10 #ifndef EIGEN_CXX11_TENSOR_TENSOR_FORCED_EVAL_H 11 #define EIGEN_CXX11_TENSOR_TENSOR_FORCED_EVAL_H 23 template<
typename XprType>
24 struct traits<TensorForcedEvalOp<XprType> >
27 typedef typename XprType::Scalar Scalar;
28 typedef traits<XprType> XprTraits;
29 typedef typename traits<XprType>::StorageKind StorageKind;
30 typedef typename traits<XprType>::Index Index;
31 typedef typename XprType::Nested Nested;
32 typedef typename remove_reference<Nested>::type _Nested;
33 static const int NumDimensions = XprTraits::NumDimensions;
34 static const int Layout = XprTraits::Layout;
41 template<
typename XprType>
42 struct eval<TensorForcedEvalOp<XprType>,
Eigen::Dense>
44 typedef const TensorForcedEvalOp<XprType>& type;
47 template<
typename XprType>
48 struct nested<TensorForcedEvalOp<XprType>, 1, typename eval<TensorForcedEvalOp<XprType> >::type>
50 typedef TensorForcedEvalOp<XprType> type;
57 template<
typename XprType>
58 class TensorForcedEvalOp :
public TensorBase<TensorForcedEvalOp<XprType>, ReadOnlyAccessors>
61 typedef typename Eigen::internal::traits<TensorForcedEvalOp>::Scalar Scalar;
62 typedef typename Eigen::NumTraits<Scalar>::Real RealScalar;
63 typedef typename internal::remove_const<typename XprType::CoeffReturnType>::type CoeffReturnType;
64 typedef typename Eigen::internal::nested<TensorForcedEvalOp>::type Nested;
65 typedef typename Eigen::internal::traits<TensorForcedEvalOp>::StorageKind StorageKind;
66 typedef typename Eigen::internal::traits<TensorForcedEvalOp>::Index Index;
68 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorForcedEvalOp(
const XprType& expr)
72 const typename internal::remove_all<typename XprType::Nested>::type&
73 expression()
const {
return m_xpr; }
76 typename XprType::Nested m_xpr;
80 template<
typename ArgType,
typename Device>
81 struct TensorEvaluator<const TensorForcedEvalOp<ArgType>, Device>
83 typedef TensorForcedEvalOp<ArgType> XprType;
84 typedef typename ArgType::Scalar Scalar;
85 typedef typename TensorEvaluator<ArgType, Device>::Dimensions Dimensions;
86 typedef typename XprType::Index Index;
87 typedef typename XprType::CoeffReturnType CoeffReturnType;
88 typedef typename PacketType<CoeffReturnType, Device>::type PacketReturnType;
89 static const int PacketSize = internal::unpacket_traits<PacketReturnType>::size;
93 PacketAccess = (PacketSize > 1),
94 Layout = TensorEvaluator<ArgType, Device>::Layout,
98 EIGEN_DEVICE_FUNC TensorEvaluator(
const XprType& op,
const Device& device)
99 : m_impl(op.expression(), device), m_op(op.expression()), m_device(device), m_buffer(NULL)
102 EIGEN_DEVICE_FUNC
const Dimensions& dimensions()
const {
return m_impl.dimensions(); }
104 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
bool evalSubExprsIfNeeded(CoeffReturnType*) {
105 const Index numValues = m_impl.dimensions().TotalSize();
106 m_buffer = (CoeffReturnType*)m_device.allocate(numValues *
sizeof(CoeffReturnType));
108 if (NumTraits<CoeffReturnType>::RequireInitialization) {
109 for (Index i = 0; i < numValues; ++i) {
110 new(m_buffer+i) CoeffReturnType();
113 typedef TensorEvalToOp<const ArgType> EvalTo;
114 EvalTo evalToTmp(m_buffer, m_op);
115 const bool PacketAccess = internal::IsVectorizable<Device, const ArgType>::value;
116 internal::TensorExecutor<const EvalTo, Device, PacketAccess>::run(evalToTmp, m_device);
119 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
void cleanup() {
120 m_device.deallocate(m_buffer);
124 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE CoeffReturnType coeff(Index index)
const 126 return m_buffer[index];
129 template<
int LoadMode>
130 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE PacketReturnType packet(Index index)
const 132 return internal::ploadt<PacketReturnType, LoadMode>(m_buffer + index);
135 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorOpCost costPerCoeff(
bool vectorized)
const {
136 return TensorOpCost(
sizeof(CoeffReturnType), 0, 0, vectorized, PacketSize);
139 EIGEN_DEVICE_FUNC Scalar* data()
const {
return m_buffer; }
142 TensorEvaluator<ArgType, Device> m_impl;
144 const Device& m_device;
145 CoeffReturnType* m_buffer;
151 #endif // EIGEN_CXX11_TENSOR_TENSOR_FORCED_EVAL_H Namespace containing all symbols from the Eigen library.
Definition: AdolcForward:45