets.packet[0], packets.packet[1], packets.packet[2],
packets.packet[3]);
}
// unpacket_traits<DstPacketType>::size == 8 * SrcPacketSize
template <int LoadMode, typename DstPacketType, SrcPacketArgs8<DstPacketType> = true>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE DstPacketType packetSegment(Index index, Index begin, Index count) const {
constexpr int NumPackets = 8;
constexpr int SrcLoadMode = plain_enum_min(SrcPacketBytes, LoadMode);
PacketBlock<SrcPacketType, NumPackets> packets =
srcPacketSegmentHelper<NumPackets, SrcLoadMode>(index, begin, count);
return pcast<SrcPacketType, DstPacketType>(packets.packet[0], packets.packet[1], packets.packet[2],
packets.packet[3], packets.packet[4], packets.packet[5],
packets.packet[6], packets.packet[7]);
}
constexpr EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Index rows() const { return m_rows; }
constexpr EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Index cols() const { return m_cols; }
constexpr EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Index size() const { return m_rows * m_cols; }
protected:
const evaluator<ArgType> m_argImpl;
const variable_if_dynamic<Index, XprType::RowsAtCompileTime> m_rows;
const variable_if_dynamic<Index, XprType::ColsAtCompileTime> m_cols;
};
// -------------------- CwiseTernaryOp --------------------
// this is a ternary expression
template <typename TernaryOp, typename Arg1, typename Arg2, typename Arg3>
struct evaluator<CwiseTernaryOp<TernaryOp, Arg1, Arg2, Arg3>>
: public ternary_evaluator<CwiseTernaryOp<TernaryOp, Arg1, Arg2, Arg3>> {
using XprType = CwiseTernaryOp<TernaryOp, Arg1, Arg2, Arg3>;
using Base = ternary_evaluator<CwiseTernaryOp<TernaryOp, Arg1, Arg2, Arg3>>;
EIGEN_DEVICE_FUNC constexpr explicit evaluator(const XprType& xpr) : Base(xpr) {}
};
template <typename TernaryOp, typename Arg1, typename Arg2, typename Arg3>
struct ternary_evaluator<CwiseTernaryOp<TernaryOp, Arg1, Arg2, Arg3>, IndexBased, IndexBased>
: evaluator_base<CwiseTernaryOp<TernaryOp, Arg1, Arg2, Arg3>> {
using XprType = CwiseTernaryOp<TernaryOp, Arg1, Arg2, Arg3>;
enum {
CoeffReadCost = int(evaluator<Arg1>::CoeffReadCost) + int(evaluator<Arg2>::CoeffReadCost) +
int(evaluator<Arg3>::CoeffReadCost) + int(functor_traits<TernaryOp>::Cost),
Arg1Flags = evaluator<Arg1>::Flags,
Arg2Flags = evaluator<Arg2>::Flags,
Arg3Flags = evaluator<Arg3>::Flags,
SameType = std::is_same<typename Arg1::Scalar, typename Arg2::Scalar>::value &&
std::is_same<typename Arg1::Scalar, typename Arg3::Scalar>::value,
StorageOrdersAgree = (int(Arg1Flags) & RowMajorBit) == (int(Arg2Flags) & RowMajorBit) &&
(int(Arg1Flags) & RowMajorBit) == (int(Arg3Flags) & RowMajorBit),
Flags0 = (int(Arg1Flags) | int(Arg2Flags) | int(Arg3Flags)) &
(HereditaryBits |
(int(Arg1Flags) & int(Arg2Flags) & int(Arg3Flags) &
((StorageOrdersAgree ? LinearAccessBit : 0) |
(functor_traits<TernaryOp>::PacketAccess && StorageOrdersAgree && SameType ? PacketAccessBit : 0)))),
Flags = (Flags0 & ~RowMajorBit) | (Arg1Flags & RowMajorBit),
Alignment = plain_enum_min(plain_enum_min(evaluator<Arg1>::Alignment, evaluator<Arg2>::Alignment),
evaluator<Arg3>::Alignment)
};
EIGEN_DEVICE_FUNC constexpr explicit ternary_evaluator(const XprType& xpr) : m_d(xpr) {
EIGEN_INTERNAL_CHECK_COST_VALUE(functor_traits<TernaryOp>::Cost);
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
using CoeffReturnType = typename XprType::CoeffReturnType;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const {
return m_d.func()(m_d.arg1Impl.coeff(row, col), m_d.arg2Impl.coeff(row, col), m_d.arg3Impl.coeff(row, col));
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return m_d.func()(m_d.arg1Impl.coeff(index), m_d.arg2Impl.coeff(index), m_d.arg3Impl.coeff(index));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
return m_d.func().packetOp(m_d.arg1Impl.template packet<LoadMode, PacketType>(row, col),
m_d.arg2Impl.template packet<LoadMode, PacketType>(row, col),
m_d.arg3Impl.template packet<LoadMode, PacketType>(row, col));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
return m_d.func().packetOp(m_d.arg1Impl.template packet<LoadMode, PacketType>(index),
m_d.arg2Impl.template packet<LoadMode, PacketType>(index),
m_d.arg3Impl.template packet<LoadMode, PacketType>(index));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
return m_d.func().packetOp(m_d.arg1Impl.template packetSegment<LoadMode, PacketType>(row, col, begin, count),
m_d.arg2Impl.template packetSegment<LoadMode, PacketType>(row, col, begin, count),
m_d.arg3Impl.template packetSegment<LoadMode, PacketType>(row, col, begin, count));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
return m_d.func().packetOp(m_d.arg1Impl.template packetSegment<LoadMode, PacketType>(index, begin, count),
m_d.arg2Impl.template packetSegment<LoadMode, PacketType>(index, begin, count),
m_d.arg3Impl.template packetSegment<LoadMode, PacketType>(index, begin, count));
}
protected:
// this helper permits to completely eliminate the functor if it is empty
struct Data {
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Data(const XprType& xpr)
: op(xpr.functor()), arg1Impl(xpr.arg1()), arg2Impl(xpr.arg2()), arg3Impl(xpr.arg3()) {}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE const TernaryOp& func() const { return op; }
TernaryOp op;
evaluator<Arg1> arg1Impl;
evaluator<Arg2> arg2Impl;
evaluator<Arg3> arg3Impl;
};
Data m_d;
};
template <typename Arg1, typename Arg2, typename Scalar, typename CmpLhsType, typename CmpRhsType, ComparisonName cmp>
struct scalar_boolean_select_spec {
using DummyTernaryOp = scalar_boolean_select_op<Scalar, Scalar, bool>;
using DummyArg3 = CwiseBinaryOp<scalar_cmp_op<Scalar, Scalar, cmp, false>, CmpLhsType, CmpRhsType>;
using DummyXprType = CwiseTernaryOp<DummyTernaryOp, Arg1, Arg2, DummyArg3>;
// only use the typed comparison if it is vectorized
static constexpr bool UseTyped = functor_traits<scalar_cmp_op<Scalar, Scalar, cmp, true>>::PacketAccess;
using CondScalar = std::conditional_t<UseTyped, Scalar, bool>;
using TernaryOp = scalar_boolean_select_op<Scalar, Scalar, CondScalar>;
using Arg3 = CwiseBinaryOp<scalar_cmp_op<Scalar, Scalar, cmp, UseTyped>, CmpLhsType, CmpRhsType>;
using XprType = CwiseTernaryOp<TernaryOp, Arg1, Arg2, Arg3>;
using Base = ternary_evaluator<XprType>;
};
// specialization for expressions like (a < b).select(c, d) to enable full vectorization
template <typename Arg1, typename Arg2, typename Scalar, typename CmpLhsType, typename CmpRhsType, ComparisonName cmp>
struct evaluator<CwiseTernaryOp<scalar_boolean_select_op<Scalar, Scalar, bool>, Arg1, Arg2,
CwiseBinaryOp<scalar_cmp_op<Scalar, Scalar, cmp, false>, CmpLhsType, CmpRhsType>>>
: public scalar_boolean_select_spec<Arg1, Arg2, Scalar, CmpLhsType, CmpRhsType, cmp>::Base {
using Helper = scalar_boolean_select_spec<Arg1, Arg2, Scalar, CmpLhsType, CmpRhsType, cmp>;
using Base = typename Helper::Base;
using DummyXprType = typename Helper::DummyXprType;
using Arg3 = typename Helper::Arg3;
using XprType = typename Helper::XprType;
EIGEN_DEVICE_FUNC constexpr explicit evaluator(const DummyXprType& xpr)
: Base(XprType(xpr.arg1(), xpr.arg2(), Arg3(xpr.arg3().lhs(), xpr.arg3().rhs()))) {}
};
// -------------------- CwiseBinaryOp --------------------
// this is a binary expression
template <typename BinaryOp, typename Lhs, typename Rhs>
struct evaluator<CwiseBinaryOp<BinaryOp, Lhs, Rhs>> : public binary_evaluator<CwiseBinaryOp<BinaryOp, Lhs, Rhs>> {
using XprType = CwiseBinaryOp<BinaryOp, Lhs, Rhs>;
using Base = binary_evaluator<CwiseBinaryOp<BinaryOp, Lhs, Rhs>>;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit evaluator(const XprType& xpr) : Base(xpr) {}
};
template <typename BinaryOp, typename Lhs, typename Rhs>
struct binary_evaluator<CwiseBinaryOp<BinaryOp, Lhs, Rhs>, IndexBased, IndexBased>
: evaluator_base<CwiseBinaryOp<BinaryOp, Lhs, Rhs>> {
using XprType = CwiseBinaryOp<BinaryOp, Lhs, Rhs>;
enum {
CoeffReadCost =
int(evaluator<Lhs>::CoeffReadCost) + int(evaluator<Rhs>::CoeffReadCost) + int(functor_traits<BinaryOp>::Cost),
LhsFlags = evaluator<Lhs>::Flags,
RhsFlags = evaluator<Rhs>::Flags,
SameType = std::is_same<typename Lhs::Scalar, typename Rhs::Scalar>::value,
StorageOrdersAgree = (int(LhsFlags) & RowMajorBit) == (int(RhsFlags) & RowMajorBit),
Flags0 = (int(LhsFlags) | int(RhsFlags)) &
(HereditaryBits |
(int(LhsFlags) & int(RhsFlags) &
((StorageOrdersAgree ? LinearAccessBit : 0) |
(functor_traits<BinaryOp>::PacketAccess && StorageOrdersAgree && SameType ? PacketAccessBit : 0)))),
Flags = (Flags0 & ~RowMajorBit) | (LhsFlags & RowMajorBit),
Alignment = plain_enum_min(evaluator<Lhs>::Alignment, evaluator<Rhs>::Alignment)
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit binary_evaluator(const XprType& xpr) : m_d(xpr) {
EIGEN_INTERNAL_CHECK_COST_VALUE(functor_traits<BinaryOp>::Cost);
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
using CoeffReturnType = typename XprType::CoeffReturnType;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const {
return m_d.func()(m_d.lhsImpl.coeff(row, col), m_d.rhsImpl.coeff(row, col));
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return m_d.func()(m_d.lhsImpl.coeff(index), m_d.rhsImpl.coeff(index));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
return m_d.func().packetOp(m_d.lhsImpl.template packet<LoadMode, PacketType>(row, col),
m_d.rhsImpl.template packet<LoadMode, PacketType>(row, col));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
return m_d.func().packetOp(m_d.lhsImpl.template packet<LoadMode, PacketType>(index),
m_d.rhsImpl.template packet<LoadMode, PacketType>(index));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
return m_d.func().packetOp(m_d.lhsImpl.template packetSegment<LoadMode, PacketType>(row, col, begin, count),
m_d.rhsImpl.template packetSegment<LoadMode, PacketType>(row, col, begin, count));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
return m_d.func().packetOp(m_d.lhsImpl.template packetSegment<LoadMode, PacketType>(index, begin, count),
m_d.rhsImpl.template packetSegment<LoadMode, PacketType>(index, begin, count));
}
protected:
// this helper permits to completely eliminate the functor if it is empty
struct Data {
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Data(const XprType& xpr)
: op(xpr.functor()), lhsImpl(xpr.lhs()), rhsImpl(xpr.rhs()) {}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE const BinaryOp& func() const { return op; }
BinaryOp op;
evaluator<Lhs> lhsImpl;
evaluator<Rhs> rhsImpl;
};
Data m_d;
};
// -------------------- CwiseUnaryView --------------------
template <typename UnaryOp, typename ArgType, typename StrideType>
struct unary_evaluator<CwiseUnaryView<UnaryOp, ArgType, StrideType>, IndexBased>
: evaluator_base<CwiseUnaryView<UnaryOp, ArgType, StrideType>> {
using XprType = CwiseUnaryView<UnaryOp, ArgType, StrideType>;
enum {
CoeffReadCost = int(evaluator<ArgType>::CoeffReadCost) + int(functor_traits<UnaryOp>::Cost),
Flags = (evaluator<ArgType>::Flags & (HereditaryBits | LinearAccessBit | DirectAccessBit)),
Alignment = 0 // FIXME: clarify why alignment is lost for CwiseUnaryView.
};
EIGEN_DEVICE_FUNC constexpr explicit unary_evaluator(const XprType& op) : m_d(op) {
EIGEN_INTERNAL_CHECK_COST_VALUE(functor_traits<UnaryOp>::Cost);
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
using Scalar = typename XprType::Scalar;
using CoeffReturnType = typename XprType::CoeffReturnType;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const {
return m_d.func()(m_d.argImpl.coeff(row, col));
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return m_d.func()(m_d.argImpl.coeff(index));
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index row, Index col) {
return m_d.func()(m_d.argImpl.coeffRef(row, col));
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index index) {
return m_d.func()(m_d.argImpl.coeffRef(index));
}
protected:
// this helper permits to completely eliminate the functor if it is empty
struct Data {
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Data(const XprType& xpr)
: op(xpr.functor()), argImpl(xpr.nestedExpression()) {}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE const UnaryOp& func() const { return op; }
UnaryOp op;
evaluator<ArgType> argImpl;
};
Data m_d;
};
// -------------------- Map --------------------
// FIXME: consider using Derived::PlainObject for PlainObjectType.
// but that might complicate template specialization
template <typename Derived, typename PlainObjectType>
struct mapbase_evaluator;
template <typename Derived, typename PlainObjectType>
struct mapbase_evaluator : evaluator_base<Derived> {
using XprType = Derived;
using PointerType = typename XprType::PointerType;
using Scalar = typename XprType::Scalar;
using CoeffReturnType = typename XprType::CoeffReturnType;
enum {
IsRowMajor = XprType::IsRowMajor,
ColsAtCompileTime = XprType::ColsAtCompileTime,
CoeffReadCost = NumTraits<Scalar>::ReadCost
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit mapbase_evaluator(const XprType& map)
: m_data(const_cast<PointerType>(map.data())),
m_innerStride(map.innerStride()),
m_outerStride(map.outerStride()) {
EIGEN_STATIC_ASSERT(check_implication((evaluator<Derived>::Flags & PacketAccessBit) != 0,
inner_stride_at_compile_time<Derived>::value == 1),
PACKET_ACCESS_REQUIRES_TO_HAVE_INNER_STRIDE_FIXED_TO_1);
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const {
return m_data[col * colStride() + row * rowStride()];
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return m_data[index * m_innerStride.value()];
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index row, Index col) {
return m_data[col * colStride() + row * rowStride()];
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index index) {
return m_data[index * m_innerStride.value()];
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
PointerType ptr = m_data + row * rowStride() + col * colStride();
return ploadt<PacketType, LoadMode>(ptr);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
return ploadt<PacketType, LoadMode>(m_data + index * m_innerStride.value());
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index row, Index col, const PacketType& x) {
PointerType ptr = m_data + row * rowStride() + col * colStride();
pstoret<Scalar, PacketType, StoreMode>(ptr, x);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index index, const PacketType& x) {
pstoret<Scalar, PacketType, StoreMode>(m_data + index * m_innerStride.value(), x);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
PointerType ptr = m_data + row * rowStride() + col * colStride();
return ploadtSegment<PacketType, LoadMode>(ptr, begin, count);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
return ploadtSegment<PacketType, LoadMode>(m_data + index * m_innerStride.value(), begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index row, Index col, const PacketType& x, Index begin,
Index count) {
PointerType ptr = m_data + row * rowStride() + col * colStride();
pstoretSegment<Scalar, PacketType, StoreMode>(ptr, x, begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index index, const PacketType& x, Index begin,
Index count) {
pstoretSegment<Scalar, PacketType, StoreMode>(m_data + index * m_innerStride.value(), x, begin, count);
}
protected:
EIGEN_DEVICE_FUNC constexpr Index rowStride() const noexcept {
return XprType::IsRowMajor ? m_outerStride.value() : m_innerStride.value();
}
EIGEN_DEVICE_FUNC constexpr Index colStride() const noexcept {
return XprType::IsRowMajor ? m_innerStride.value() : m_outerStride.value();
}
PointerType m_data;
const variable_if_dynamic<Index, XprType::InnerStrideAtCompileTime> m_innerStride;
const variable_if_dynamic<Index, XprType::OuterStrideAtCompileTime> m_outerStride;
};
template <typename PlainObjectType, int MapOptions, typename StrideType>
struct evaluator<Map<PlainObjectType, MapOptions, StrideType>>
: public mapbase_evaluator<Map<PlainObjectType, MapOptions, StrideType>, PlainObjectType> {
using XprType = Map<PlainObjectType, MapOptions, StrideType>;
using Scalar = typename XprType::Scalar;
// TODO: should check for smaller packet types once we can handle multi-sized packet types
using PacketScalar = typename packet_traits<Scalar>::type;
enum {
InnerStrideAtCompileTime = StrideType::InnerStrideAtCompileTime == 0
? int(PlainObjectType::InnerStrideAtCompileTime)
: int(StrideType::InnerStrideAtCompileTime),
OuterStrideAtCompileTime = StrideType::OuterStrideAtCompileTime == 0
? int(PlainObjectType::OuterStrideAtCompileTime)
: int(StrideType::OuterStrideAtCompileTime),
HasNoInnerStride = InnerStrideAtCompileTime == 1,
HasNoOuterStride = StrideType::OuterStrideAtCompileTime == 0,
HasNoStride = HasNoInnerStride && HasNoOuterStride,
IsDynamicSize = PlainObjectType::SizeAtCompileTime == Dynamic,
PacketAccessMask = bool(HasNoInnerStride) ? ~int(0) : ~int(PacketAccessBit),
LinearAccessMask =
bool(HasNoStride) || bool(PlainObjectType::IsVectorAtCompileTime) ? ~int(0) : ~int(LinearAccessBit),
Flags = int(evaluator<PlainObjectType>::Flags) & (LinearAccessMask & PacketAccessMask),
Alignment = int(MapOptions) & int(AlignedMask)
};
EIGEN_DEVICE_FUNC constexpr explicit evaluator(const XprType& map)
: mapbase_evaluator<XprType, PlainObjectType>(map) {}
};
// -------------------- Ref --------------------
template <typename PlainObjectType, int RefOptions, typename StrideType>
struct evaluator<Ref<PlainObjectType, RefOptions, StrideType>>
: public mapbase_evaluator<Ref<PlainObjectType, RefOptions, StrideType>, PlainObjectType> {
using XprType = Ref<PlainObjectType, RefOptions, StrideType>;
enum {
Flags = evaluator<Map<PlainObjectType, RefOptions, StrideType>>::Flags,
Alignment = evaluator<Map<PlainObjectType, RefOptions, StrideType>>::Alignment
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit evaluator(const XprType& ref)
: mapbase_evaluator<XprType, PlainObjectType>(ref) {}
};
// -------------------- Block --------------------
template <typename ArgType, int BlockRows, int BlockCols, bool InnerPanel,
bool HasDirectAccess = has_direct_access<ArgType>::value>
struct block_evaluator;
template <typename ArgType, int BlockRows, int BlockCols, bool InnerPanel>
struct evaluator<Block<ArgType, BlockRows, BlockCols, InnerPanel>>
: block_evaluator<ArgType, BlockRows, BlockCols, InnerPanel> {
using XprType = Block<ArgType, BlockRows, BlockCols, InnerPanel>;
using Scalar = typename XprType::Scalar;
// TODO: should check for smaller packet types once we can handle multi-sized packet types
using PacketScalar = typename packet_traits<Scalar>::type;
enum {
CoeffReadCost = evaluator<ArgType>::CoeffReadCost,
RowsAtCompileTime = traits<XprType>::RowsAtCompileTime,
ColsAtCompileTime = traits<XprType>::ColsAtCompileTime,
MaxRowsAtCompileTime = traits<XprType>::MaxRowsAtCompileTime,
MaxColsAtCompileTime = traits<XprType>::MaxColsAtCompileTime,
ArgTypeIsRowMajor = (int(evaluator<ArgType>::Flags) & RowMajorBit) != 0,
IsRowMajor = (MaxRowsAtCompileTime == 1 && MaxColsAtCompileTime != 1) ? 1
: (MaxColsAtCompileTime == 1 && MaxRowsAtCompileTime != 1) ? 0
: ArgTypeIsRowMajor,
HasSameStorageOrderAsArgType = (IsRowMajor == ArgTypeIsRowMajor),
InnerSize = IsRowMajor ? int(ColsAtCompileTime) : int(RowsAtCompileTime),
InnerStrideAtCompileTime = HasSameStorageOrderAsArgType ? int(inner_stride_at_compile_time<ArgType>::value)
: int(outer_stride_at_compile_time<ArgType>::value),
OuterStrideAtCompileTime = HasSameStorageOrderAsArgType ? int(outer_stride_at_compile_time<ArgType>::value)
: int(inner_stride_at_compile_time<ArgType>::value),
MaskPacketAccessBit = (InnerStrideAtCompileTime == 1 || HasSameStorageOrderAsArgType) ? PacketAccessBit : 0,
FlagsLinearAccessBit = (RowsAtCompileTime == 1 || ColsAtCompileTime == 1 ||
(InnerPanel && (evaluator<ArgType>::Flags & LinearAccessBit)))
? LinearAccessBit
: 0,
FlagsRowMajorBit = XprType::Flags & RowMajorBit,
Flags0 = evaluator<ArgType>::Flags & ((HereditaryBits & ~RowMajorBit) | DirectAccessBit | MaskPacketAccessBit),
Flags = Flags0 | FlagsLinearAccessBit | FlagsRowMajorBit,
PacketAlignment = unpacket_traits<PacketScalar>::alignment,
Alignment0 = (InnerPanel && (OuterStrideAtCompileTime != Dynamic) && (OuterStrideAtCompileTime != 0) &&
(((OuterStrideAtCompileTime * int(sizeof(Scalar))) % int(PacketAlignment)) == 0))
? int(PacketAlignment)
: 0,
Alignment = plain_enum_min(evaluator<ArgType>::Alignment, Alignment0)
};
using block_evaluator_type = block_evaluator<ArgType, BlockRows, BlockCols, InnerPanel>;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit evaluator(const XprType& block)
: block_evaluator_type(block) {
EIGEN_INTERNAL_CHECK_COST_VALUE(CoeffReadCost);
}
};
// no direct-access => dispatch to a unary evaluator
template <typename ArgType, int BlockRows, int BlockCols, bool InnerPanel>
struct block_evaluator<ArgType, BlockRows, BlockCols, InnerPanel, /*HasDirectAccess*/ false>
: unary_evaluator<Block<ArgType, BlockRows, BlockCols, InnerPanel>> {
using XprType = Block<ArgType, BlockRows, BlockCols, InnerPanel>;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit block_evaluator(const XprType& block)
: unary_evaluator<XprType>(block) {}
};
template <typename ArgType, int BlockRows, int BlockCols, bool InnerPanel>
struct unary_evaluator<Block<ArgType, BlockRows, BlockCols, InnerPanel>, IndexBased>
: evaluator_base<Block<ArgType, BlockRows, BlockCols, InnerPanel>> {
using XprType = Block<ArgType, BlockRows, BlockCols, InnerPanel>;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit unary_evaluator(const XprType& block)
: m_argImpl(block.nestedExpression()),
m_startRow(block.startRow()),
m_startCol(block.startCol()),
m_linear_offset(ForwardLinearAccess
? (ArgType::IsRowMajor
? block.startRow() * block.nestedExpression().cols() + block.startCol()
: block.startCol() * block.nestedExpression().rows() + block.startRow())
: 0) {}
using Scalar = typename XprType::Scalar;
using CoeffReturnType = typename XprType::CoeffReturnType;
enum {
RowsAtCompileTime = XprType::RowsAtCompileTime,
ForwardLinearAccess = (InnerPanel || int(XprType::IsRowMajor) == int(ArgType::IsRowMajor)) &&
bool(evaluator<ArgType>::Flags & LinearAccessBit)
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const {
return m_argImpl.coeff(m_startRow.value() + row, m_startCol.value() + col);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return linear_coeff_impl(index, bool_constant<ForwardLinearAccess>());
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index row, Index col) {
return m_argImpl.coeffRef(m_startRow.value() + row, m_startCol.value() + col);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index index) {
return linear_coeffRef_impl(index, bool_constant<ForwardLinearAccess>());
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
return m_argImpl.template packet<LoadMode, PacketType>(m_startRow.value() + row, m_startCol.value() + col);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
EIGEN_IF_CONSTEXPR(ForwardLinearAccess)
return m_argImpl.template packet<LoadMode, PacketType>(m_linear_offset.value() + index);
else return packet<LoadMode, PacketType>(RowsAtCompileTime == 1 ? 0 : index, RowsAtCompileTime == 1 ? index : 0);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index row, Index col, const PacketType& x) {
return m_argImpl.template writePacket<StoreMode, PacketType>(m_startRow.value() + row, m_startCol.value() + col, x);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index index, const PacketType& x) {
EIGEN_IF_CONSTEXPR(ForwardLinearAccess)
return m_argImpl.template writePacket<StoreMode, PacketType>(m_linear_offset.value() + index, x);
else return writePacket<StoreMode, PacketType>(RowsAtCompileTime == 1 ? 0 : index,
RowsAtCompileTime == 1 ? index : 0, x);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
return m_argImpl.template packetSegment<LoadMode, PacketType>(m_startRow.value() + row, m_startCol.value() + col,
begin, count);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
EIGEN_IF_CONSTEXPR(ForwardLinearAccess)
return m_argImpl.template packetSegment<LoadMode, PacketType>(m_linear_offset.value() + index, begin, count);
else return packetSegment<LoadMode, PacketType>(RowsAtCompileTime == 1 ? 0 : index,
RowsAtCompileTime == 1 ? index : 0, begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index row, Index col, const PacketType& x, Index begin,
Index count) {
return m_argImpl.template writePacketSegment<StoreMode, PacketType>(m_startRow.value() + row,
m_startCol.value() + col, x, begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index index, const PacketType& x, Index begin,
Index count) {
EIGEN_IF_CONSTEXPR(ForwardLinearAccess)
return m_argImpl.template writePacketSegment<StoreMode, PacketType>(m_linear_offset.value() + index, x, begin,
count);
else return writePacketSegment<StoreMode, PacketType>(RowsAtCompileTime == 1 ? 0 : index,
RowsAtCompileTime == 1 ? index : 0, x, begin, count);
}
protected:
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType
linear_coeff_impl(Index index, std::true_type /* ForwardLinearAccess */) const {
return m_argImpl.coeff(m_linear_offset.value() + index);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType
linear_coeff_impl(Index index, std::false_type /* not ForwardLinearAccess */) const {
return coeff(RowsAtCompileTime == 1 ? 0 : index, RowsAtCompileTime == 1 ? index : 0);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& linear_coeffRef_impl(
Index index, std::true_type /* ForwardLinearAccess */) {
return m_argImpl.coeffRef(m_linear_offset.value() + index);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& linear_coeffRef_impl(
Index index, std::false_type /* not ForwardLinearAccess */) {
return coeffRef(RowsAtCompileTime == 1 ? 0 : index, RowsAtCompileTime == 1 ? index : 0);
}
evaluator<ArgType> m_argImpl;
const variable_if_dynamic<Index, (ArgType::RowsAtCompileTime == 1 && BlockRows == 1) ? 0 : Dynamic> m_startRow;
const variable_if_dynamic<Index, (ArgType::ColsAtCompileTime == 1 && BlockCols == 1) ? 0 : Dynamic> m_startCol;
const variable_if_dynamic<Index, ForwardLinearAccess ? Dynamic : 0> m_linear_offset;
};
// 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>
: mapbase_evaluator<Block<ArgType, BlockRows, BlockCols, InnerPanel>,
typename Block<ArgType, BlockRows, BlockCols, InnerPanel>::PlainObject> {
using XprType = Block<ArgType, BlockRows, BlockCols, InnerPanel>;
using Scalar = typename XprType::Scalar;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit block_evaluator(const XprType& block)
: mapbase_evaluator<XprType, typename XprType::PlainObject>(block) {
eigen_internal_assert((internal::is_constant_evaluated() ||
(std::uintptr_t(block.data()) % plain_enum_max(1, evaluator<XprType>::Alignment)) == 0) &&
"data is not aligned");
}
};
// -------------------- Replicate --------------------
template <typename ArgType, int RowFactor, int ColFactor>
struct unary_evaluator<Replicate<ArgType, RowFactor, ColFactor>>
: evaluator_base<Replicate<ArgType, RowFactor, ColFactor>> {
using XprType = Replicate<ArgType, RowFactor, ColFactor>;
using CoeffReturnType = typename XprType::CoeffReturnType;
enum { Factor = (RowFactor == Dynamic || ColFactor == Dynamic) ? Dynamic : RowFactor * ColFactor };
using ArgTypeNested = typename nested_eval<ArgType, Factor>::type;
using ArgTypeNestedCleaned = remove_all_t<ArgTypeNested>;
enum {
CoeffReadCost = evaluator<ArgTypeNestedCleaned>::CoeffReadCost,
LinearAccessMask = XprType::IsVectorAtCompileTime ? LinearAccessBit : 0,
Flags = (evaluator<ArgTypeNestedCleaned>::Flags & (HereditaryBits | LinearAccessMask) & ~RowMajorBit) |
(traits<XprType>::Flags & RowMajorBit),
Alignment = evaluator<ArgTypeNestedCleaned>::Alignment
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit unary_evaluator(const XprType& replicate)
: m_arg(replicate.nestedExpression()),
m_argImpl(m_arg),
m_rows(replicate.nestedExpression().rows()),
m_cols(replicate.nestedExpression().cols()) {}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const {
// try to avoid using modulo; this is a pure optimization strategy
const Index actual_row = traits<XprType>::RowsAtCompileTime == 1 ? 0 : RowFactor == 1 ? row : row % m_rows.value();
const Index actual_col = traits<XprType>::ColsAtCompileTime == 1 ? 0 : ColFactor == 1 ? col : col % m_cols.value();
return m_argImpl.coeff(actual_row, actual_col);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
// try to avoid using modulo; this is a pure optimization strategy
const Index actual_index = traits<XprType>::RowsAtCompileTime == 1
? (ColFactor == 1 ? index : index % m_cols.value())
: (RowFactor == 1 ? index : index % m_rows.value());
return m_argImpl.coeff(actual_index);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
const Index actual_row = traits<XprType>::RowsAtCompileTime == 1 ? 0 : RowFactor == 1 ? row : row % m_rows.value();
const Index actual_col = traits<XprType>::ColsAtCompileTime == 1 ? 0 : ColFactor == 1 ? col : col % m_cols.value();
return m_argImpl.template packet<LoadMode, PacketType>(actual_row, actual_col);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
const Index actual_index = traits<XprType>::RowsAtCompileTime == 1
? (ColFactor == 1 ? index : index % m_cols.value())
: (RowFactor == 1 ? index : index % m_rows.value());
return m_argImpl.template packet<LoadMode, PacketType>(actual_index);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
const Index actual_row = traits<XprType>::RowsAtCompileTime == 1 ? 0 : RowFactor == 1 ? row : row % m_rows.value();
const Index actual_col = traits<XprType>::ColsAtCompileTime == 1 ? 0 : ColFactor == 1 ? col : col % m_cols.value();
return m_argImpl.template packetSegment<LoadMode, PacketType>(actual_row, actual_col, begin, count);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
const Index actual_index = traits<XprType>::RowsAtCompileTime == 1
? (ColFactor == 1 ? index : index % m_cols.value())
: (RowFactor == 1 ? index : index % m_rows.value());
return m_argImpl.template packetSegment<LoadMode, PacketType>(actual_index, begin, count);
}
protected:
ArgTypeNested m_arg;
evaluator<ArgTypeNestedCleaned> m_argImpl;
const variable_if_dynamic<Index, ArgType::RowsAtCompileTime> m_rows;
const variable_if_dynamic<Index, ArgType::ColsAtCompileTime> m_cols;
};
// -------------------- MatrixWrapper and ArrayWrapper --------------------
//
// evaluator_wrapper_base<T> is a common base class for the
// MatrixWrapper and ArrayWrapper evaluators.
template <typename XprType>
struct evaluator_wrapper_base : evaluator_base<XprType> {
using ArgType = remove_all_t<typename XprType::NestedExpressionType>;
enum {
CoeffReadCost = evaluator<ArgType>::CoeffReadCost,
Flags = evaluator<ArgType>::Flags,
Alignment = evaluator<ArgType>::Alignment
};
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE explicit evaluator_wrapper_base(const ArgType& arg) : m_argImpl(arg) {}
using Scalar = typename ArgType::Scalar;
using CoeffReturnType = typename ArgType::CoeffReturnType;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index col) const {
return m_argImpl.coeff(row, col);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return m_argImpl.coeff(index);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index row, Index col) {
return m_argImpl.coeffRef(row, col);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index index) { return m_argImpl.coeffRef(index); }
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
return m_argImpl.template packet<LoadMode, PacketType>(row, col);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
return m_argImpl.template packet<LoadMode, PacketType>(index);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index row, Index col, const PacketType& x) {
m_argImpl.template writePacket<StoreMode>(row, col, x);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index index, const PacketType& x) {
m_argImpl.template writePacket<StoreMode>(index, x);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
return m_argImpl.template packetSegment<LoadMode, PacketType>(row, col, begin, count);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
return m_argImpl.template packetSegment<LoadMode, PacketType>(index, begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index row, Index col, const PacketType& x, Index begin,
Index count) {
m_argImpl.template writePacketSegment<StoreMode>(row, col, x, begin, count);
}
template <int StoreMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index index, const PacketType& x, Index begin,
Index count) {
m_argImpl.template writePacketSegment<StoreMode>(index, x, begin, count);
}
protected:
evaluator<ArgType> m_argImpl;
};
template <typename TArgType>
struct unary_evaluator<MatrixWrapper<TArgType>> : evaluator_wrapper_base<MatrixWrapper<TArgType>> {
using XprType = MatrixWrapper<TArgType>;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit unary_evaluator(const XprType& wrapper)
: evaluator_wrapper_base<MatrixWrapper<TArgType>>(wrapper.nestedExpression()) {}
};
template <typename TArgType>
struct unary_evaluator<ArrayWrapper<TArgType>> : evaluator_wrapper_base<ArrayWrapper<TArgType>> {
using XprType = ArrayWrapper<TArgType>;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit unary_evaluator(const XprType& wrapper)
: evaluator_wrapper_base<ArrayWrapper<TArgType>>(wrapper.nestedExpression()) {}
};
// -------------------- Reverse --------------------
// defined in Reverse.h:
template <typename PacketType, bool ReversePacket>
struct reverse_packet_cond;
template <typename ArgType, int Direction>
struct unary_evaluator<Reverse<ArgType, Direction>> : evaluator_base<Reverse<ArgType, Direction>> {
using XprType = Reverse<ArgType, Direction>;
using Scalar = typename XprType::Scalar;
using CoeffReturnType = typename XprType::CoeffReturnType;
enum {
IsRowMajor = XprType::IsRowMajor,
IsColMajor = !IsRowMajor,
ReverseRow = (Direction == Vertical) || (Direction == BothDirections),
ReverseCol = (Direction == Horizontal) || (Direction == BothDirections),
ReversePacket = (Direction == BothDirections) || ((Direction == Vertical) && IsColMajor) ||
((Direction == Horizontal) && IsRowMajor),
CoeffReadCost = evaluator<ArgType>::CoeffReadCost,
// let's enable LinearAccess only with vectorization because of the product overhead
// FIXME: consider enabling DirectAccess with negative strides.
Flags0 = evaluator<ArgType>::Flags,
LinearAccess =
((Direction == BothDirections) && (int(Flags0) & PacketAccessBit)) ||
((ReverseRow && XprType::ColsAtCompileTime == 1) || (ReverseCol && XprType::RowsAtCompileTime == 1))
? LinearAccessBit
: 0,
Flags = int(Flags0) & (HereditaryBits | PacketAccessBit | LinearAccess),
Alignment = 0 // FIXME: in some rare cases, Alignment could be preserved.
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit unary_evaluator(const XprType& reverse)
: m_argImpl(reverse.nestedExpression()),
m_rows(ReverseRow ? reverse.nestedExpression().rows() : 1),
m_cols(ReverseCol ? reverse.nestedExpression().cols() : 1) {}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE 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);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return m_argImpl.coeff(m_rows.value() * m_cols.value() - index - 1);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index row, Index col) {
return m_argImpl.coeffRef(ReverseRow ? m_rows.value() - row - 1 : row, ReverseCol ? m_cols.value() - col - 1 : col);
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index index) {
return m_argImpl.coeffRef(m_rows.value() * m_cols.value() - index - 1);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index row, Index col) const {
static constexpr int PacketSize = unpacket_traits<PacketType>::size;
static constexpr int OffsetRow = ReverseRow && IsColMajor ? PacketSize : 1;
static constexpr int OffsetCol = ReverseCol && IsRowMajor ? PacketSize : 1;
using reverse_packet = reverse_packet_cond<PacketType, ReversePacket>;
Index actualRow = ReverseRow ? m_rows.value() - row - OffsetRow : row;
Index actualCol = ReverseCol ? m_cols.value() - col - OffsetCol : col;
return reverse_packet::run(m_argImpl.template packet<LoadMode, PacketType>(actualRow, actualCol));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packet(Index index) const {
static constexpr int PacketSize = unpacket_traits<PacketType>::size;
Index actualIndex = m_rows.value() * m_cols.value() - index - PacketSize;
return preverse(m_argImpl.template packet<LoadMode, PacketType>(actualIndex));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index row, Index col, const PacketType& x) {
static constexpr int PacketSize = unpacket_traits<PacketType>::size;
static constexpr int OffsetRow = ReverseRow && IsColMajor ? PacketSize : 1;
static constexpr int OffsetCol = ReverseCol && IsRowMajor ? PacketSize : 1;
using reverse_packet = reverse_packet_cond<PacketType, ReversePacket>;
Index actualRow = ReverseRow ? m_rows.value() - row - OffsetRow : row;
Index actualCol = ReverseCol ? m_cols.value() - col - OffsetCol : col;
m_argImpl.template writePacket<LoadMode>(actualRow, actualCol, reverse_packet::run(x));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacket(Index index, const PacketType& x) {
static constexpr int PacketSize = unpacket_traits<PacketType>::size;
Index actualIndex = m_rows.value() * m_cols.value() - index - PacketSize;
m_argImpl.template writePacket<LoadMode>(actualIndex, preverse(x));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index row, Index col, Index begin, Index count) const {
static constexpr int PacketSize = unpacket_traits<PacketType>::size;
static constexpr int OffsetRow = ReverseRow && IsColMajor ? PacketSize : 1;
static constexpr int OffsetCol = ReverseCol && IsRowMajor ? PacketSize : 1;
using reverse_packet = reverse_packet_cond<PacketType, ReversePacket>;
Index actualRow = ReverseRow ? m_rows.value() - row - OffsetRow : row;
Index actualCol = ReverseCol ? m_cols.value() - col - OffsetCol : col;
Index actualBegin = ReversePacket ? (PacketSize - count - begin) : begin;
return reverse_packet::run(
m_argImpl.template packetSegment<LoadMode, PacketType>(actualRow, actualCol, actualBegin, count));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketType packetSegment(Index index, Index begin, Index count) const {
static constexpr int PacketSize = unpacket_traits<PacketType>::size;
Index actualIndex = m_rows.value() * m_cols.value() - index - PacketSize;
Index actualBegin = PacketSize - count - begin;
return preverse(m_argImpl.template packetSegment<LoadMode, PacketType>(actualIndex, actualBegin, count));
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index row, Index col, const PacketType& x, Index begin,
Index count) {
static constexpr int PacketSize = unpacket_traits<PacketType>::size;
static constexpr int OffsetRow = ReverseRow && IsColMajor ? PacketSize : 1;
static constexpr int OffsetCol = ReverseCol && IsRowMajor ? PacketSize : 1;
using reverse_packet = reverse_packet_cond<PacketType, ReversePacket>;
Index actualRow = ReverseRow ? m_rows.value() - row - OffsetRow : row;
Index actualCol = ReverseCol ? m_cols.value() - col - OffsetCol : col;
Index actualBegin = ReversePacket ? (PacketSize - count - begin) : begin;
m_argImpl.template writePacketSegment<LoadMode>(actualRow, actualCol, reverse_packet::run(x), actualBegin, count);
}
template <int LoadMode, typename PacketType>
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE void writePacketSegment(Index index, const PacketType& x, Index begin,
Index count) {
static constexpr int PacketSize = unpacket_traits<PacketType>::size;
Index actualIndex = m_rows.value() * m_cols.value() - index - PacketSize;
Index actualBegin = PacketSize - count - begin;
m_argImpl.template writePacketSegment<LoadMode>(actualIndex, preverse(x), actualBegin, count);
}
protected:
evaluator<ArgType> m_argImpl;
// If we do not reverse rows, then we do not need to know the number of rows; same for columns
// Nonetheless, in this case it is important to set to 1 such that the coeff(index) method works fine for vectors.
const variable_if_dynamic<Index, ReverseRow ? ArgType::RowsAtCompileTime : 1> m_rows;
const variable_if_dynamic<Index, ReverseCol ? ArgType::ColsAtCompileTime : 1> m_cols;
};
// -------------------- Diagonal --------------------
template <typename ArgType, int DiagIndex>
struct evaluator<Diagonal<ArgType, DiagIndex>> : evaluator_base<Diagonal<ArgType, DiagIndex>> {
using XprType = Diagonal<ArgType, DiagIndex>;
enum {
CoeffReadCost = evaluator<ArgType>::CoeffReadCost,
Flags = static_cast<unsigned int>(evaluator<ArgType>::Flags & (HereditaryBits | DirectAccessBit) & ~RowMajorBit) |
LinearAccessBit,
Alignment = 0
};
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE explicit evaluator(const XprType& diagonal)
: m_argImpl(diagonal.nestedExpression()), m_index(diagonal.index()) {}
using Scalar = typename XprType::Scalar;
using CoeffReturnType = typename XprType::CoeffReturnType;
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index row, Index) const {
return m_argImpl.coeff(row + rowOffset(), row + colOffset());
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index) const {
return m_argImpl.coeff(index + rowOffset(), index + colOffset());
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index row, Index) {
return m_argImpl.coeffRef(row + rowOffset(), row + colOffset());
}
EIGEN_DEVICE_FUNC constexpr EIGEN_STRONG_INLINE Scalar& coeffRef(Index index) {
return m_argImpl.coeffRef(index + rowOffset(), index + colOffset());
}
protected:
evaluator<ArgType> m_argImpl;
const variable_if_dynamicindex<Index, XprType::DiagIndex> m_index;
private:
EIGEN_DEVICE_FUNC constexpr Index rowOffset() const { return m_index.value() > 0 ? 0 : -m_index.value(); }
EIGEN_DEVICE_FUNC constexpr Index colOffset() const { return m_index.value() > 0 ? m_index.value() : 0; }
};
//----------------------------------------------------------------------
// deprecated code
//----------------------------------------------------------------------
// -------------------- EvalToTemp --------------------
// expression class for evaluating nested expression to a temporary
template <typename ArgType>
class EvalToTemp;
template <typename ArgType>
struct traits<EvalToTemp<ArgType>> : public traits<ArgType> {};
template <typename ArgType>
class EvalToTemp : public dense_xpr_base<EvalToTemp<ArgType>>::type {
public:
using Base = typename dense_xpr_base<EvalToTemp>::type;
EIGEN_GENERIC_PUBLIC_INTERFACE(EvalToTemp)
explicit EvalToTemp(const ArgType& arg) : m_arg(arg) {}
const ArgType& arg() const { return m_arg; }
constexpr Index rows() const noexcept { return m_arg.rows(); }
constexpr Index cols() const noexcept { return m_arg.cols(); }
private:
const ArgType& m_arg;
};
template <typename ArgType>
struct evaluator<EvalToTemp<ArgType>> : public evaluator<typename ArgType::PlainObject> {
using XprType = EvalToTemp<ArgType>;
using PlainObject = typename ArgType::PlainObject;
using Base = evaluator<PlainObject>;
EIGEN_DEVICE_FUNC constexpr explicit evaluator(const XprType& xpr) : m_result(xpr.arg()) {
internal::construct_at<Base>(this, m_result);
}
// This constructor is used when nesting an EvalTo evaluator in another evaluator
EIGEN_DEVICE_FUNC constexpr evaluator(const ArgType& arg) : m_result(arg) {
internal::construct_at<Base>(this, m_result);
}
protected:
PlainObject m_result;
};
} // namespace internal
} // end namespace Eigen
#endif // EIGEN_COREEVALUATORS_H