-static void set_alarm P_ ((void));
-static void schedule_atimer P_ ((struct atimer *));
-static struct atimer *append_atimer_lists P_ ((struct atimer *,
- struct atimer *));
-SIGTYPE alarm_signal_handler ();
+static void set_alarm (void);
+static void schedule_atimer (struct atimer *);
+static struct atimer *append_atimer_lists (struct atimer *,
+ struct atimer *);
+SIGTYPE alarm_signal_handler (int signo);