CwiseBinaryOp.h
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1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr>
5 // Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
6 //
7 // This Source Code Form is subject to the terms of the Mozilla
8 // Public License v. 2.0. If a copy of the MPL was not distributed
9 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
10 
11 #ifndef EIGEN_CWISE_BINARY_OP_H
12 #define EIGEN_CWISE_BINARY_OP_H
13 
14 namespace Eigen {
15 
36 namespace internal {
37 template<typename BinaryOp, typename Lhs, typename Rhs>
38 struct traits<CwiseBinaryOp<BinaryOp, Lhs, Rhs> >
39 {
40  // we must not inherit from traits<Lhs> since it has
41  // the potential to cause problems with MSVC
42  typedef typename remove_all<Lhs>::type Ancestor;
44  enum {
49  };
50 
51  // even though we require Lhs and Rhs to have the same scalar type (see CwiseBinaryOp constructor),
52  // we still want to handle the case when the result type is different.
53  typedef typename result_of<
54  BinaryOp(
55  typename Lhs::Scalar,
56  typename Rhs::Scalar
57  )
58  >::type Scalar;
62  typename traits<Rhs>::Index>::type Index;
63  typedef typename Lhs::Nested LhsNested;
64  typedef typename Rhs::Nested RhsNested;
67  enum {
68  LhsCoeffReadCost = _LhsNested::CoeffReadCost,
69  RhsCoeffReadCost = _RhsNested::CoeffReadCost,
70  LhsFlags = _LhsNested::Flags,
71  RhsFlags = _RhsNested::Flags,
73  StorageOrdersAgree = (int(Lhs::Flags)&RowMajorBit)==(int(Rhs::Flags)&RowMajorBit),
74  Flags0 = (int(LhsFlags) | int(RhsFlags)) & (
76  | (int(LhsFlags) & int(RhsFlags) &
77  ( AlignedBit
78  | (StorageOrdersAgree ? LinearAccessBit : 0)
79  | (functor_traits<BinaryOp>::PacketAccess && StorageOrdersAgree && SameType ? PacketAccessBit : 0)
80  )
81  )
82  ),
83  Flags = (Flags0 & ~RowMajorBit) | (LhsFlags & RowMajorBit),
84  CoeffReadCost = LhsCoeffReadCost + RhsCoeffReadCost + functor_traits<BinaryOp>::Cost
85  };
86 };
87 } // end namespace internal
88 
89 // we require Lhs and Rhs to have the same scalar type. Currently there is no example of a binary functor
90 // that would take two operands of different types. If there were such an example, then this check should be
91 // moved to the BinaryOp functors, on a per-case basis. This would however require a change in the BinaryOp functors, as
92 // currently they take only one typename Scalar template parameter.
93 // It is tempting to always allow mixing different types but remember that this is often impossible in the vectorized paths.
94 // So allowing mixing different types gives very unexpected errors when enabling vectorization, when the user tries to
95 // add together a float matrix and a double matrix.
96 #define EIGEN_CHECK_BINARY_COMPATIBILIY(BINOP,LHS,RHS) \
97  EIGEN_STATIC_ASSERT((internal::functor_is_product_like<BINOP>::ret \
98  ? int(internal::scalar_product_traits<LHS, RHS>::Defined) \
99  : int(internal::is_same<LHS, RHS>::value)), \
100  YOU_MIXED_DIFFERENT_NUMERIC_TYPES__YOU_NEED_TO_USE_THE_CAST_METHOD_OF_MATRIXBASE_TO_CAST_NUMERIC_TYPES_EXPLICITLY)
101 
102 template<typename BinaryOp, typename Lhs, typename Rhs, typename StorageKind>
104 
105 template<typename BinaryOp, typename Lhs, typename Rhs>
107  public CwiseBinaryOpImpl<
108  BinaryOp, Lhs, Rhs,
109  typename internal::promote_storage_type<typename internal::traits<Lhs>::StorageKind,
110  typename internal::traits<Rhs>::StorageKind>::ret>
111 {
112  public:
113 
114  typedef typename CwiseBinaryOpImpl<
115  BinaryOp, Lhs, Rhs,
119 
120  typedef typename internal::nested<Lhs>::type LhsNested;
121  typedef typename internal::nested<Rhs>::type RhsNested;
122  typedef typename internal::remove_reference<LhsNested>::type _LhsNested;
123  typedef typename internal::remove_reference<RhsNested>::type _RhsNested;
124 
125  EIGEN_STRONG_INLINE CwiseBinaryOp(const Lhs& aLhs, const Rhs& aRhs, const BinaryOp& func = BinaryOp())
126  : m_lhs(aLhs), m_rhs(aRhs), m_functor(func)
127  {
128  EIGEN_CHECK_BINARY_COMPATIBILIY(BinaryOp,typename Lhs::Scalar,typename Rhs::Scalar);
129  // require the sizes to match
131  eigen_assert(aLhs.rows() == aRhs.rows() && aLhs.cols() == aRhs.cols());
132  }
133 
134  EIGEN_STRONG_INLINE Index rows() const {
135  // return the fixed size type if available to enable compile time optimizations
136  if (internal::traits<typename internal::remove_all<LhsNested>::type>::RowsAtCompileTime==Dynamic)
137  return m_rhs.rows();
138  else
139  return m_lhs.rows();
140  }
141  EIGEN_STRONG_INLINE Index cols() const {
142  // return the fixed size type if available to enable compile time optimizations
143  if (internal::traits<typename internal::remove_all<LhsNested>::type>::ColsAtCompileTime==Dynamic)
144  return m_rhs.cols();
145  else
146  return m_lhs.cols();
147  }
148 
150  const _LhsNested& lhs() const { return m_lhs; }
152  const _RhsNested& rhs() const { return m_rhs; }
154  const BinaryOp& functor() const { return m_functor; }
155 
156  protected:
157  LhsNested m_lhs;
158  RhsNested m_rhs;
159  const BinaryOp m_functor;
160 };
161 
162 template<typename BinaryOp, typename Lhs, typename Rhs>
163 class CwiseBinaryOpImpl<BinaryOp, Lhs, Rhs, Dense>
164  : public internal::dense_xpr_base<CwiseBinaryOp<BinaryOp, Lhs, Rhs> >::type
165 {
167  public:
168 
171 
172  EIGEN_STRONG_INLINE const Scalar coeff(Index rowId, Index colId) const
173  {
174  return derived().functor()(derived().lhs().coeff(rowId, colId),
175  derived().rhs().coeff(rowId, colId));
176  }
177 
178  template<int LoadMode>
179  EIGEN_STRONG_INLINE PacketScalar packet(Index rowId, Index colId) const
180  {
181  return derived().functor().packetOp(derived().lhs().template packet<LoadMode>(rowId, colId),
182  derived().rhs().template packet<LoadMode>(rowId, colId));
183  }
184 
185  EIGEN_STRONG_INLINE const Scalar coeff(Index index) const
186  {
187  return derived().functor()(derived().lhs().coeff(index),
188  derived().rhs().coeff(index));
189  }
190 
191  template<int LoadMode>
192  EIGEN_STRONG_INLINE PacketScalar packet(Index index) const
193  {
194  return derived().functor().packetOp(derived().lhs().template packet<LoadMode>(index),
195  derived().rhs().template packet<LoadMode>(index));
196  }
197 };
198 
203 template<typename Derived>
204 template<typename OtherDerived>
207 {
208  SelfCwiseBinaryOp<internal::scalar_difference_op<Scalar>, Derived, OtherDerived> tmp(derived());
209  tmp = other.derived();
210  return derived();
211 }
212 
217 template<typename Derived>
218 template<typename OtherDerived>
219 EIGEN_STRONG_INLINE Derived &
221 {
222  SelfCwiseBinaryOp<internal::scalar_sum_op<Scalar>, Derived, OtherDerived> tmp(derived());
223  tmp = other.derived();
224  return derived();
225 }
226 
227 } // end namespace Eigen
228 
229 #endif // EIGEN_CWISE_BINARY_OP_H
#define EIGEN_GENERIC_PUBLIC_INTERFACE(Derived)
EIGEN_STRONG_INLINE Index cols() const
EIGEN_STRONG_INLINE Index rows() const
#define EIGEN_STRONG_INLINE
EIGEN_STRONG_INLINE PacketScalar packet(Index rowId, Index colId) const
CwiseBinaryOpImpl< BinaryOp, Lhs, Rhs, typename internal::promote_storage_type< typename internal::traits< Lhs >::StorageKind, typename internal::traits< Rhs >::StorageKind >::ret >::Base Base
promote_storage_type< typename traits< Lhs >::StorageKind, typename traits< Rhs >::StorageKind >::ret StorageKind
Definition: CwiseBinaryOp.h:60
Derived & operator+=(const MatrixBase< OtherDerived > &other)
Definition: LDLT.h:16
const unsigned int RowMajorBit
Definition: Constants.h:53
const unsigned int PacketAccessBit
Definition: Constants.h:81
const _LhsNested & lhs() const
const unsigned int AlignedBit
Definition: Constants.h:147
Generic expression where a coefficient-wise binary operator is applied to two expressions.
const unsigned int HereditaryBits
Definition: Constants.h:152
const _RhsNested & rhs() const
Derived & operator-=(const MatrixBase< OtherDerived > &other)
#define EIGEN_DENSE_PUBLIC_INTERFACE(Derived)
const int Dynamic
Definition: Constants.h:21
result_of< BinaryOp(typename Lhs::Scalar, typename Rhs::Scalar) >::type Scalar
Definition: CwiseBinaryOp.h:58
EIGEN_STRONG_INLINE const Scalar coeff(Index index) const
#define eigen_assert(x)
const BinaryOp m_functor
Base class for all dense matrices, vectors, and expressions.
Definition: MatrixBase.h:48
EIGEN_STRONG_INLINE PacketScalar packet(Index index) const
const unsigned int LinearAccessBit
Definition: Constants.h:117
internal::dense_xpr_base< CwiseBinaryOp< BinaryOp, Lhs, Rhs > >::type Base
CwiseBinaryOp< BinaryOp, Lhs, Rhs > Derived
#define EIGEN_CHECK_BINARY_COMPATIBILIY(BINOP, LHS, RHS)
Definition: CwiseBinaryOp.h:96
const BinaryOp & functor() const
#define EIGEN_STATIC_ASSERT_SAME_MATRIX_SIZE(TYPE0, TYPE1)
Definition: StaticAssert.h:181
promote_index_type< typename traits< Lhs >::Index, typename traits< Rhs >::Index >::type Index
Definition: CwiseBinaryOp.h:62


tuw_aruco
Author(s): Lukas Pfeifhofer
autogenerated on Mon Feb 28 2022 23:57:51