00001 // This file is part of ff3d - http://www.freefem.org/ff3d 00002 // Copyright (C) 2001, 2002, 2003 Stéphane Del Pino 00003 00004 // This program is free software; you can redistribute it and/or modify 00005 // it under the terms of the GNU General Public License as published by 00006 // the Free Software Foundation; either version 2, or (at your option) 00007 // any later version. 00008 00009 // This program is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 // GNU General Public License for more details. 00013 00014 // You should have received a copy of the GNU General Public License 00015 // along with this program; if not, write to the Free Software Foundation, 00016 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 00018 // $Id: SpectralFEMPreconditioner.hpp,v 1.3 2008/02/24 20:45:33 delpinux Exp $ 00019 00020 #ifndef SPECTRAL_FEM_PRECONDITIONER 00021 #define SPECTRAL_FEM_PRECONDITIONER 00022 00023 #include <Preconditioner.hpp> 00024 00033 class SpectralFEMPreconditioner 00034 : public Preconditioner 00035 { 00036 private: 00037 class Internal; 00038 00039 ReferenceCounting<Internal> 00040 __internal; 00042 public: 00044 void initializes(); 00045 00047 void computes(const Vector<real_t>& r , 00048 Vector<real_t>& z) const; 00049 00051 void computesTransposed(const Vector<real_t>& r , 00052 Vector<real_t>& z) const; 00053 00059 std::string name() const 00060 { 00061 return "Finite element preconditioner for spectral method"; 00062 } 00063 00069 SpectralFEMPreconditioner(const Problem& problem); 00070 00075 ~SpectralFEMPreconditioner(); 00076 }; 00077 00078 #endif // SPECTRAL_FEM_PRECONDITIONER
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