promote()

bool FractionField::promote ( const Ring * R, const ring_elem f, ring_elem & result ) const

virtual

Implements Ring.

Definition at line 308 of file frac.cpp.

{
  // Rf = R ---> frac R
  if (Rf == R_)
    {
      frac_elem *g = new_frac_elem();
      g->numer = R_->copy(f);
      g->denom = R_->from_long(1);
      result = FRAC_RINGELEM(g);
      return true;
    }
 
  return false;
}

References frac_elem::denom, FRAC_RINGELEM, new_frac_elem(), frac_elem::numer, R_, result(), and Ring::Ring().