SLEEP(3)                             BSD                              SLEEP(3)



NAME
     sleep - suspend execution for interval

SYNOPSIS
     sleep(seconds)
     unsigned seconds;

DESCRIPTION
     The current process is suspended from execution for the number of seconds
     specified by the argument.  The actual suspension time may be up to 1
     second less than that requested, because scheduled wakeups occur at fixed
     1-second intervals, and an arbitrary amount longer because of other
     activity in the system.

     The routine is implemented by setting an interval timer and pausing until
     it occurs.  The previous state of this timer is saved and restored.  If
     the sleep time exceeds the time to the expiration of the previous timer,
     the process sleeps only until the signal would have occurred, and the
     signal is sent 1 second later.

SEE ALSO
     setitimer(2), sigpause(2), usleep(3)