ChainCriterion.h
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// -*- c++ -*-
//*****************************************************************************
//*****************************************************************************
#ifndef polybori_groebner_ChainCriterion_h_
#define polybori_groebner_ChainCriterion_h_
// include basic definitions
#include "groebner_defs.h"
#include "GroebnerStrategy.h"
BEGIN_NAMESPACE_PBORIGB
class ChainCriterion{
public:
const GroebnerStrategy* strat;
int i,j;
ChainCriterion(const GroebnerStrategy& strat, int i, int j){
this->strat=&strat;
this->i=i;
this->j=j;
}
bool operator() (const Exponent& lmExp){
int index=strat->generators.index(lmExp);
//we know such an entry exists
if ((index!=i)&&(index!=j)){
if ((strat->pairs.status.hasTRep(i,index)) && (strat->pairs.status.hasTRep(j,index))){
return true;
}
}
return false;
}
};
END_NAMESPACE_PBORIGB
#endif /* polybori_ChainCriterion_h_ */