IM2_Ring_skew_polyring()

const Ring * IM2_Ring_skew_polyring	(	const Ring *	R,
		M2_arrayint	skewvars )

Definition at line 153 of file ring.cpp.

{
  try
    {
      const PolynomialRing *P = R->cast_to_PolynomialRing();
      if (P == nullptr)
        {
          ERROR("expected a polynomial ring");
          return nullptr;
        }
      SkewPolynomialRing *result = SkewPolynomialRing::create(
          P->getCoefficients(), P->getMonoid(), skewvars);
      intern_polyring(result);
      return result;
  } catch (const exc::engine_error& e)
    {
      ERROR(e.what());
      return nullptr;
  }
}

References Ring::cast_to_PolynomialRing(), SkewPolynomialRing::create(), ERROR, PolynomialRing::getCoefficients(), PolynomialRing::getMonoid(), intern_polyring(), and result().