printf("%s:%d: %s jnf(%lld, %a) want %a got %a, ulperr %.3f = %a + %a\n",
p->file, p->line, rstr(p->r), p->i, p->x, p->y, y, d, d-p->dy, p->dy);
printf("%s:%d: %s jnf(%lld, %a) want %a got %a, ulperr %.3f = %a + %a\n",
p->file, p->line, rstr(p->r), p->i, p->x, p->y, y, d, d-p->dy, p->dy);