tuagg_sumup
tuagg_sumup(tu, &p->p_tu);
tuagg_sumup(tu, &pr->ps_tu);
tuagg_sumup(tu, &q->p_tu);
tuagg_sumup(&pr->ps_tu, &p->p_tu);
tuagg_sumup(&tu, &pr->ps_tu);
tuagg_sumup(&tu, &q->p_tu);
tuagg_sumup(&tu, &pr->ps_tu);
tuagg_sumup(&tu, &q->p_tu);
void tuagg_sumup(struct tusage *, struct tusage *);