eval()

void M2::ARingGFFlintBig::eval	(	const RingMap *	map,
		const ElementType &	f,
		int	first_var,
		ring_elem &	result ) const

Definition at line 154 of file aring-gf-flint-big.cpp.

{
  const Ring* R = map->get_ring();  // the target ring
  result = R->from_long(0);
  if (is_zero(f)) return;
 
  ring_elem a = map->elem(first_var);
  std::vector<long> poly;
  getSmallIntegerCoefficients(f, poly);
  for (long i = poly.size() - 1; i >= 0; i--)
    {
      if (!R->is_zero(result)) result = R->mult(a, result);
      if (poly[i] != 0)
        {
          ring_elem c = R->from_long(poly[i]);
          result = R->add(result, c);
        }
    }
}

References Ring::add(), RingMap::elem(), Ring::from_long(), RingMap::get_ring(), getSmallIntegerCoefficients(), is_zero(), Ring::is_zero(), Ring::mult(), and result().