EvaluationPolicy.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2005 by Willem van Straten
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
// psrchive/More/MEAL/MEAL/EvaluationPolicy.h
 
#ifndef __MEAL_EvaluationPolicy_H
#define __MEAL_EvaluationPolicy_H
 
#include "MEAL/FunctionPolicy.h"
#include <vector>
 
namespace MEAL {
 
  template<class Result>
  class EvaluationPolicy : public FunctionPolicy {
 
  public:
 
    EvaluationPolicy (Function* context) : FunctionPolicy (context) { }
 
    virtual Result evaluate (std::vector<Result>* grad=0) const = 0;
 
  };
 
  template<typename T>
  static EvaluationPolicy<typename T::Result>* default_evaluation_policy (T*);
 
}
 
#include "MEAL/Cached.h"
#include "MEAL/NotCached.h"
 
template<typename T>
MEAL::EvaluationPolicy<typename T::Result>*
MEAL::default_evaluation_policy (T* thiz)
{
  if (Function::cache_results)
    return new Cached<T> (thiz);
  else
    return new NotCached<T> (thiz);
}
 
#endif