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// Copyright 2005, Michael E. Stillman
#ifndef _marked_gb_
#define _marked_gb_
#include "reducedgb.hpp"
// Marked GB's: for now, they must be defined over a polynomial ring
// with no quotient elements, and the base must be field.
// AND the monomial order needs to be a term order.
//
// Sorting is NOT done
/**
@ingroup reducedgb
@brief Computation of a reduced GB w.r.t. a marked ordering.
*/
class MarkedGB : public ReducedGB
{
friend ReducedGB *ReducedGB::create(const PolynomialRing *originalR0,
const FreeModule *F0,
const FreeModule *Fsyz0,
const GBWeight *wt0);
protected:
MonomialTable *T;
gbvector **leadterms; // these point into the corresponding terms for 'polys'
MarkedGB(const PolynomialRing *originalR0,
const FreeModule *F0,
const FreeModule *Fsyz0);
void auto_reduce();
public:
static MarkedGB *create(const PolynomialRing *originalR0,
const FreeModule *F0,
const FreeModule *Fsyz0);
virtual ~MarkedGB();
virtual void remove_gb() {}
const FreeModule *get_ambient_FreeModule() const { return F; }
const GBRing *get_gb_ring() const { return R; }
virtual void set_gb(VECTOR(POLY) & polys0);
virtual void add_marked_elems(const VECTOR(gbvector *) & leadterms,
const VECTOR(POLY) & polys0,
bool auto_reduced);
void marked_remainder(POLY &f,
bool use_denom,
ring_elem &denom,
gbvector *marked_lead_term);
// Do not reduce the marked_lead_term. The coefficient of this term might be
// modified.
// But it will still point to the same gbvector node.
virtual void remainder(POLY &f, bool use_denom, ring_elem &denom);
virtual void remainder(gbvector *&f, bool use_denom, ring_elem &denom);
void geo_remainder(gbvector *&f, bool use_denom, ring_elem &denom);
virtual const Matrix /* or null */ *get_initial(int nparts);
virtual const Matrix /* or null */ *get_parallel_lead_terms(M2_arrayint w);
};
#endif
// Local Variables:
// compile-command: "make -C $M2BUILDDIR/Macaulay2/e "
// indent-tabs-mode: nil
// End:
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