AMPLNonlinearFunction.h

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// 
//     Minotaur -- It's only 1/2 bull
// 
//     (C)opyright 2008 - 2025 The Minotaur Team.
// 
 
#ifndef MINOTAURAMPLNONLINEARFUNCTION_H
#define MINOTAURAMPLNONLINEARFUNCTION_H
 
#include "asl.h"
 
#include "NonlinearFunction.h"
 
namespace MINOTAUR_AMPL {
 
class AMPLNonlinearFunction : public Minotaur::NonlinearFunction {
public:
 
  AMPLNonlinearFunction ();
 
  AMPLNonlinearFunction (Minotaur::UInt i, Minotaur::UInt nvars, ASL* my_asl,
                     bool is_in_obj);
 
  // Not available.
  Minotaur::NonlinearFunctionPtr 
    cloneWithVars(Minotaur::VariableConstIterator vbeg, 
                  int *err) const;
 
  // Evaluate at a point. Base class function.
  double eval(const double *x, int *error);
 
  // Evaluate gradient at a point. Base class function.
  void evalGradient(const double *x, double *grad_f,
                    int *error);
 
  void evalHessian(const double mult, const double *x, 
                   const Minotaur::LTHessStor *stor, double *values, 
                   int *error);
 
  // Not available.
  void  fillHessStor(Minotaur::LTHessStor *);
 
  // Not available.
  void  finalHessStor(const Minotaur::LTHessStor *);
 
  // Not available.
  void fillJac(const double *, double *, int *);
 
  // Get variables used in this function. Base class method.
  void getVars(Minotaur::VariableSet *);
 
  // Multiply by a constant. Base class method.
  void multiply(double c);
 
  // Not available.
  void prepJac(Minotaur::VarSetConstIter, Minotaur::VarSetConstIter);
 
  void setVars(Minotaur::VarSetConstIterator vb, 
               Minotaur::VarSetConstIterator ve);
 
  // Display the function. Base class method.
  void write(std::ostream &out) const;
 
private:
  Minotaur::UInt nVars_; 
 
  Minotaur::UInt amplIndex_; 
 
  // pointer to ampl's asl.
  ASL *myAsl_;
 
  bool neg_;              
 
  bool isInObj_;
}; // AMPLNonlinearFunction
 
typedef AMPLNonlinearFunction* AMPLNlfPtr;
}  // namespace
 
#endif