Can I use old (2001) iofunc_notify_trigger() in QNX 6.3 ?

I’ve found on cvs.qnx.com iofunc_notify_trigger() source code
(from Jun, 2001).

Can I use it in QNX 6.3 ?

/I changed (in iofunc_notify_trigger.c) line:
nep->event.sigev_value.sival_int |= _NOTIFY_COND_INPUT << index;
into:
{
nep->event.sigev_value.sival_int = cnt & _NOTIFY_DATA_MASK; //ins by me
nep->event.sigev_value.sival_int |= _NOTIFY_COND_INPUT << index;
}