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-rw-r--r--calendar/timeutil.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/calendar/timeutil.h b/calendar/timeutil.h
index 9c9d2d8a80..73b7e607dc 100644
--- a/calendar/timeutil.h
+++ b/calendar/timeutil.h
@@ -17,6 +17,8 @@ time_t time_from_isodate (char *str);
time_t time_from_start_duration (time_t start, char *duration);
char *isodate_from_time_t (time_t t);
int get_time_t_hour (time_t t);
+int isodiff_to_secs (char *str);
+char *isodiff_from_secs (int secs);
time_t time_add_minutes (time_t time, int minutes);
time_t time_add_day (time_t time, int days);