#if !defined ISO && !defined POSIX
type time_t
type suseconds_t

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

type sigset_t

type {struct timespec}
element {struct timespec} time_t tv_sec
element {struct timespec} long tv_nsec

type fd_set
element fd_set long fds_bits []

function-macro void FD_CLR (int, fd_set*)
function-macro int FD_ISSET (int, fd_set*)
function-macro void FD_SET (int, fd_set*)
function-macro void FD_ZERO (fd_set*)

macro FD_SETSIZE

#ifdef XOPEN2K
function int pselect (int, fd_set*, fd_set*, fd_set*, const struct timespec*, const sigset_t*)
#endif
function int select (int, fd_set*, fd_set*, fd_set*, struct timeval*)

allow-header signal.h
allow-header sys/time.h
allow-header time.h
#endif