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Diffstat (limited to 'libical/src/libical/icalduration.h') (more/less context) (ignore whitespace changes)
-rw-r--r--libical/src/libical/icalduration.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/libical/src/libical/icalduration.h b/libical/src/libical/icalduration.h
index dd6e311..0e64cad 100644
--- a/libical/src/libical/icalduration.h
+++ b/libical/src/libical/icalduration.h
@@ -42,14 +42,16 @@ struct icaldurationtype
};
struct icaldurationtype icaldurationtype_from_int(int t);
struct icaldurationtype icaldurationtype_from_string(const char*);
int icaldurationtype_as_int(struct icaldurationtype duration);
char* icaldurationtype_as_ical_string(struct icaldurationtype d);
-struct icaldurationtype icaldurationtype_null_duration();
+struct icaldurationtype icaldurationtype_null_duration(void);
+struct icaldurationtype icaldurationtype_bad_duration(void);
int icaldurationtype_is_null_duration(struct icaldurationtype d);
+int icaldurationtype_is_bad_duration(struct icaldurationtype d);
struct icaltimetype icaltime_add(struct icaltimetype t,
struct icaldurationtype d);
struct icaldurationtype icaltime_subtract(struct icaltimetype t1,
struct icaltimetype t2);