DIFF19041970
return (t = t + DIFF19041970);
return (t = t - DIFF19041970);
tvp->tv_sec = sec - DIFF19041970;
sec = tvp->tv_sec + DIFF19041970;
(sc->sc_tod < DIFF19041970)) {
tvp->tv_sec = sc->sc_tod - DIFF19041970;
sec = tvp->tv_sec + DIFF19041970;
tvp->tv_sec = sec - DIFF19041970;
ok = (sec > DIFF19041970) && (sec < 0xf0000000);
sec = tvp->tv_sec + DIFF19041970;