SparseLUImpl.h
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00001 // This file is part of Eigen, a lightweight C++ template library
00002 // for linear algebra.
00003 //
00004 // Copyright (C) 2012 Désiré Nuentsa-Wakam <desire.nuentsa_wakam@inria.fr>
00005 //
00006 // This Source Code Form is subject to the terms of the Mozilla
00007 // Public License v. 2.0. If a copy of the MPL was not distributed
00008 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
00009 #ifndef SPARSELU_IMPL_H
00010 #define SPARSELU_IMPL_H
00011 
00012 namespace Eigen {
00013 namespace internal {
00014   
00019 template <typename Scalar, typename Index>
00020 class SparseLUImpl
00021 {
00022   public:
00023     typedef Matrix<Scalar,Dynamic,1> ScalarVector;
00024     typedef Matrix<Index,Dynamic,1> IndexVector; 
00025     typedef typename ScalarVector::RealScalar RealScalar; 
00026     typedef Ref<Matrix<Scalar,Dynamic,1> > BlockScalarVector;
00027     typedef Ref<Matrix<Index,Dynamic,1> > BlockIndexVector;
00028     typedef LU_GlobalLU_t<IndexVector, ScalarVector> GlobalLU_t; 
00029     typedef SparseMatrix<Scalar,ColMajor,Index> MatrixType; 
00030     
00031   protected:
00032      template <typename VectorType>
00033      Index expand(VectorType& vec, Index& length, Index nbElts, Index keep_prev, Index& num_expansions);
00034      Index memInit(Index m, Index n, Index annz, Index lwork, Index fillratio, Index panel_size,  GlobalLU_t& glu); 
00035      template <typename VectorType>
00036      Index memXpand(VectorType& vec, Index& maxlen, Index nbElts, MemType memtype, Index& num_expansions);
00037      void heap_relax_snode (const Index n, IndexVector& et, const Index relax_columns, IndexVector& descendants, IndexVector& relax_end); 
00038      void relax_snode (const Index n, IndexVector& et, const Index relax_columns, IndexVector& descendants, IndexVector& relax_end); 
00039      Index snode_dfs(const Index jcol, const Index kcol,const MatrixType& mat,  IndexVector& xprune, IndexVector& marker, GlobalLU_t& glu); 
00040      Index snode_bmod (const Index jcol, const Index fsupc, ScalarVector& dense, GlobalLU_t& glu);
00041      Index pivotL(const Index jcol, const RealScalar& diagpivotthresh, IndexVector& perm_r, IndexVector& iperm_c, Index& pivrow, GlobalLU_t& glu);
00042      template <typename Traits>
00043      void dfs_kernel(const Index jj, IndexVector& perm_r,
00044                     Index& nseg, IndexVector& panel_lsub, IndexVector& segrep,
00045                     Ref<IndexVector> repfnz_col, IndexVector& xprune, Ref<IndexVector> marker, IndexVector& parent,
00046                     IndexVector& xplore, GlobalLU_t& glu, Index& nextl_col, Index krow, Traits& traits);
00047      void panel_dfs(const Index m, const Index w, const Index jcol, MatrixType& A, IndexVector& perm_r, Index& nseg, ScalarVector& dense, IndexVector& panel_lsub, IndexVector& segrep, IndexVector& repfnz, IndexVector& xprune, IndexVector& marker, IndexVector& parent, IndexVector& xplore, GlobalLU_t& glu);
00048     
00049      void panel_bmod(const Index m, const Index w, const Index jcol, const Index nseg, ScalarVector& dense, ScalarVector& tempv, IndexVector& segrep, IndexVector& repfnz, GlobalLU_t& glu);
00050      Index column_dfs(const Index m, const Index jcol, IndexVector& perm_r, Index maxsuper, Index& nseg,  BlockIndexVector lsub_col, IndexVector& segrep, BlockIndexVector repfnz, IndexVector& xprune, IndexVector& marker, IndexVector& parent, IndexVector& xplore, GlobalLU_t& glu);
00051      Index column_bmod(const Index jcol, const Index nseg, BlockScalarVector dense, ScalarVector& tempv, BlockIndexVector segrep, BlockIndexVector repfnz, Index fpanelc, GlobalLU_t& glu); 
00052      Index copy_to_ucol(const Index jcol, const Index nseg, IndexVector& segrep, BlockIndexVector repfnz ,IndexVector& perm_r, BlockScalarVector dense, GlobalLU_t& glu); 
00053      void pruneL(const Index jcol, const IndexVector& perm_r, const Index pivrow, const Index nseg, const IndexVector& segrep, BlockIndexVector repfnz, IndexVector& xprune, GlobalLU_t& glu);
00054      void countnz(const Index n, Index& nnzL, Index& nnzU, GlobalLU_t& glu); 
00055      void fixupL(const Index n, const IndexVector& perm_r, GlobalLU_t& glu); 
00056      
00057      template<typename , typename >
00058      friend struct column_dfs_traits;
00059 }; 
00060 
00061 } // end namespace internal
00062 } // namespace Eigen
00063 
00064 #endif


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autogenerated on Thu Jun 6 2019 21:00:00