Qucs-core  0.0.19
trsolver.h
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00001 /*
00002  * trsolver.h - transient solver class definitions
00003  *
00004  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Stefan Jahn <stefan@lkcc.org>
00005  *
00006  * This is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2, or (at your option)
00009  * any later version.
00010  *
00011  * This software is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this package; see the file COPYING.  If not, write to
00018  * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
00019  * Boston, MA 02110-1301, USA.
00020  *
00021  * $Id$
00022  *
00023  */
00024 
00025 #ifndef __TRSOLVER_H__
00026 #define __TRSOLVER_H__
00027 
00028 #include "nasolver.h"
00029 #include "states.h"
00030 
00031 namespace qucs {
00032 
00033 class sweep;
00034 class circuit;
00035 class history;
00036 
00037 class trsolver : public nasolver<nr_double_t>, public states<nr_double_t>
00038 {
00039 public:
00040     ACREATOR (trsolver);
00041     trsolver (const std::string  &name);
00042     trsolver (trsolver &);
00043     ~trsolver ();
00044     int  solve (void);
00045     int  predictor (void);
00046     int  corrector (void);
00047     void nextStates (void);
00048     void fillStates (void);
00049     void setMode (int);
00050     void setDelta (void);
00051     void adjustDelta (nr_double_t);
00052     void adjustOrder (int reduce = 0);
00053     void initTR (void);
00054     void deinitTR (void);
00055     static void calcTR (trsolver *);
00056     void restart (void);
00057     void initDC (void);
00058     static void calcDC (trsolver *);
00059     void initSteps (void);
00060     void saveAllResults (nr_double_t);
00061     nr_double_t checkDelta (void);
00062     void updateCoefficients (nr_double_t);
00063     void initHistory (nr_double_t);
00064     void updateHistory (nr_double_t);
00065     void saveHistory (circuit *);
00066     void predictBashford (void);
00067     void predictEuler (void);
00068     void predictGear (void);
00069     void initCircuitTR (circuit *);
00070     void fillSolution (tvector<nr_double_t> *);
00071     int  dcAnalysis (void);
00072 
00073 protected:
00074     sweep * swp;
00075     nr_double_t predCoeff[8];
00076     nr_double_t corrCoeff[8];
00077     nr_double_t deltas[8];
00078     nr_double_t delta;
00079     nr_double_t deltaMax;
00080     nr_double_t deltaMin;
00081     nr_double_t deltaOld;
00082     nr_double_t stepDelta;
00083     int CMethod;      // user specified corrector method
00084     int PMethod;      // user specified predictor method
00085     int corrMaxOrder; // maximum corrector order
00086     int predMaxOrder; // maximum predictor order
00087     int corrType;     // current corrector method
00088     int predType;     // current predictor method
00089     int corrOrder;    // current corrector order
00090     int predOrder;    // current predictor order
00091     int rejected;
00092     int converged;
00093     tvector<nr_double_t> * solution[8];
00094     nr_double_t current;
00095     int statSteps;
00096     int statRejected;
00097     int statIterations;
00098     int statConvergence;
00099     history * tHistory;
00100     bool relaxTSR;
00101     bool initialDC;
00102 
00103 };
00104 
00105 } // namespace qucs
00106 
00107 #endif /* __TRSOLVER_H__ */