struct timeval *timeval_store(struct timeval *tv, usec_t u);
char *format_timestamp(char *buf, size_t l, usec_t t);
-char *format_timestamp_utc(char *buf, size_t l, usec_t t);
+// UNNEEDED char *format_timestamp_utc(char *buf, size_t l, usec_t t);
char *format_timestamp_us(char *buf, size_t l, usec_t t);
char *format_timestamp_us_utc(char *buf, size_t l, usec_t t);
char *format_timestamp_relative(char *buf, size_t l, usec_t t);
void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t);
int dual_timestamp_deserialize(const char *value, dual_timestamp *t);
-int parse_timestamp(const char *t, usec_t *usec);
+// UNNEEDED int parse_timestamp(const char *t, usec_t *usec);
int parse_sec(const char *t, usec_t *usec);
int parse_nsec(const char *t, nsec_t *nsec);
-bool ntp_synced(void);
+// UNNEEDED bool ntp_synced(void);
-int get_timezones(char ***l);
-bool timezone_is_valid(const char *name);
+// UNNEEDED int get_timezones(char ***l);
+// UNNEEDED bool timezone_is_valid(const char *name);
clockid_t clock_boottime_or_monotonic(void);