#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008 && !defined XPG4
type {struct timeval}

element {struct timeval} time_t tv_sec
element {struct timeval} suseconds_t tv_usec

type {struct itimerval}

element {struct itimerval} {struct timeval} it_interval
element {struct itimerval} {struct timeval} it_value

type time_t
type suseconds_t

type fd_set
element fd_set long fds_bits []

constant ITIMER_REAL
constant ITIMER_VIRTUAL
constant ITIMER_PROF

macro FD_CLR
macro FD_ISSET
macro FD_SET
macro FD_ZERO

constant FD_SETSIZE

function int getitimer (int, struct itimerval*)
function int setitimer (int, const struct itimerval*, struct itimerval*)
function int gettimeofday (struct timeval*, void*)
function int select (int, fd_set*, fd_set*, fd_set*, struct timeval*)
function int utimes (const char*, const struct timeval [2])

allow fds_*
allow it_*
allow tv_*
allow FD_*
allow ITIMER_*
allow *_t

allow-header sys/select.h
#endif