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1 // DASSL.h -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1996 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_DASSL_h) |
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25 #define octave_DASSL_h 1 |
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26 |
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27 #if defined (__GNUG__) |
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28 #pragma interface |
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29 #endif |
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30 |
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31 #include "DAE.h" |
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32 |
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33 class DASSL_options |
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34 { |
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35 public: |
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36 |
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37 DASSL_options (void); |
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38 DASSL_options (const DASSL_options& opt); |
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39 |
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40 DASSL_options& operator = (const DASSL_options& opt); |
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41 |
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42 ~DASSL_options (void); |
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43 |
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44 void init (void); |
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45 void copy (const DASSL_options& opt); |
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46 |
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47 void set_default_options (void); |
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48 |
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49 void set_absolute_tolerance (double); |
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50 void set_initial_step_size (double); |
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51 void set_maximum_step_size (double); |
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52 void set_minimum_step_size (double); |
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53 void set_relative_tolerance (double); |
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54 |
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55 double absolute_tolerance (void); |
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56 double initial_step_size (void); |
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57 double maximum_step_size (void); |
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58 double minimum_step_size (void); |
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59 double relative_tolerance (void); |
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60 |
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61 private: |
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62 |
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63 double x_absolute_tolerance; |
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64 double x_initial_step_size; |
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65 double x_maximum_step_size; |
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66 double x_minimum_step_size; |
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67 double x_relative_tolerance; |
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68 }; |
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69 |
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70 class DASSL : public DAE, public DASSL_options |
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71 { |
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72 public: |
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73 |
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74 DASSL (void); |
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75 |
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76 DASSL (const ColumnVector& x, double time, DAEFunc& f); |
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77 |
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78 DASSL (const ColumnVector& x, const ColumnVector& xdot, |
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79 double time, DAEFunc& f); |
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80 |
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81 ~DASSL (void); |
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82 |
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83 void force_restart (void); |
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84 |
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85 void set_stop_time (double t); |
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86 void clear_stop_time (void); |
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87 |
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88 ColumnVector do_integrate (double t); |
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89 |
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90 Matrix do_integrate (const ColumnVector& tout); |
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91 |
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92 Matrix integrate (const ColumnVector& tout, Matrix& xdot_out); |
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93 |
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94 Matrix integrate (const ColumnVector& tout, Matrix& xdot_out, |
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95 const ColumnVector& tcrit); |
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96 |
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97 private: |
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98 |
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99 double stop_time; |
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100 int stop_time_set; |
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101 |
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102 int n; |
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103 int integration_error; |
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104 int restart; |
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105 int liw; |
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106 int lrw; |
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107 int idid; |
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108 int *info; |
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109 int *iwork; |
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110 double *rwork; |
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111 |
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112 friend int ddassl_j (double *time, double *state, double *deriv, |
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113 double *pd, double *cj, double *rpar, int *ipar); |
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114 |
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115 friend int ddassl_f (double *time, double *state, double *deriv, |
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116 double *delta, int *ires, double *rpar, int *ipar); |
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117 |
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118 }; |
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119 |
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120 #endif |
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121 |
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122 /* |
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123 ;;; Local Variables: *** |
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124 ;;; mode: C++ *** |
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125 ;;; page-delimiter: "^/\\*" *** |
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126 ;;; End: *** |
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127 */ |
