bestclock
struct mISDNclock *iclock, *bestclock = NULL, *lastclock = NULL;
bestclock = iclock;
if (lastclock && bestclock != lastclock) {
if (bestclock && bestclock != iclock_current) {
bestclock->name);
bestclock->ctl(bestclock->priv, 1);
if (bestclock != iclock_current) {
iclock_current = bestclock;
static void bestclock(long freq, int *nom, int *den, int *div);
bestclock(freq, &nom, &den, &div);