Mercurial > octave
view liboctave/numeric/DAEFunc.h @ 31249:de6fc38c78c6
Make Jacobian types offered by dlsode.f accessible by lsode (bug #31626).
* liboctave/numeric/LSODE-opts.in: Add options "jacobian type", "lower jacobian
subdiagonals", and "upper jacobian subdiagonals".
* liboctave/numeric/LSODE.cc (file scope, lsode_j,
LSODE::do_integrate (double)): Handle new configurable Jacobian types.
* build-aux/mk-opts.pl: Don't implicitly convert to integer in condition.
author | Olaf Till <olaf.till@uni-jena.de> |
---|---|
date | Fri, 12 Nov 2010 08:53:05 +0100 |
parents | 51a3d3a69193 |
children | 597f3ee61a48 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1993-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if ! defined (octave_DAEFunc_h) #define octave_DAEFunc_h 1 #include "octave-config.h" #include "mx-fwd.h" class DAEFunc { public: typedef ColumnVector (*DAERHSFunc) (const ColumnVector& x, const ColumnVector& xdot, double t, octave_idx_type& ires); // This is really the form used by DASSL: // // PD = DG/DY + CJ * DG/DYPRIME typedef Matrix (*DAEJacFunc) (const ColumnVector& x, const ColumnVector& xdot, double t, double cj); DAEFunc (void) : m_fcn (nullptr), m_jac (nullptr), m_reset (true) { } DAEFunc (DAERHSFunc f) : m_fcn (f), m_jac (nullptr), m_reset (true) { } DAEFunc (DAERHSFunc f, DAEJacFunc j) : m_fcn (f), m_jac (j), m_reset (true) { } DAEFunc (const DAEFunc& a) : m_fcn (a.m_fcn), m_jac (a.m_jac), m_reset (a.m_reset) { } DAEFunc& operator = (const DAEFunc& a) { if (this != &a) { m_fcn = a.m_fcn; m_jac = a.m_jac; m_reset = a.m_reset; } return *this; } virtual ~DAEFunc (void) = default; DAERHSFunc function (void) const { return m_fcn; } DAEFunc& set_function (DAERHSFunc f) { m_fcn = f; m_reset = true; return *this; } DAEJacFunc jacobian_function (void) const { return m_jac; } DAEFunc& set_jacobian_function (DAEJacFunc j) { m_jac = j; m_reset = true; return *this; } protected: DAERHSFunc m_fcn; DAEJacFunc m_jac; // This variable is TRUE when this object is constructed, and also // after any internal data has changed. Derived classes may use // this information (and change it) to know when to (re)initialize // their own internal data related to this object. bool m_reset; }; #endif