| // This file is part of Eigen, a lightweight C++ template library |
| // for linear algebra. |
| // |
| // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr> |
| // |
| // This Source Code Form is subject to the terms of the Mozilla |
| // Public License v. 2.0. If a copy of the MPL was not distributed |
| // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| |
| #ifndef EIGEN_SPARSEREDUX_H |
| #define EIGEN_SPARSEREDUX_H |
| |
| namespace Eigen { |
| |
| template<typename Derived> |
| typename internal::traits<Derived>::Scalar |
| SparseMatrixBase<Derived>::sum() const |
| { |
| eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix"); |
| Scalar res(0); |
| for (Index 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 _Index> |
| typename internal::traits<SparseMatrix<_Scalar,_Options,_Index> >::Scalar |
| SparseMatrix<_Scalar,_Options,_Index>::sum() const |
| { |
| eigen_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 _Index> |
| typename internal::traits<SparseVector<_Scalar,_Options, _Index> >::Scalar |
| SparseVector<_Scalar,_Options,_Index>::sum() const |
| { |
| eigen_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(); |
| } |
| |
| } // end namespace Eigen |
| |
| #endif // EIGEN_SPARSEREDUX_H |
