#ifdef __USE_POSIX
+# ifdef __USE_POSIX199309
/* We need `struct timespec' later on. */
# define __need_timespec
# include <time.h>
/* Get the `siginfo_t' type plus the needed symbols. */
# include <bits/siginfo.h>
+# endif
/* Clear all signals from SET. */
extern int sigemptyset __P ((sigset_t *__set));
/* Return 1 if SIGNO is in SET, 0 if not. */
extern int sigismember __P ((__const sigset_t *__set, int __signo));
-# ifdef __USE_GNU
+# ifdef __USE_GNU
/* Return non-empty value is SET is not empty. */
extern int sigisemptyset __P ((__const sigset_t *__set));
/* Build new signal set by combining the two inputs set using logical OR. */
extern int sigorset __P ((sigset_t *__set, __const sigset_t *__left,
__const sigset_t *__right));
-# endif /* GNU */
+# endif /* GNU */
/* Get the system-specific definitions of `struct sigaction'
and the `SA_*' and `SIG_*'. constants. */
-# include <bits/sigaction.h>
+# include <bits/sigaction.h>
/* Get and/or change the set of blocked signals. */
extern int sigprocmask __P ((int __how,
/* Select any of pending signals from SET or wait for any to arrive. */
extern int sigwait __P ((__const sigset_t *__set, int *__sig));
+# ifdef __USE_POSIX199309
/* Select any of pending signals from SET and place information in INFO. */
extern int sigwaitinfo __P ((__const sigset_t *__set, siginfo_t *__info));
signal. */
extern int sigqueue __P ((__pid_t __pid, int __sig,
__const union sigval __val));
+# endif /* Use POSIX 199306. */
#endif /* Use POSIX. */
extern __sighandler_t sigset __P ((int __sig, __sighandler_t __disp));
#endif /* use Unix98 */
-#ifdef __USE_POSIX
+#ifdef __USE_POSIX199506
/* Some of the functions for handling signals in threaded programs must
be defined here. */
# include <bits/sigthread.h>