ROL_StdObjective.hpp

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// @HEADER
// *****************************************************************************
//               Rapid Optimization Library (ROL) Package
//
// Copyright 2014 NTESS and the ROL contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER
 
#ifndef ROL_STDOBJECTIVE_H
#define ROL_STDOBJECTIVE_H
 
#include "ROL_Objective.hpp"
#include "ROL_StdVector.hpp"
 
namespace ROL {
 
template<typename Real>
class StdObjective : public virtual Objective<Real> {
public:
  virtual void update( const std::vector<Real> &x, bool flag = true, int iter = -1 ) {}
 
  using Objective<Real>::update;
  void update( const Vector<Real> &x, bool flag = true, int iter = -1 ) override;
 
  virtual void update( const std::vector<Real> &x, UpdateType type, int iter = -1 ) {}
 
  void update( const Vector<Real> &x, UpdateType type, int iter = -1 ) override;
 
  virtual Real value( const std::vector<Real> &x, Real &tol ) = 0;
 
  using Objective<Real>::value;
  Real value( const Vector<Real> &x, Real &tol ) override;
 
  virtual void gradient( std::vector<Real> &g, const std::vector<Real> &x, Real &tol );
 
  using Objective<Real>::gradient;
  void gradient( Vector<Real> &g, const Vector<Real> &x, Real &tol ) override;
 
  virtual Real dirDeriv( const std::vector<Real> &x, const std::vector<Real> &d, Real &tol );
 
  using Objective<Real>::dirDeriv;
  Real dirDeriv( const Vector<Real> &x, const Vector<Real> &d, Real &tol ) override;
 
  virtual void hessVec( std::vector<Real> &hv, const std::vector<Real> &v, const std::vector<Real> &x, Real &tol );
 
  using Objective<Real>::hessVec;
  void hessVec( Vector<Real> &hv, const Vector<Real> &v, const Vector<Real> &x, Real &tol ) override;
 
  virtual void invHessVec( std::vector<Real> &hv, const std::vector<Real> &v, const std::vector<Real> &x, Real &tol );
 
  using Objective<Real>::invHessVec;
  void invHessVec( Vector<Real> &hv, const Vector<Real> &v, const Vector<Real> &x, Real &tol ) override;
 
  virtual void precond( std::vector<Real> &Pv, const std::vector<Real> &v, const std::vector<Real> &x, Real &tol );
 
  using Objective<Real>::precond;
  void precond( Vector<Real> &Pv, const Vector<Real> &v, const Vector<Real> &x, Real &tol ) override;
 
private:
  Real sgn(Real x) const;
 
};
 
} // namespace ROL
 
#include "ROL_StdObjective_Def.hpp"
 
#endif