ptr->high=high;
if (ptr->low<ptr->high)
rbinsert(ptr->low,ptr->high,NULL,ptr->alloctree);
else
rbinsert(ptr->high,ptr->low,NULL,ptr->alloctree);
ptr->high=high;
if (ptr->low<ptr->high)
rbinsert(ptr->low,ptr->high,NULL,ptr->alloctree);
else
rbinsert(ptr->high,ptr->low,NULL,ptr->alloctree);