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

#ifndef _MP_boolean_hpp_
#define _MP_boolean_hpp_

#include <vector>
using std::vector;

#include "MP_index.hpp"

namespace flopc {
  class SUBSETREF;
  
  class Boolean_base {
    friend class Handle<Boolean_base*>;
    friend class MP_boolean;
  public:
    virtual bool evaluate() const = 0;
  protected:
    Boolean_base() : count(0) {}
    virtual ~Boolean_base() {}
    int count;
  };

  class MP_boolean : public Handle<Boolean_base*> {
  public:
    MP_boolean() : Handle<Boolean_base*>(0) {}
    MP_boolean(bool b);
    MP_boolean(const Constant& c); 
    MP_boolean(SUBSETREF& c); 
    MP_boolean(Boolean_base* r) : Handle<Boolean_base*>(r) {}
  };

  
  MP_boolean operator!(const MP_boolean& b);

  MP_boolean operator&&(const MP_boolean& e1, const MP_boolean& e2);

  MP_boolean operator||(const MP_boolean& e1, const MP_boolean& e2);

//   /** @brief boolean which returns true if all in domain evaluate to true.
//       @ingroup PublicInterface
//       This is used in the normal formation of an expression.
//       @param d MP_domain to evaluate with
//       @param b boolean expression to evaluate.
//       @returns A boolean which evaluates to true all domain evaluations of the boolean
//       evaluate to true.
//   */
//   MP_boolean alltrue(const MP_domain& d, const MP_boolean& b);

  MP_boolean operator<=(const MP_index_exp& e1, const MP_index_exp& e2);

  MP_boolean operator<=(const Constant& e1, const Constant& e2);

  MP_boolean operator<(const MP_index_exp& e1, const MP_index_exp& e2);

  MP_boolean operator<(const Constant& e1, const Constant& e2); 

  MP_boolean operator>=(const MP_index_exp& e1, const MP_index_exp& e2);

  MP_boolean operator>=(const Constant& e1, const Constant& e2);

  MP_boolean operator>(const MP_index_exp& e1, const MP_index_exp& e2);

  MP_boolean operator>(const Constant& e1, const Constant& e2);

  MP_boolean operator==(const MP_index_exp& e1, const MP_index_exp& e2);

  MP_boolean operator==(const Constant& e1, const Constant& e2);

  MP_boolean operator!=(const MP_index_exp& e1, const MP_index_exp& e2);

  MP_boolean operator!=(const Constant& e1, const Constant& e2);

} // End of namespace flopc
#endif

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