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1 /* |
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2 |
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3 Copyright (C) 2002 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_base_dae_h) |
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25 #define octave_base_dae_h 1 |
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26 |
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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 base_diff_alg_eqn : public base_diff_eqn |
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31 { |
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32 public: |
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33 |
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34 base_diff_alg_eqn (void) |
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35 : base_diff_eqn (), xdot () { } |
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36 |
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37 base_diff_alg_eqn (const ColumnVector& xx, double tt) |
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38 : base_diff_eqn (xx, tt), xdot (xx.length (), 0.0) { } |
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39 |
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40 base_diff_alg_eqn (const ColumnVector& xx, const ColumnVector& xxdot, |
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41 double tt) |
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42 : base_diff_eqn (xx, tt), xdot (xxdot) { } |
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43 |
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44 base_diff_alg_eqn (const base_diff_alg_eqn& a) |
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45 : base_diff_eqn (a), xdot (a.xdot) { } |
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46 |
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47 virtual ~base_diff_alg_eqn (void) { } |
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48 |
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49 base_diff_alg_eqn& operator = (const base_diff_alg_eqn& a) |
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50 { |
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51 if (this != &a) |
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52 { |
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53 base_diff_eqn::operator = (a); |
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54 xdot = a.xdot; |
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55 } |
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56 return *this; |
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57 } |
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58 |
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59 void initialize (const ColumnVector& x0, double t0) |
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60 { |
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61 base_diff_eqn::initialize (x0, t0); |
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62 xdot = ColumnVector (x0.length (), 0.0); |
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63 } |
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64 |
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65 void initialize (const ColumnVector& x0, const ColumnVector& xdot0, |
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66 double t0) |
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67 { |
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68 base_diff_eqn::initialize (x0, t0); |
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69 xdot = xdot0; |
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70 } |
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71 |
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72 ColumnVector state_derivative (void) { return xdot; } |
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73 |
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74 protected: |
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75 |
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76 ColumnVector xdot; |
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77 }; |
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78 |
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79 #endif |
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80 |
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81 /* |
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82 ;;; Local Variables: *** |
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83 ;;; mode: C++ *** |
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84 ;;; End: *** |
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85 */ |
