CwiseUnaryView.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) 2009-2010 Gael Guennebaud <gael.guennebaud@inria.fr>
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_CWISE_UNARY_VIEW_H
11 #define EIGEN_CWISE_UNARY_VIEW_H
12 
13 namespace Eigen {
14 
15 namespace internal {
16 template<typename ViewOp, typename MatrixType>
17 struct traits<CwiseUnaryView<ViewOp, MatrixType> >
18  : traits<MatrixType>
19 {
20  typedef typename result_of<
21  ViewOp(const typename traits<MatrixType>::Scalar&)
23  typedef typename MatrixType::Nested MatrixTypeNested;
25  enum {
26  FlagsLvalueBit = is_lvalue<MatrixType>::value ? LvalueBit : 0,
27  Flags = traits<_MatrixTypeNested>::Flags & (RowMajorBit | FlagsLvalueBit | DirectAccessBit), // FIXME DirectAccessBit should not be handled by expressions
29  // need to cast the sizeof's from size_t to int explicitly, otherwise:
30  // "error: no integral type can represent all of the enumerator values
31  InnerStrideAtCompileTime = MatrixTypeInnerStride == Dynamic
32  ? int(Dynamic)
33  : int(MatrixTypeInnerStride) * int(sizeof(typename traits<MatrixType>::Scalar) / sizeof(Scalar)),
35  ? int(Dynamic)
36  : outer_stride_at_compile_time<MatrixType>::ret * int(sizeof(typename traits<MatrixType>::Scalar) / sizeof(Scalar))
37  };
38 };
39 }
40 
41 template<typename ViewOp, typename MatrixType, typename StorageKind>
43 
57 template<typename ViewOp, typename MatrixType>
58 class CwiseUnaryView : public CwiseUnaryViewImpl<ViewOp, MatrixType, typename internal::traits<MatrixType>::StorageKind>
59 {
60  public:
61 
64  typedef typename internal::ref_selector<MatrixType>::non_const_type MatrixTypeNested;
65  typedef typename internal::remove_all<MatrixType>::type NestedExpression;
66 
67  explicit inline CwiseUnaryView(MatrixType& mat, const ViewOp& func = ViewOp())
68  : m_matrix(mat), m_functor(func) {}
69 
71 
72  EIGEN_STRONG_INLINE Index rows() const { return m_matrix.rows(); }
73  EIGEN_STRONG_INLINE Index cols() const { return m_matrix.cols(); }
74 
76  const ViewOp& functor() const { return m_functor; }
77 
80  nestedExpression() const { return m_matrix; }
81 
84  nestedExpression() { return m_matrix.const_cast_derived(); }
85 
86  protected:
87  MatrixTypeNested m_matrix;
88  ViewOp m_functor;
89 };
90 
91 // Generic API dispatcher
92 template<typename ViewOp, typename XprType, typename StorageKind>
94  : public internal::generic_xpr_base<CwiseUnaryView<ViewOp, XprType> >::type
95 {
96 public:
98 };
99 
100 template<typename ViewOp, typename MatrixType>
102  : public internal::dense_xpr_base< CwiseUnaryView<ViewOp, MatrixType> >::type
103 {
104  public:
105 
108 
111 
112  EIGEN_DEVICE_FUNC inline Scalar* data() { return &(this->coeffRef(0)); }
113  EIGEN_DEVICE_FUNC inline const Scalar* data() const { return &(this->coeff(0)); }
114 
115  EIGEN_DEVICE_FUNC inline Index innerStride() const
116  {
117  return derived().nestedExpression().innerStride() * sizeof(typename internal::traits<MatrixType>::Scalar) / sizeof(Scalar);
118  }
119 
120  EIGEN_DEVICE_FUNC inline Index outerStride() const
121  {
122  return derived().nestedExpression().outerStride() * sizeof(typename internal::traits<MatrixType>::Scalar) / sizeof(Scalar);
123  }
124 };
125 
126 } // end namespace Eigen
127 
128 #endif // EIGEN_CWISE_UNARY_VIEW_H
#define EIGEN_GENERIC_PUBLIC_INTERFACE(Derived)
Definition: Macros.h:852
#define EIGEN_STRONG_INLINE
Definition: Macros.h:494
result_of< ViewOp(const typename traits< MatrixType >::Scalar &) >::type Scalar
return int(ret)+1
EIGEN_STRONG_INLINE Index cols() const
CwiseUnaryView< ViewOp, MatrixType > Derived
internal::generic_xpr_base< CwiseUnaryView< ViewOp, XprType > >::type Base
const unsigned int DirectAccessBit
Definition: Constants.h:150
const unsigned int LvalueBit
Definition: Constants.h:139
EIGEN_DEVICE_FUNC const Scalar * data() const
Namespace containing all symbols from the Eigen library.
Definition: jet.h:637
const ViewOp & functor() const
MatrixXf MatrixType
const unsigned int RowMajorBit
Definition: Constants.h:61
Generic lvalue expression of a coefficient-wise unary operator of a matrix or a vector.
internal::remove_reference< MatrixTypeNested >::type & nestedExpression()
EIGEN_DEFAULT_DENSE_INDEX_TYPE Index
The Index type as used for the API.
Definition: Meta.h:33
int data[]
#define EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Derived)
Definition: Macros.h:842
DenseIndex ret
Definition: level1_impl.h:59
#define EIGEN_DENSE_PUBLIC_INTERFACE(Derived)
Definition: Macros.h:870
MatrixTypeNested m_matrix
const int Dynamic
Definition: Constants.h:21
const internal::remove_all< MatrixTypeNested >::type & nestedExpression() const
CwiseUnaryViewImpl< ViewOp, MatrixType, typename internal::traits< MatrixType >::StorageKind >::Base Base
internal::dense_xpr_base< CwiseUnaryView< ViewOp, MatrixType > >::type Base
Definition: pytypes.h:897


gtsam
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autogenerated on Sat May 8 2021 02:41:55