IM2_RingElement_to_rational()

gmp_QQorNull IM2_RingElement_to_rational

(

const RingElement *

a

)

Definition at line 126 of file ringelement.cpp.

{
  if (!a->get_ring()->is_QQ())
    {
      ERROR("expected an element of QQ");
      return nullptr;
    }
  return a->get_value().get_mpq();
}

References ERROR, ring_elem::get_mpq(), RingElement::get_ring(), RingElement::get_value(), and Ring::is_QQ().