extern int sigwait __P ((__const sigset_t *__set, int *__sig));
# ifdef __USE_POSIX199309
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));
/* Select any of pending signals from SET and place information in INFO. */
extern int sigwaitinfo __P ((__const sigset_t *__set, siginfo_t *__info));