TS_TSTAMPDCDSET
CLR(tp->t_flags, TS_TSTAMPDCDSET);
SET(tp->t_flags, TS_TSTAMPDCDSET);
doit |= ndcd ? ISSET(tp->t_flags, TS_TSTAMPDCDSET) :
if (tp->t_flags & (TS_TSTAMPDCDSET | TS_TSTAMPDCDCLR |
if (tp->t_flags & (TS_TSTAMPDCDSET | TS_TSTAMPDCDCLR |
if (tp->t_flags & (TS_TSTAMPDCDSET | TS_TSTAMPDCDCLR |