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TensorExpr.h
1// This file is part of Eigen, a lightweight C++ template library
2// for linear algebra.
3//
4// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
5//
6// This Source Code Form is subject to the terms of the Mozilla
7// Public License v. 2.0. If a copy of the MPL was not distributed
8// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
9
10#ifndef EIGEN_CXX11_TENSOR_TENSOR_EXPR_H
11#define EIGEN_CXX11_TENSOR_TENSOR_EXPR_H
12
13namespace Eigen {
14
30namespace internal {
31template<typename NullaryOp, typename XprType>
32struct traits<TensorCwiseNullaryOp<NullaryOp, XprType> >
33 : traits<XprType>
34{
35 typedef traits<XprType> XprTraits;
36 typedef typename XprType::Scalar Scalar;
37 typedef typename XprType::Nested XprTypeNested;
38 typedef typename remove_reference<XprTypeNested>::type _XprTypeNested;
39 static const int NumDimensions = XprTraits::NumDimensions;
40 static const int Layout = XprTraits::Layout;
41
42 enum {
43 Flags = 0
44 };
45};
46
47} // end namespace internal
48
49
50
51template<typename NullaryOp, typename XprType>
52class TensorCwiseNullaryOp : public TensorBase<TensorCwiseNullaryOp<NullaryOp, XprType>, ReadOnlyAccessors>
53{
54 public:
55 typedef typename Eigen::internal::traits<TensorCwiseNullaryOp>::Scalar Scalar;
56 typedef typename Eigen::NumTraits<Scalar>::Real RealScalar;
57 typedef typename XprType::CoeffReturnType CoeffReturnType;
58 typedef TensorCwiseNullaryOp<NullaryOp, XprType> Nested;
59 typedef typename Eigen::internal::traits<TensorCwiseNullaryOp>::StorageKind StorageKind;
60 typedef typename Eigen::internal::traits<TensorCwiseNullaryOp>::Index Index;
61
62 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorCwiseNullaryOp(const XprType& xpr, const NullaryOp& func = NullaryOp())
63 : m_xpr(xpr), m_functor(func) {}
64
65 EIGEN_DEVICE_FUNC
66 const typename internal::remove_all<typename XprType::Nested>::type&
67 nestedExpression() const { return m_xpr; }
68
69 EIGEN_DEVICE_FUNC
70 const NullaryOp& functor() const { return m_functor; }
71
72 protected:
73 typename XprType::Nested m_xpr;
74 const NullaryOp m_functor;
75};
76
77
78
79namespace internal {
80template<typename UnaryOp, typename XprType>
81struct traits<TensorCwiseUnaryOp<UnaryOp, XprType> >
82 : traits<XprType>
83{
84 // TODO(phli): Add InputScalar, InputPacket. Check references to
85 // current Scalar/Packet to see if the intent is Input or Output.
86 typedef typename result_of<UnaryOp(typename XprType::Scalar)>::type Scalar;
87 typedef traits<XprType> XprTraits;
88 typedef typename XprType::Nested XprTypeNested;
89 typedef typename remove_reference<XprTypeNested>::type _XprTypeNested;
90 static const int NumDimensions = XprTraits::NumDimensions;
91 static const int Layout = XprTraits::Layout;
92};
93
94template<typename UnaryOp, typename XprType>
95struct eval<TensorCwiseUnaryOp<UnaryOp, XprType>, Eigen::Dense>
96{
97 typedef const TensorCwiseUnaryOp<UnaryOp, XprType>& type;
98};
99
100template<typename UnaryOp, typename XprType>
101struct nested<TensorCwiseUnaryOp<UnaryOp, XprType>, 1, typename eval<TensorCwiseUnaryOp<UnaryOp, XprType> >::type>
102{
103 typedef TensorCwiseUnaryOp<UnaryOp, XprType> type;
104};
105
106} // end namespace internal
107
108
109
110template<typename UnaryOp, typename XprType>
111class TensorCwiseUnaryOp : public TensorBase<TensorCwiseUnaryOp<UnaryOp, XprType>, ReadOnlyAccessors>
112{
113 public:
114 // TODO(phli): Add InputScalar, InputPacket. Check references to
115 // current Scalar/Packet to see if the intent is Input or Output.
116 typedef typename Eigen::internal::traits<TensorCwiseUnaryOp>::Scalar Scalar;
117 typedef typename Eigen::NumTraits<Scalar>::Real RealScalar;
118 typedef Scalar CoeffReturnType;
119 typedef typename Eigen::internal::nested<TensorCwiseUnaryOp>::type Nested;
120 typedef typename Eigen::internal::traits<TensorCwiseUnaryOp>::StorageKind StorageKind;
121 typedef typename Eigen::internal::traits<TensorCwiseUnaryOp>::Index Index;
122
123 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorCwiseUnaryOp(const XprType& xpr, const UnaryOp& func = UnaryOp())
124 : m_xpr(xpr), m_functor(func) {}
125
126 EIGEN_DEVICE_FUNC
127 const UnaryOp& functor() const { return m_functor; }
128
130 EIGEN_DEVICE_FUNC
131 const typename internal::remove_all<typename XprType::Nested>::type&
132 nestedExpression() const { return m_xpr; }
133
134 protected:
135 typename XprType::Nested m_xpr;
136 const UnaryOp m_functor;
137};
138
139
140namespace internal {
141template<typename BinaryOp, typename LhsXprType, typename RhsXprType>
142struct traits<TensorCwiseBinaryOp<BinaryOp, LhsXprType, RhsXprType> >
143{
144 // Type promotion to handle the case where the types of the lhs and the rhs
145 // are different.
146 // TODO(phli): Add Lhs/RhsScalar, Lhs/RhsPacket. Check references to
147 // current Scalar/Packet to see if the intent is Inputs or Output.
148 typedef typename result_of<
149 BinaryOp(typename LhsXprType::Scalar,
150 typename RhsXprType::Scalar)>::type Scalar;
151 typedef traits<LhsXprType> XprTraits;
152 typedef typename promote_storage_type<
153 typename traits<LhsXprType>::StorageKind,
154 typename traits<RhsXprType>::StorageKind>::ret StorageKind;
155 typedef typename promote_index_type<
156 typename traits<LhsXprType>::Index,
157 typename traits<RhsXprType>::Index>::type Index;
158 typedef typename LhsXprType::Nested LhsNested;
159 typedef typename RhsXprType::Nested RhsNested;
160 typedef typename remove_reference<LhsNested>::type _LhsNested;
161 typedef typename remove_reference<RhsNested>::type _RhsNested;
162 static const int NumDimensions = XprTraits::NumDimensions;
163 static const int Layout = XprTraits::Layout;
164
165 enum {
166 Flags = 0
167 };
168};
169
170template<typename BinaryOp, typename LhsXprType, typename RhsXprType>
171struct eval<TensorCwiseBinaryOp<BinaryOp, LhsXprType, RhsXprType>, Eigen::Dense>
172{
173 typedef const TensorCwiseBinaryOp<BinaryOp, LhsXprType, RhsXprType>& type;
174};
175
176template<typename BinaryOp, typename LhsXprType, typename RhsXprType>
177struct nested<TensorCwiseBinaryOp<BinaryOp, LhsXprType, RhsXprType>, 1, typename eval<TensorCwiseBinaryOp<BinaryOp, LhsXprType, RhsXprType> >::type>
178{
179 typedef TensorCwiseBinaryOp<BinaryOp, LhsXprType, RhsXprType> type;
180};
181
182} // end namespace internal
183
184
185
186template<typename BinaryOp, typename LhsXprType, typename RhsXprType>
187class TensorCwiseBinaryOp : public TensorBase<TensorCwiseBinaryOp<BinaryOp, LhsXprType, RhsXprType>, ReadOnlyAccessors>
188{
189 public:
190 // TODO(phli): Add Lhs/RhsScalar, Lhs/RhsPacket. Check references to
191 // current Scalar/Packet to see if the intent is Inputs or Output.
192 typedef typename Eigen::internal::traits<TensorCwiseBinaryOp>::Scalar Scalar;
193 typedef typename Eigen::NumTraits<Scalar>::Real RealScalar;
194 typedef Scalar CoeffReturnType;
195 typedef typename Eigen::internal::nested<TensorCwiseBinaryOp>::type Nested;
196 typedef typename Eigen::internal::traits<TensorCwiseBinaryOp>::StorageKind StorageKind;
197 typedef typename Eigen::internal::traits<TensorCwiseBinaryOp>::Index Index;
198
199 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorCwiseBinaryOp(const LhsXprType& lhs, const RhsXprType& rhs, const BinaryOp& func = BinaryOp())
200 : m_lhs_xpr(lhs), m_rhs_xpr(rhs), m_functor(func) {}
201
202 EIGEN_DEVICE_FUNC
203 const BinaryOp& functor() const { return m_functor; }
204
206 EIGEN_DEVICE_FUNC
207 const typename internal::remove_all<typename LhsXprType::Nested>::type&
208 lhsExpression() const { return m_lhs_xpr; }
209
210 EIGEN_DEVICE_FUNC
211 const typename internal::remove_all<typename RhsXprType::Nested>::type&
212 rhsExpression() const { return m_rhs_xpr; }
213
214 protected:
215 typename LhsXprType::Nested m_lhs_xpr;
216 typename RhsXprType::Nested m_rhs_xpr;
217 const BinaryOp m_functor;
218};
219
220
221namespace internal {
222template<typename TernaryOp, typename Arg1XprType, typename Arg2XprType, typename Arg3XprType>
223struct traits<TensorCwiseTernaryOp<TernaryOp, Arg1XprType, Arg2XprType, Arg3XprType> >
224{
225 // Type promotion to handle the case where the types of the args are different.
226 typedef typename result_of<
227 TernaryOp(typename Arg1XprType::Scalar,
228 typename Arg2XprType::Scalar,
229 typename Arg3XprType::Scalar)>::type Scalar;
230 typedef traits<Arg1XprType> XprTraits;
231 typedef typename traits<Arg1XprType>::StorageKind StorageKind;
232 typedef typename traits<Arg1XprType>::Index Index;
233 typedef typename Arg1XprType::Nested Arg1Nested;
234 typedef typename Arg2XprType::Nested Arg2Nested;
235 typedef typename Arg3XprType::Nested Arg3Nested;
236 typedef typename remove_reference<Arg1Nested>::type _Arg1Nested;
237 typedef typename remove_reference<Arg2Nested>::type _Arg2Nested;
238 typedef typename remove_reference<Arg3Nested>::type _Arg3Nested;
239 static const int NumDimensions = XprTraits::NumDimensions;
240 static const int Layout = XprTraits::Layout;
241
242 enum {
243 Flags = 0
244 };
245};
246
247template<typename TernaryOp, typename Arg1XprType, typename Arg2XprType, typename Arg3XprType>
248struct eval<TensorCwiseTernaryOp<TernaryOp, Arg1XprType, Arg2XprType, Arg3XprType>, Eigen::Dense>
249{
250 typedef const TensorCwiseTernaryOp<TernaryOp, Arg1XprType, Arg2XprType, Arg3XprType>& type;
251};
252
253template<typename TernaryOp, typename Arg1XprType, typename Arg2XprType, typename Arg3XprType>
254struct nested<TensorCwiseTernaryOp<TernaryOp, Arg1XprType, Arg2XprType, Arg3XprType>, 1, typename eval<TensorCwiseTernaryOp<TernaryOp, Arg1XprType, Arg2XprType, Arg3XprType> >::type>
255{
256 typedef TensorCwiseTernaryOp<TernaryOp, Arg1XprType, Arg2XprType, Arg3XprType> type;
257};
258
259} // end namespace internal
260
261
262
263template<typename TernaryOp, typename Arg1XprType, typename Arg2XprType, typename Arg3XprType>
264class TensorCwiseTernaryOp : public TensorBase<TensorCwiseTernaryOp<TernaryOp, Arg1XprType, Arg2XprType, Arg3XprType>, ReadOnlyAccessors>
265{
266 public:
267 typedef typename Eigen::internal::traits<TensorCwiseTernaryOp>::Scalar Scalar;
268 typedef typename Eigen::NumTraits<Scalar>::Real RealScalar;
269 typedef Scalar CoeffReturnType;
270 typedef typename Eigen::internal::nested<TensorCwiseTernaryOp>::type Nested;
271 typedef typename Eigen::internal::traits<TensorCwiseTernaryOp>::StorageKind StorageKind;
272 typedef typename Eigen::internal::traits<TensorCwiseTernaryOp>::Index Index;
273
274 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE TensorCwiseTernaryOp(const Arg1XprType& arg1, const Arg2XprType& arg2, const Arg3XprType& arg3, const TernaryOp& func = TernaryOp())
275 : m_arg1_xpr(arg1), m_arg2_xpr(arg2), m_arg3_xpr(arg3), m_functor(func) {}
276
277 EIGEN_DEVICE_FUNC
278 const TernaryOp& functor() const { return m_functor; }
279
281 EIGEN_DEVICE_FUNC
282 const typename internal::remove_all<typename Arg1XprType::Nested>::type&
283 arg1Expression() const { return m_arg1_xpr; }
284
285 EIGEN_DEVICE_FUNC
286 const typename internal::remove_all<typename Arg2XprType::Nested>::type&
287 arg2Expression() const { return m_arg2_xpr; }
288
289 EIGEN_DEVICE_FUNC
290 const typename internal::remove_all<typename Arg3XprType::Nested>::type&
291 arg3Expression() const { return m_arg3_xpr; }
292
293 protected:
294 typename Arg1XprType::Nested m_arg1_xpr;
295 typename Arg2XprType::Nested m_arg2_xpr;
296 typename Arg3XprType::Nested m_arg3_xpr;
297 const TernaryOp m_functor;
298};
299
300
301namespace internal {
302template<typename IfXprType, typename ThenXprType, typename ElseXprType>
303struct traits<TensorSelectOp<IfXprType, ThenXprType, ElseXprType> >
304 : traits<ThenXprType>
305{
306 typedef typename traits<ThenXprType>::Scalar Scalar;
307 typedef traits<ThenXprType> XprTraits;
308 typedef typename promote_storage_type<typename traits<ThenXprType>::StorageKind,
309 typename traits<ElseXprType>::StorageKind>::ret StorageKind;
310 typedef typename promote_index_type<typename traits<ElseXprType>::Index,
311 typename traits<ThenXprType>::Index>::type Index;
312 typedef typename IfXprType::Nested IfNested;
313 typedef typename ThenXprType::Nested ThenNested;
314 typedef typename ElseXprType::Nested ElseNested;
315 static const int NumDimensions = XprTraits::NumDimensions;
316 static const int Layout = XprTraits::Layout;
317};
318
319template<typename IfXprType, typename ThenXprType, typename ElseXprType>
320struct eval<TensorSelectOp<IfXprType, ThenXprType, ElseXprType>, Eigen::Dense>
321{
322 typedef const TensorSelectOp<IfXprType, ThenXprType, ElseXprType>& type;
323};
324
325template<typename IfXprType, typename ThenXprType, typename ElseXprType>
326struct nested<TensorSelectOp<IfXprType, ThenXprType, ElseXprType>, 1, typename eval<TensorSelectOp<IfXprType, ThenXprType, ElseXprType> >::type>
327{
328 typedef TensorSelectOp<IfXprType, ThenXprType, ElseXprType> type;
329};
330
331} // end namespace internal
332
333
334template<typename IfXprType, typename ThenXprType, typename ElseXprType>
335class TensorSelectOp : public TensorBase<TensorSelectOp<IfXprType, ThenXprType, ElseXprType>, ReadOnlyAccessors>
336{
337 public:
338 typedef typename Eigen::internal::traits<TensorSelectOp>::Scalar Scalar;
339 typedef typename Eigen::NumTraits<Scalar>::Real RealScalar;
340 typedef typename internal::promote_storage_type<typename ThenXprType::CoeffReturnType,
341 typename ElseXprType::CoeffReturnType>::ret CoeffReturnType;
342 typedef typename Eigen::internal::nested<TensorSelectOp>::type Nested;
343 typedef typename Eigen::internal::traits<TensorSelectOp>::StorageKind StorageKind;
344 typedef typename Eigen::internal::traits<TensorSelectOp>::Index Index;
345
346 EIGEN_DEVICE_FUNC
347 TensorSelectOp(const IfXprType& a_condition,
348 const ThenXprType& a_then,
349 const ElseXprType& a_else)
350 : m_condition(a_condition), m_then(a_then), m_else(a_else)
351 { }
352
353 EIGEN_DEVICE_FUNC
354 const IfXprType& ifExpression() const { return m_condition; }
355
356 EIGEN_DEVICE_FUNC
357 const ThenXprType& thenExpression() const { return m_then; }
358
359 EIGEN_DEVICE_FUNC
360 const ElseXprType& elseExpression() const { return m_else; }
361
362 protected:
363 typename IfXprType::Nested m_condition;
364 typename ThenXprType::Nested m_then;
365 typename ElseXprType::Nested m_else;
366};
367
368
369} // end namespace Eigen
370
371#endif // EIGEN_CXX11_TENSOR_TENSOR_EXPR_H
Namespace containing all symbols from the Eigen library.
Definition: AdolcForward:45