numerator()

RingElement * RingElement::numerator

(

)

const

Definition at line 360 of file relem.cpp.

{
  if (R == globalQQ) return new RingElement(globalZZ, globalQQ->numerator(val));
  const FractionField *K = R->cast_to_FractionField();
  if (K != nullptr)
    return new RingElement(K->get_ring(), K->numerator(val));
 
  const LocalRing *L = R->cast_to_LocalRing();
  if (L != nullptr)
    return new RingElement(L->get_ring(), L->numerator(val));
  ERROR("fraction field or local ring required");
  return nullptr;
}

References ERROR, FractionField::get_ring(), LocalRing::get_ring(), globalQQ, globalZZ, FractionField::numerator(), LocalRing::numerator(), R, RingElement(), and val.

Referenced by IM2_RingElement_numerator().