subtract()

ring_elem PolyRing::subtract ( const ring_elem f, const ring_elem g ) const

virtual

Implements Ring.

Definition at line 773 of file poly.cpp.

{
  ring_elem a = copy(f);
  ring_elem b = negate(g);
  internal_add_to(a, b);
  return a;
}

References copy(), internal_add_to(), and negate().