PairECompare.h

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// -*- c++ -*-
//*****************************************************************************
//*****************************************************************************

#ifndef polybori_groebner_PairECompare_h_
#define polybori_groebner_PairECompare_h_

// include basic definitions
#include "groebner_defs.h"

BEGIN_NAMESPACE_PBORIGB

class PairECompare: 
  public CFactoryBase {
public:
  PairECompare(const BoolePolyRing& ring):
    CFactoryBase(ring) {}

  bool operator() (const PairE& l, const PairE& r){
    if (l.sugar!=r.sugar) return l.sugar>r.sugar; //greater sugar, less importance
    if (l.wlen!=r.wlen) return l.wlen>r.wlen;
    if (l.lm!=r.lm) return parent().ordering().compare(l.lm, r.lm) 
                      == CTypes::greater_than;
    
    return false;
  }
};

END_NAMESPACE_PBORIGB

#endif /* polybori_PairECompare_h_ */

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