void update(node *p)
{ /* update branch lengths around a node */
boolean negatives;
if (p->tip)
return;
makedists(p);
makebigv(p,&negatives);
if (negatives)
correctv(p);
littlev(p);
nuview(p);
} /* update */
void update(node *p)
{
/* update branch lengths around a node */
if (p->tip)
return;
makedists(p);
if (p->iter || p->next->iter || p->next->next->iter) {
makebigv(p);
correctv(p);
}
nuview(p);
} /* update */
