49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
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// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef EIGEN_SPARSEREDUX_H
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#define EIGEN_SPARSEREDUX_H
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namespace Eigen {
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template<typename Derived>
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typename internal::traits<Derived>::Scalar
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SparseMatrixBase<Derived>::sum() const
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{
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eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix");
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Scalar res(0);
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for (Index j=0; j<outerSize(); ++j)
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for (typename Derived::InnerIterator iter(derived(),j); iter; ++iter)
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res += iter.value();
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return res;
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}
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template<typename _Scalar, int _Options, typename _Index>
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typename internal::traits<SparseMatrix<_Scalar,_Options,_Index> >::Scalar
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SparseMatrix<_Scalar,_Options,_Index>::sum() const
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{
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eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix");
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if(this->isCompressed())
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return Matrix<Scalar,1,Dynamic>::Map(m_data.valuePtr(), m_data.size()).sum();
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else
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return Base::sum();
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}
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template<typename _Scalar, int _Options, typename _Index>
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typename internal::traits<SparseVector<_Scalar,_Options, _Index> >::Scalar
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SparseVector<_Scalar,_Options,_Index>::sum() const
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{
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eigen_assert(rows()>0 && cols()>0 && "you are using a non initialized matrix");
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return Matrix<Scalar,1,Dynamic>::Map(m_data.valuePtr(), m_data.size()).sum();
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}
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} // end namespace Eigen
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#endif // EIGEN_SPARSEREDUX_H
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