Method compare

src/db/db/dbCellMapping.cc:143–180

  }

  bool compare (db::cell_index_type cell_a, db::cell_index_type cell_b)
  {
    if (cell_a != m_cell_a) {

      m_cell_a = cell_a;

      m_callers_a.clear ();
      m_layout_a.cell (cell_a).collect_caller_cells (m_callers_a, *m_selection_cone_a, -1);
      m_callers_a.insert (cell_a);

      m_trans.clear ();
      insert (m_layout_a, m_initial_cell_a, m_cell_a, m_callers_a, m_trans, db::ICplxTrans ());

    }

    m_repr_set = false;

    std::map<db::cell_index_type, db::ICplxTrans>::const_iterator r = m_repr.find (cell_b);
    if (r != m_repr.end ()) {
      m_repr_set = true;
      if (m_trans.find (r->second) == m_trans.end ()) {
        return false;
      }
    }

    std::set<db::cell_index_type> callers_b;
    m_layout_b.cell (cell_b).collect_caller_cells (callers_b, *m_selection_cone_b, -1);
    callers_b.insert (cell_b);

    trans_set_t trans (m_trans);

    double mag = m_layout_b.dbu () / m_layout_a.dbu ();
    if (! compare (m_layout_b, m_initial_cell_b, cell_b, callers_b, trans, db::ICplxTrans (mag), db::ICplxTrans (1.0 / mag))) {
      return false;
    }

    return trans.empty ();
  }

  void make_endpoint (db::cell_index_type /*cell_a*/, db::cell_index_type /*cell_b*/) 
  {