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       1                 :            : /*
       2                 :            :  * integrator.cpp - integrator class implementation
       3                 :            :  *
       4                 :            :  * Copyright (C) 2004, 2005, 2006 Stefan Jahn <stefan@lkcc.org>
       5                 :            :  *
       6                 :            :  * This is free software; you can redistribute it and/or modify
       7                 :            :  * it under the terms of the GNU General Public License as published by
       8                 :            :  * the Free Software Foundation; either version 2, or (at your option)
       9                 :            :  * any later version.
      10                 :            :  *
      11                 :            :  * This software is distributed in the hope that it will be useful,
      12                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14                 :            :  * GNU General Public License for more details.
      15                 :            :  *
      16                 :            :  * You should have received a copy of the GNU General Public License
      17                 :            :  * along with this package; see the file COPYING.  If not, write to
      18                 :            :  * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
      19                 :            :  * Boston, MA 02110-1301, USA.
      20                 :            :  *
      21                 :            :  * $Id$
      22                 :            :  *
      23                 :            :  */
      24                 :            : 
      25                 :            : #if HAVE_CONFIG_H
      26                 :            : # include <config.h>
      27                 :            : #endif
      28                 :            : 
      29                 :            : #include <stdio.h>
      30                 :            : #include <stdlib.h>
      31                 :            : #include <string.h>
      32                 :            : 
      33                 :            : #include "integrator.h"
      34                 :            : 
      35                 :            : // Some definitions for the save-state variables.
      36                 :            : #define STATE_SHIFT 3
      37                 :            : #define STATE_NUM   8
      38                 :            : #define STATE_MASK  7
      39                 :            : 
      40                 :            : namespace qucs {
      41                 :            : 
      42                 :            : // Constructor creates an unnamed instance of the integrator class.
      43                 :     125988 : integrator::integrator () : states<nr_double_t> () {
      44                 :     125988 :   coefficients = NULL;
      45                 :     125988 :   order = 0;
      46                 :     125988 :   state = 0;
      47                 :     125988 :   integrate_func = NULL;
      48                 :     125988 :   conductor_func = NULL;
      49                 :     125988 : }
      50                 :            : 
      51                 :            : /* The copy constructor creates a new instance based on the given
      52                 :            :    integrator object. */
      53                 :          0 : integrator::integrator (const integrator & c) : states<nr_double_t> (c) {
      54                 :          0 :   coefficients = c.coefficients;
      55                 :          0 :   order = c.order;
      56                 :          0 :   state = c.state;
      57                 :          0 :   integrate_func = c.integrate_func;
      58                 :          0 :   conductor_func = c.conductor_func;
      59                 :          0 : }
      60                 :            : 
      61                 :            : // Destructor deletes a integrator object.
      62                 :     125988 : integrator::~integrator () {
      63                 :     125988 : }
      64                 :            : 
      65                 :            : /* The function evaluates the state of the integration-using component
      66                 :            :    and runs the appropriate integrator function. */
      67                 :    1462316 : void integrator::integrate (int qstate, nr_double_t cap, nr_double_t& geq,
      68                 :            :                             nr_double_t& ceq) {
      69                 :    1462316 :   int cstate = qstate + 1;
      70         [ +  + ]:    1462316 :   if (state & MODE_INIT) fillState (qstate, getState (qstate));
      71                 :    1462316 :   (*integrate_func) (this, qstate, cap, geq, ceq);
      72         [ +  + ]:    1462316 :   if (state & MODE_INIT) fillState (cstate, getState (cstate));
      73                 :    1462316 : }
      74                 :            : 
      75                 :            : /* This function runs the appropriate conductor function. */
      76                 :      72850 : void integrator::conductor (nr_double_t cap, nr_double_t& geq) {
      77                 :      72850 :   (*conductor_func) (this, cap, geq);
      78                 :      72850 : }
      79                 :            : 
      80                 :            : } // namespace qucs