operator-() [2/2]

RingElement * RingElement::operator-

(

const RingElement &

b

)

const

Definition at line 69 of file relem.cpp.

{
  if (R != b.get_ring())
    {
      ERROR(
          "ring subtraction requires both elements to have the same base ring");
      return nullptr;
    }
  ring_elem result = R->subtract(get_value(), b.get_value());
  if (error()) return nullptr;
  return new RingElement(R, result);
}

References ERROR, error(), get_ring(), get_value(), R, result(), and RingElement().