ossl_time_divide
loss_delay = ossl_time_divide(loss_delay, K_TIME_THRESHOLD_DEN);
max_span = ossl_time_divide(idle_duration, 2);
statm->rtt_variance = ossl_time_divide(latest_rtt, 2);
statm->rtt_variance = ossl_time_divide(ossl_time_add(ossl_time_multiply(statm->rtt_variance, 3),
statm->smoothed_rtt = ossl_time_divide(ossl_time_add(ossl_time_multiply(statm->smoothed_rtt, 7),
statm->rtt_variance = ossl_time_divide(K_INITIAL_RTT, 2);
delay = ossl_time_divide(ossl_time_divide(ack->delay_time, OSSL_TIME_US),