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Diffstat (limited to 'extern/Eigen3/Eigen/src/SparseCore/SparseRedux.h')
-rw-r--r-- | extern/Eigen3/Eigen/src/SparseCore/SparseRedux.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/extern/Eigen3/Eigen/src/SparseCore/SparseRedux.h b/extern/Eigen3/Eigen/src/SparseCore/SparseRedux.h new file mode 100644 index 00000000000..f3da93a71d4 --- /dev/null +++ b/extern/Eigen3/Eigen/src/SparseCore/SparseRedux.h @@ -0,0 +1,45 @@ +// 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 |