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annotate liboctave/numeric/base-dae.h @ 33657:6f2baadfdb3d bytecode-interpreter tip

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maint: Merge default to bytecode-interpreter.
author Nicholas R. Jankowski <jankowski.nicholas@gmail.com>
date Tue, 04 Jun 2024 20:06:05 -0400
parents 4b601ca024d5
children
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2002-2024 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_base_dae_h)
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27 #define octave_base_dae_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include "base-de.h"
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32
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33 class base_diff_alg_eqn : public base_diff_eqn
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34 {
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35 public:
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36
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37 base_diff_alg_eqn ()
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38 : base_diff_eqn (), m_xdot () { }
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39
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40 base_diff_alg_eqn (const ColumnVector& xx, double tt)
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41 : base_diff_eqn (xx, tt), m_xdot (xx.numel (), 0.0) { }
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42
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43 base_diff_alg_eqn (const ColumnVector& xx, const ColumnVector& xxdot,
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44 double tt)
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45 : base_diff_eqn (xx, tt), m_xdot (xxdot) { }
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46
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47 base_diff_alg_eqn (const base_diff_alg_eqn& a)
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48 : base_diff_eqn (a), m_xdot (a.m_xdot) { }
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49
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50 virtual ~base_diff_alg_eqn () = default;
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51
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52 base_diff_alg_eqn& operator = (const base_diff_alg_eqn& a)
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53 {
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54 if (this != &a)
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55 {
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56 base_diff_eqn::operator = (a);
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57 m_xdot = a.m_xdot;
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58 }
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59 return *this;
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60 }
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61
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62 void initialize (const ColumnVector& x0, double t0)
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63 {
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64 base_diff_eqn::initialize (x0, t0);
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65 m_xdot = ColumnVector (x0.numel (), 0.0);
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66 }
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67
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68 void initialize (const ColumnVector& x0, const ColumnVector& xdot0,
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69 double t0)
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70 {
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71 base_diff_eqn::initialize (x0, t0);
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72 m_xdot = xdot0;
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73 }
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74
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75 ColumnVector state_derivative () { return m_xdot; }
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76
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77 protected:
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78
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79 ColumnVector m_xdot;
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80 };
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81
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82 #endif