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#ifndef _SIGNAL_H
#if defined __need_sig_atomic_t || defined __need_sigset_t
# include <signal/signal.h>
#else
# include <signal/signal.h>
/* Now define the internal interfaces. */
extern __sighandler_t __bsd_signal __P ((int __sig, __sighandler_t __handler));
extern int __kill __P ((__pid_t __pid, int __sig));
extern int __sigblock __P ((int __mask));
extern int __sigsetmask __P ((int __mask));
extern int __sigprocmask __P ((int __how,
__const sigset_t *__set, sigset_t *__oset));
extern int __sigsuspend __P ((__const sigset_t *__set));
extern int __sigwait __P ((__const sigset_t *__set, int *__sig));
extern int __sigwaitinfo __P ((__const sigset_t *__set, siginfo_t *__info));
extern int __sigtimedwait __P ((__const sigset_t *__set, siginfo_t *__info,
__const struct timespec *__timeout));
extern int __sigqueue __P ((__pid_t __pid, int __sig,
__const union sigval __val));
extern int __sigvec __P ((int __sig, __const struct sigvec *__vec,
struct sigvec *__ovec));
extern int __sigreturn __P ((struct sigcontext *__scp));
extern int __sigaltstack __P ((__const struct sigaltstack *__ss,
struct sigaltstack *__oss));
/* Allocate real-time signal with highest/lowest available priority. */
extern int __libc_allocate_rtsig __P ((int __high));
#endif
#endif
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