invert()

ring_elem GF::invert ( const ring_elem f ) const

virtual

Implements Ring.

Definition at line 417 of file GF.cpp.

{
  if (f.get_int() == _ZERO)
    throw exc::division_by_zero_error();
  if (f.get_int() == _ONE) return ring_elem(_ONE);
  return ring_elem(Q1_ - f.get_int());
}

References _ONE, _ZERO, ring_elem::get_int(), and Q1_.