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-rw-r--r--ext/date/lib/timelib.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/ext/date/lib/timelib.h b/ext/date/lib/timelib.h
index dfb7dc0300..3f8e1254ef 100644
--- a/ext/date/lib/timelib.h
+++ b/ext/date/lib/timelib.h
@@ -138,5 +138,7 @@ int timelib_astro_rise_set_altitude(timelib_time *time, double lon, double lat,
/* from interval.c */
timelib_rel_time *timelib_diff(timelib_time *one, timelib_time *two);
+timelib_time *timelib_add(timelib_time *t, timelib_rel_time *interval);
+timelib_time *timelib_sub(timelib_time *t, timelib_rel_time *interval);
#endif