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#ifndef ADD_MODEL_H_
#define ADD_MODEL_H_
#define OPT_HEADER
#include <core/fitter.hpp>
#include <cmath>

namespace opt_utilities
{
  template <typename Ty,typename Tx,typename Tp,typename Tstr>
  class add_model
    :public model<Ty,Tx,Tp,Tstr>
  {
  private:
    model<Ty,Tx,Tp,Tstr>* do_clone()const
    {
      return new add_model<Ty,Tx,Tp,Tstr>(*this);
    }
  private:
    add_model()
    {
    }

  private:
    model<Ty,Tx,Tp,Tstr>* pm1;
    model<Ty,Tx,Tp,Tstr>* pm2;

  public:
    add_model(const model<Ty,Tx,Tp,Tstr>& m1,
	      const model<Ty,Tx,Tp,Tstr>& m2)
      :pm1(m1.clone()),pm2(m2.clone())
    {
      int np1=m1.get_num_params();
      int np2=m2.get_num_params();
      for(int i=0;i<np1;++i)
	{
	  param_info<Tp,Tstr> p(m1.get_param_info(i));
	  param_info<Tp,Tstr> p1(p.get_name()+"1",p.get_value());
	  this->push_param_info(p1);
	}
      for(int i=0;i<np2;++i)
	{
	  param_info<Tp,Tstr> p(m2.get_param_info(i));
	  param_info<Tp,Tstr> p2(p.get_name()+"2",p.get_value());
	  this->push_param_info(p2);
	}
    }

    add_model(const add_model& rhs)
      :pm1(NULL),pm2(NULL)
    {
      int np1(0),np2(0);
      if(rhs.pm1)
	{
	  pm1=rhs.pm1->clone();
	  np1=rhs.pm1->get_num_params();
	  for(int i=0;i<np1;++i)
	    {
	      param_info<Tp,Tstr> p(rhs.pm1->get_param_info(i));
	      param_info<Tp,Tstr> p1(p.get_name()+"1",p.get_value());
	      this->push_param_info(p1);
	    }
	}
      if(rhs.pm2)
	{
	  pm2=rhs.pm2->clone();
	  np2=rhs.pm2->get_num_params();
	  for(int i=0;i<np2;++i)
	    {
	      param_info<Tp,Tstr> p(rhs.pm2->get_param_info(i));
	      param_info<Tp,Tstr> p2(p.get_name()+"2",p.get_value());
	      this->push_param_info(p2);
	    }
	}
    }

    add_model& operator=(const add_model& rhs)
    {
      if(this==&rhs)
	{
	  return *this;
	}
      if(!pm1)
	{
	  //delete pm1;
	  pm1->destroy();
	}
      if(!pm2)
	{
	  //delete pm2;
	  pm2->destroy();
	}
      int np1(0),np2(0);
      if(rhs.pm1)
	{
	  pm1=rhs.pm1->clone();
	  np1=rhs.pm1->get_num_params();
	  for(int i=0;i<np1;++i)
	    {
	      param_info<Tp,Tstr> p(rhs.pm1->get_param_info(i));
	      param_info<Tp,Tstr> p1(p.get_name()+"1",p.get_value());
	      this->push_param_info(p1);
	    }
	}
      if(rhs.pm2)
	{
	  pm2=rhs.pm2->clone();
	  np2=rhs.pm2->get_num_params();
	  for(int i=0;i<np2;++i)
	    {
	      param_info<Tp,Tstr> p(rhs.pm2->get_param_info(i));
	      param_info<Tp,Tstr> p2(p.get_name()+"2",p.get_value());
	      this->push_param_info(p2);
	    }
	}
      return *this;
    }

    ~add_model()
    {
      if(!pm1)
	{
	  //delete pm1;
	  pm1->destroy();
	}
      if(!pm2)
	{
	  //delete pm2;
	  pm2->destroy();
	}
    }

  public:
    const char* do_get_type_name()const
    {
      return "add model";
    }

  public:
    Ty do_eval(const Tx& x,const Tp& param)
    {
      if(!pm1)
	{
	  throw opt_exception("incomplete model!");
	}
      if(!pm2)
	{
	  throw opt_exception("incomplete model!");
	}
      Tp p1(pm1->get_num_params());
      Tp p2(pm2->get_num_params());
      int i=0;
      int j=0;
      for(i=0;i<pm1->get_num_params();++i,++j)
	{
	  set_element(p1,i,get_element(param,j));
	}
      for(i=0;i<pm2->get_num_params();++i,++j)
	{
	  set_element(p2,i,get_element(param,j));
	}
      return pm1->eval(x,p1)+pm2->eval(x,p2);
    }
  };
  
  template <typename Ty,typename Tx,typename Tp,typename Tstr>
  add_model<Ty,Tx,Tp,Tstr> operator+(const model<Ty,Tx,Tp,Tstr>& m1,
				     const model<Ty,Tx,Tp,Tstr>& m2)
  {
    return add_model<Ty,Tx,Tp,Tstr>(m1,m2);
  }
}



#endif
//EOF