Q_QADDI
error = Q_QADDI(&bkt_ub->q32.sq32, step);
error = Q_QADDI(&bkt_ub->q32.uq32, step);
error = Q_QADDI(&bkt_ub->q64.sq64, step);
error = Q_QADDI(&bkt_ub->q64.uq64, step);
error = Q_QADDI(&r_s64q, b_int);