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-rw-r--r--time/sys/time.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/time/sys/time.h b/time/sys/time.h
index ca82d87aa9..f7553dd3a1 100644
--- a/time/sys/time.h
+++ b/time/sys/time.h
@@ -155,4 +155,13 @@ extern int utimes __P ((__const char *__file, struct timeval __tvp[2]));
__END_DECLS
+#ifdef __USE_BSD
+/* Set an alarm to go off (generating a SIGALRM signal) in VALUE
+ microseconds. If INTERVAL is nonzero, when the alarm goes off, the
+ timer is reset to go off every INTERVAL microseconds thereafter.
+ Returns the number of microseconds remaining before the alarm. */
+extern unsigned int ualarm __P ((unsigned int __value,
+ unsigned int __interval));
+#endif
+
#endif /* sys/time.h */