tc_delta
if (tc_delta(tk, &delta))
if (tc_delta(tk, &delta))
if (tc_delta(tk, &delta))
TIMECOUNT_TO_BINTIME(tc_delta(th), th->th_scale, bt);
TIMECOUNT_TO_BINTIME(tc_delta(th), th->th_scale, bt);
TIMECOUNT_TO_BINTIME(tc_delta(th), th->th_scale, bt);
delta = tc_delta(th);