ODESFunc.h

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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
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// This file is part of Octave.
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////////////////////////////////////////////////////////////////////////
 
#if ! defined (octave_ODESFunc_h)
#define octave_ODESFunc_h 1
 
#include "octave-config.h"
 
#include "dMatrix.h"
 
class ColumnVector;
 
class
ODESFunc
{
public:
 
  struct DAEJac
  {
    Matrix *dfdxdot;
    Matrix *dfdx;
  };
 
  typedef ColumnVector (*ODES_fsub) (const ColumnVector& x, double,
                                     const ColumnVector& theta);
 
  typedef ColumnVector (*ODES_bsub) (const ColumnVector& x, double,
                                     const ColumnVector& theta, int column);
 
  typedef Matrix (*ODES_jsub) (const ColumnVector& x, double,
                               const ColumnVector& theta);
 
  ODESFunc (void)
    : fsub (nullptr), bsub (nullptr), jsub (nullptr) { }
 
  ODESFunc (ODES_fsub f)
    : fsub (f), bsub (nullptr), jsub (nullptr) { }
 
  ODESFunc (ODES_fsub f, ODES_bsub b)
    : fsub (f), bsub (b), jsub (nullptr) { }
 
  ODESFunc (ODES_fsub f, ODES_bsub b, ODES_jsub j)
    : fsub (f), bsub (b), jsub (j) { }
 
  ODESFunc (const ODESFunc& a)
    : fsub (a.fsub), bsub (a.bsub), jsub (a.jsub) { }
 
  ODESFunc& operator = (const ODESFunc& a)
  {
    if (this != &a)
      {
        fsub = a.fsub;
        bsub = a.bsub;
        jsub = a.jsub;
      }
    return *this;
  }
 
  virtual ~ODESFunc (void) = default;
 
  ODES_fsub fsub_function (void) const { return fsub; }
 
  ODESFunc& set_fsub_function (ODES_fsub f)
  {
    fsub = f;
    return *this;
  }
 
  ODES_bsub bsub_function (void) const { return bsub; }
 
  ODESFunc& set_bsub_function (ODES_bsub b)
  {
    bsub = b;
    return *this;
  }
 
  ODES_jsub jsub_function (void) const { return jsub; }
 
  ODESFunc& set_jsub_function (ODES_jsub j)
  {
    jsub = j;
    return *this;
  }
 
protected:
 
  ODES_fsub fsub;
  ODES_bsub bsub;
  ODES_jsub jsub;
};
 
#endif