MAX64
q->S = MAX64(q->F, pipe->V);
pipe->V = MAX64(q->S, pipe->V);
p->V = MAX64(p->V, neh->p[0].key);
q->S = MAX64(q->F, pipe->V);
pipe->V = MAX64(q->S, pipe->V);
p->V = MAX64(p->V, neh->p[0].key);