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48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
// 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) 2008-2014 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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// IWYU pragma: private
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#include "./InternalHeaderCheck.h"
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namespace Eigen {
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template <typename Derived>
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typename internal::traits<Derived>::Scalar SparseMatrixBase<Derived>::sum() const {
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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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internal::evaluator<Derived> thisEval(derived());
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for (Index j = 0; j < outerSize(); ++j)
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for (typename internal::evaluator<Derived>::InnerIterator iter(thisEval, j); iter; ++iter) 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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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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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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