diff options
author | Gael Guennebaud <g.gael@free.fr> | 2011-11-12 14:11:27 +0100 |
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committer | Gael Guennebaud <g.gael@free.fr> | 2011-11-12 14:11:27 +0100 |
commit | 53fa8517245e0136c83b77526b05ce67de232a56 (patch) | |
tree | 99dd17062c742eabfc3626a04c38fd6f72e43bc4 /Eigen/src/SparseCore/SparseRedux.h | |
parent | dcb66d6b403ed2c4341fdb091f2ef22b73ea8b8a (diff) |
move sparse solvers from unsupported/ to main Eigen/ and remove the "not stable yet" warning
Diffstat (limited to 'Eigen/src/SparseCore/SparseRedux.h')
-rw-r--r-- | Eigen/src/SparseCore/SparseRedux.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Eigen/src/SparseCore/SparseRedux.h b/Eigen/src/SparseCore/SparseRedux.h new file mode 100644 index 000000000..afc49de7a --- /dev/null +++ b/Eigen/src/SparseCore/SparseRedux.h @@ -0,0 +1,56 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr> +// +// Eigen is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 3 of the License, or (at your option) any later version. +// +// Alternatively, you can redistribute it and/or +// modify it under the terms of the GNU General Public License as +// published by the Free Software Foundation; either version 2 of +// the License, or (at your option) any later version. +// +// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY +// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License and a copy of the GNU General Public License along with +// Eigen. If not, see <http://www.gnu.org/licenses/>. + +#ifndef EIGEN_SPARSEREDUX_H +#define EIGEN_SPARSEREDUX_H + +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(); +} + +#endif // EIGEN_SPARSEREDUX_H |