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// 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
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