divide_by_var()

Matrix * Matrix::divide_by_var	(	int	n,
		int	maxd,
		int &	maxdivided ) const

Definition at line 1062 of file matrix.cpp.

{
  const PolynomialRing *P = get_ring()->cast_to_PolynomialRing();
  if (P == nullptr)
    {
      ERROR("expected polynomial ring");
      return nullptr;
    }
  MatrixConstructor mat(rows(), 0);
  maxdivided = 0;
  for (int i = 0; i < n_cols(); i++)
    {
      if (elem(i) != nullptr)
        {
          int lo, hi;
          P->vec_degree_of_var(n, elem(i), lo, hi);
          if (maxd >= 0 && lo > maxd) lo = maxd;
          if (lo > maxdivided) maxdivided = lo;
          mat.append(P->vec_divide_by_var(n, lo, elem(i)));
        }
    }
  return mat.to_matrix();
}

References MatrixConstructor::append(), divide_by_var(), elem(), ERROR, get_ring(), Matrix(), MatrixConstructor, n_cols(), rows(), MatrixConstructor::to_matrix(), Ring::vec_degree_of_var(), and Ring::vec_divide_by_var().

Referenced by divide_by_var(), IM2_Matrix_divide_by_var(), and minimal_lead_terms().