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Eigen  3.4.0
 
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VectorBlock.h
1// This file is part of Eigen, a lightweight C++ template library
2// for linear algebra.
3//
4// Copyright (C) 2008-2010 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_VECTORBLOCK_H
12#define EIGEN_VECTORBLOCK_H
13
14namespace Eigen {
15
16namespace internal {
17template<typename VectorType, int Size>
18struct traits<VectorBlock<VectorType, Size> >
19 : public traits<Block<VectorType,
20 traits<VectorType>::Flags & RowMajorBit ? 1 : Size,
21 traits<VectorType>::Flags & RowMajorBit ? Size : 1> >
22{
23};
24}
25
56template<typename VectorType, int Size> class VectorBlock
57 : public Block<VectorType,
58 internal::traits<VectorType>::Flags & RowMajorBit ? 1 : Size,
59 internal::traits<VectorType>::Flags & RowMajorBit ? Size : 1>
60{
61 typedef Block<VectorType,
62 internal::traits<VectorType>::Flags & RowMajorBit ? 1 : Size,
63 internal::traits<VectorType>::Flags & RowMajorBit ? Size : 1> Base;
64 enum {
65 IsColVector = !(internal::traits<VectorType>::Flags & RowMajorBit)
66 };
67 public:
68 EIGEN_DENSE_PUBLIC_INTERFACE(VectorBlock)
69
70 using Base::operator=;
71
74 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
75 VectorBlock(VectorType& vector, Index start, Index size)
76 : Base(vector,
77 IsColVector ? start : 0, IsColVector ? 0 : start,
78 IsColVector ? size : 1, IsColVector ? 1 : size)
79 {
80 EIGEN_STATIC_ASSERT_VECTOR_ONLY(VectorBlock);
81 }
82
85 EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
86 VectorBlock(VectorType& vector, Index start)
87 : Base(vector, IsColVector ? start : 0, IsColVector ? 0 : start)
88 {
89 EIGEN_STATIC_ASSERT_VECTOR_ONLY(VectorBlock);
90 }
91};
92
93
94} // end namespace Eigen
95
96#endif // EIGEN_VECTORBLOCK_H
Expression of a fixed-size or dynamic-size block.
Definition: Block.h:105
Expression of a fixed-size or dynamic-size sub-vector.
Definition: VectorBlock.h:60
VectorBlock(VectorType &vector, Index start, Index size)
Definition: VectorBlock.h:75
VectorBlock(VectorType &vector, Index start)
Definition: VectorBlock.h:86
const unsigned int RowMajorBit
Definition: Constants.h:66
Namespace containing all symbols from the Eigen library.
Definition: Core:141
EIGEN_DEFAULT_DENSE_INDEX_TYPE Index
The Index type as used for the API.
Definition: Meta.h:74