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// ******************** FlopCpp **********************************************
// File: MP_constant.hpp
// $Id$
// Author: Tim Helge Hultberg (thh@mat.ua.pt)
// Copyright (C) 2003 Tim Helge Hultberg
// All Rights Reserved.
// ****************************************************************************

#ifndef _MP_constant_hpp_
#define _MP_constant_hpp_

#include "MP_utilities.hpp"

namespace flopc {
  class Constant_base {
    friend class Constant;
    friend class Handle<Constant_base*>;
  public:
    virtual double evaluate() const = 0;
    virtual int getStage() const {
      return 0;
    }
    virtual int stage() const {
      return 0;
    }
  protected:
    Constant_base() : count(0) {}
    virtual ~Constant_base() {}
    int count;

  };
    
  class MP_index_exp;
  class DataRef;
  class MP_domain;

  class Constant : public Handle<Constant_base*> {
  public:
    Constant(const MP_index_exp& i);
    Constant(const DataRef& d);
    Constant(double d);
    Constant(int d);
    // operator-();
    //   private:
    Constant(Constant_base* r) : Handle<Constant_base*>(r) {}
  };

  Constant operator-(const Constant& a);

  Constant abs(const Constant& c);
  Constant pos(const Constant& c);
  Constant ceil(const Constant& c);
  Constant floor(const Constant& c);
  Constant minimum(const Constant& a, const Constant& b);
  Constant maximum(const Constant& a, const Constant& b);
  Constant operator+(const Constant& a, const Constant& b);
  Constant operator-(const Constant& a, const Constant& b);
  Constant operator*(const Constant& a, const Constant& b);
  Constant operator/(const Constant& a, const Constant& b);

  class MP_boolean;
  Constant mpif(const MP_boolean& c, const Constant& a, const Constant& b);

  Constant maximum(const MP_domain& i, const Constant& e);
  Constant minimum(const MP_domain& i, const Constant& e);
  Constant sum(const MP_domain& i, const Constant& e);
  Constant product(const MP_domain& i, const Constant& e);
}  // End of namespace flopc
#endif

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