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Eigen
3.3.3
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00001 // This file is part of Eigen, a lightweight C++ template library 00002 // for linear algebra. 00003 // 00004 // Copyright (C) 2008-2014 Gael Guennebaud <gael.guennebaud@inria.fr> 00005 // 00006 // This Source Code Form is subject to the terms of the Mozilla 00007 // Public License v. 2.0. If a copy of the MPL was not distributed 00008 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 00009 00010 #ifndef EIGEN_SPARSEREDUX_H 00011 #define EIGEN_SPARSEREDUX_H 00012 00013 namespace Eigen { 00014 00015 template<typename Derived> 00016 typename internal::traits<Derived>::Scalar 00017 SparseMatrixBase<Derived>::sum() const 00018 { 00019 eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix"); 00020 Scalar res(0); 00021 internal::evaluator<Derived> thisEval(derived()); 00022 for (Index j=0; j<outerSize(); ++j) 00023 for (typename internal::evaluator<Derived>::InnerIterator iter(thisEval,j); iter; ++iter) 00024 res += iter.value(); 00025 return res; 00026 } 00027 00028 template<typename _Scalar, int _Options, typename _Index> 00029 typename internal::traits<SparseMatrix<_Scalar,_Options,_Index> >::Scalar 00030 SparseMatrix<_Scalar,_Options,_Index>::sum() const 00031 { 00032 eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix"); 00033 if(this->isCompressed()) 00034 return Matrix<Scalar,1,Dynamic>::Map(m_data.valuePtr(), m_data.size()).sum(); 00035 else 00036 return Base::sum(); 00037 } 00038 00039 template<typename _Scalar, int _Options, typename _Index> 00040 typename internal::traits<SparseVector<_Scalar,_Options, _Index> >::Scalar 00041 SparseVector<_Scalar,_Options,_Index>::sum() const 00042 { 00043 eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix"); 00044 return Matrix<Scalar,1,Dynamic>::Map(m_data.valuePtr(), m_data.size()).sum(); 00045 } 00046 00047 } // end namespace Eigen 00048 00049 #endif // EIGEN_SPARSEREDUX_H