MonomialIdeal() [3/3]

MonomialIdeal::MonomialIdeal	(	const PolynomialRing *	R0,
		VECTOR(Bag *) &	elems,
		stash *	mi_stash0 = nullptr )

Definition at line 140 of file monideal.cpp.

    : R(R0), mi(nullptr), count(0), mi_stash(mi_stash0)
{
  if (mi_stash == nullptr)
    {
      count = 1;
      mi_stash = new stash("mi_node", sizeof(Nmi_node));
    }
 
  // create a vector of <simple degree, index> for each element of 'elems'.
  // sort them in increasing simple degree.
  // then loop through, adding them in.  This will insure that we only add in
  // minimal generators.
 
  std::vector<std::pair<int, int>> degs_and_indices;
  int count = 0;
  for (auto& b : elems)
    {
      int deg = varpower::simple_degree(b->monom().data());
      degs_and_indices.push_back(std::make_pair(deg, count));
      ++count;
    }
  std::stable_sort(degs_and_indices.begin(), degs_and_indices.end());
 
  for (auto p : degs_and_indices)
    {
      Bag* b = elems[p.second];
      Bag* b1; // not used here...
      if (search(b->monom().data(), b1))
        delete b;
      else
        insert_minimal(b);
    }
}

References count, insert_minimal(), mi, mi_stash, int_bag::monom(), p, R, search(), and ExponentList< int, true >::simple_degree().