| // This file is part of Eigen, a lightweight C++ template library | |
| // for linear algebra. | |
| // | |
| // Copyright (C) 2008 Gael Guennebaud <g.gael@free.fr> | |
| // | |
| // Eigen is free software; you can redistribute it and/or | |
| // modify it under the terms of the GNU Lesser General Public | |
| // License as published by the Free Software Foundation; either | |
| // version 3 of the License, or (at your option) any later version. | |
| // | |
| // Alternatively, you can redistribute it and/or | |
| // modify it under the terms of the GNU General Public License as | |
| // published by the Free Software Foundation; either version 2 of | |
| // the License, or (at your option) any later version. | |
| // | |
| // Eigen is distributed in the hope that it will be useful, but WITHOUT ANY | |
| // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
| // FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the | |
| // GNU General Public License for more details. | |
| // | |
| // You should have received a copy of the GNU Lesser General Public | |
| // License and a copy of the GNU General Public License along with | |
| // Eigen. If not, see <http://www.gnu.org/licenses/>. | |
| #ifndef EIGEN_SPARSEREDUX_H | |
| #define EIGEN_SPARSEREDUX_H | |
| template<typename Derived> | |
| typename ei_traits<Derived>::Scalar | |
| SparseMatrixBase<Derived>::sum() const | |
| { | |
| ei_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix"); | |
| Scalar res = 0; | |
| for (int j=0; j<outerSize(); ++j) | |
| for (typename Derived::InnerIterator iter(derived(),j); iter; ++iter) | |
| res += iter.value(); | |
| return res; | |
| } | |
| template<typename _Scalar, int _Options> | |
| typename ei_traits<SparseMatrix<_Scalar,_Options> >::Scalar | |
| SparseMatrix<_Scalar,_Options>::sum() const | |
| { | |
| ei_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix"); | |
| return Matrix<Scalar,1,Dynamic>::Map(m_data.value(0), m_data.size()).sum(); | |
| } | |
| template<typename _Scalar, int _Options> | |
| typename ei_traits<SparseVector<_Scalar,_Options> >::Scalar | |
| SparseVector<_Scalar,_Options>::sum() const | |
| { | |
| ei_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix"); | |
| return Matrix<Scalar,1,Dynamic>::Map(m_data.value(0), m_data.size()).sum(); | |
| } | |
| #endif // EIGEN_SPARSEREDUX_H |