rawGetParts()

engine_RawRingElementArray rawGetParts	(	const M2_arrayint	wts,
		const RingElement *	f )

Definition at line 672 of file ringelement.cpp.

{
  try
    {
      const PolynomialRing *P = f->get_ring()->cast_to_PolynomialRing();
      if (P == nullptr)
        {
          ERROR("expected a polynomial");
          return nullptr;
        }
      long relems_len;
      ring_elem *relems = P->get_parts(
          M2_arrayint_to_stdvector<int>(wts), f->get_value(), relems_len);
      engine_RawRingElementArray result =
          getmemarraytype(engine_RawRingElementArray, relems_len);
      result->len = static_cast<int>(relems_len);
      for (int i = 0; i < result->len; i++)
        result->array[i] = RingElement::make_raw(P, relems[i]);
      freemem(relems);
      return result;
  } catch (const exc::engine_error& e)
    {
      ERROR(e.what());
      return nullptr;
  }
}

References Ring::cast_to_PolynomialRing(), ERROR, freemem(), PolynomialRing::get_parts(), RingElement::get_ring(), RingElement::get_value(), getmemarraytype, M2_arrayint_to_stdvector(), RingElement::make_raw(), and result().