1 | // This file is part of Eigen, a lightweight C++ template library
|
---|
2 | // for linear algebra.
|
---|
3 | //
|
---|
4 | // Copyright (C) 2008 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_SPARSEREDUX_H
|
---|
11 | #define EIGEN_SPARSEREDUX_H
|
---|
12 |
|
---|
13 | namespace Eigen {
|
---|
14 |
|
---|
15 | template<typename Derived>
|
---|
16 | typename internal::traits<Derived>::Scalar
|
---|
17 | SparseMatrixBase<Derived>::sum() const
|
---|
18 | {
|
---|
19 | eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix");
|
---|
20 | Scalar res(0);
|
---|
21 | for (Index j=0; j<outerSize(); ++j)
|
---|
22 | for (typename Derived::InnerIterator iter(derived(),j); iter; ++iter)
|
---|
23 | res += iter.value();
|
---|
24 | return res;
|
---|
25 | }
|
---|
26 |
|
---|
27 | template<typename _Scalar, int _Options, typename _Index>
|
---|
28 | typename internal::traits<SparseMatrix<_Scalar,_Options,_Index> >::Scalar
|
---|
29 | SparseMatrix<_Scalar,_Options,_Index>::sum() const
|
---|
30 | {
|
---|
31 | eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix");
|
---|
32 | if(this->isCompressed())
|
---|
33 | return Matrix<Scalar,1,Dynamic>::Map(m_data.valuePtr(), m_data.size()).sum();
|
---|
34 | else
|
---|
35 | return Base::sum();
|
---|
36 | }
|
---|
37 |
|
---|
38 | template<typename _Scalar, int _Options, typename _Index>
|
---|
39 | typename internal::traits<SparseVector<_Scalar,_Options, _Index> >::Scalar
|
---|
40 | SparseVector<_Scalar,_Options,_Index>::sum() const
|
---|
41 | {
|
---|
42 | eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix");
|
---|
43 | return Matrix<Scalar,1,Dynamic>::Map(m_data.valuePtr(), m_data.size()).sum();
|
---|
44 | }
|
---|
45 |
|
---|
46 | } // end namespace Eigen
|
---|
47 |
|
---|
48 | #endif // EIGEN_SPARSEREDUX_H
|
---|