from_rational()

bool GF::from_rational ( mpq_srcptr q, ring_elem & result ) const

virtual

Implements Ring.

Definition at line 230 of file GF.cpp.

{
  // a will be an element of ZZ/p
  ring_elem a;
  bool ok1 = _originalR->getCoefficients()->from_rational(q, a);
  if (not ok1) return false;
  std::pair<bool, long> b =
      _originalR->getCoefficients()->coerceToLongInteger(a);
  if (b.first)
    {
      result = GF::from_long(b.second);
      return true;
    }
  return false;
}

References _originalR, from_long(), and result().