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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_ODE_h) |
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24 #define octave_ODE_h 1 |
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25 |
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26 #include "ODEFunc.h" |
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27 #include "base-de.h" |
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28 |
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29 class |
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30 ODE : public base_diff_eqn, public ODEFunc |
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31 { |
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32 public: |
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33 |
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34 ODE (void) |
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35 : base_diff_eqn (), ODEFunc () { } |
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36 |
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37 ODE (const ColumnVector& s, double tm, const ODEFunc& f) |
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38 : base_diff_eqn (s, tm), ODEFunc (f) { } |
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39 |
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40 ODE (const ODE& a) |
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41 : base_diff_eqn (a), ODEFunc (a) { } |
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42 |
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43 ODE& operator = (const ODE& a) |
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44 { |
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45 if (this != &a) |
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46 { |
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47 base_diff_eqn::operator = (a); |
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48 ODEFunc::operator = (a); |
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49 } |
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50 return *this; |
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51 } |
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52 |
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53 ~ODE (void) { } |
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54 |
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55 // Derived classes must provide functions to actually do the |
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56 // integration. |
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57 |
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58 // Return the vector of states at output time t. |
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59 virtual ColumnVector do_integrate (double tt) = 0; |
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60 |
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61 // Return a matrix of states at each output time specified by t. |
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62 // The rows of the result matrix should each correspond to a new |
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63 // output time. |
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64 virtual Matrix do_integrate (const ColumnVector& tt) = 0; |
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65 |
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66 virtual Matrix do_integrate (const ColumnVector& tt, |
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67 const ColumnVector& ttcrit) = 0; |
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68 |
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69 // Lots of ways to call the single function and optionally set and |
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70 // get additional information. |
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71 |
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72 // Integrate to t from current point. |
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73 virtual ColumnVector integrate (double tt) |
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74 { return do_integrate (tt); } |
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75 |
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76 // Set new x0, t0 and integrate to t. |
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77 virtual ColumnVector integrate (const ColumnVector& x0, double t0, double tt) |
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78 { |
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79 initialize (x0, t0); |
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80 return do_integrate (tt); |
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81 } |
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82 |
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83 // Integrate from current point and return output at all points |
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84 // specified by t. |
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85 virtual Matrix integrate (const ColumnVector& tt) |
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86 { return do_integrate (tt); } |
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87 |
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88 // Set new x0, t0 and integrate to return output at all points |
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89 // specified by t. |
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90 virtual Matrix integrate (const ColumnVector& x0, double t0, |
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91 const ColumnVector& tt) |
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92 { |
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93 initialize (x0, t0); |
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94 return do_integrate (tt); |
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95 } |
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96 |
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97 // Integrate from current point and return output at all points |
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98 // specified by t. |
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99 virtual Matrix integrate (const ColumnVector& tt, |
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100 const ColumnVector& ttcrit) |
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101 { return do_integrate (tt, ttcrit); } |
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102 |
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103 // Set new x0, t0 and integrate to return output at all points |
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104 // specified by t. |
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105 virtual Matrix integrate (const ColumnVector& x0, double t0, |
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106 const ColumnVector& tt, |
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107 const ColumnVector& ttcrit) |
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108 { |
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109 initialize (x0, t0); |
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110 return do_integrate (tt, ttcrit); |
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111 } |
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112 }; |
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113 |
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114 #endif |
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115 |
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116 /* |
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117 ;;; Local Variables: *** |
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118 ;;; mode: C++ *** |
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119 ;;; End: *** |
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120 */ |
