xbt_swag_foreach(elem, elem_list) {
if (elem->variable->weight <= 0)
break;
if (elem->variable->value > 0)
break;
if ((elem->value > 0)) {
xbt_swag_foreach(elem, elem_list) {
if (elem->variable->weight <= 0)
break;
if (elem->variable->value > 0)
break;
if ((elem->value > 0)) {