add timespec function prototypes

ubdns.h

@@ -38,9 +38,11 @@
 #define UBDNS_H
 
 #include <sys/socket.h>
+#include <sys/time.h>
 #include <sys/types.h>
 #include <assert.h>
 #include <inttypes.h>
+#include <time.h>
 
 #define UBDNS_CONF		"/etc/ubdns/ubdns.conf"
 #define UBDNS_KEYDIR		"/etc/ubdns/keys"
@@ -60,7 +62,13 @@ struct address {
 
 void arpa_qname_ip4(const void *addr, char **res);
 void arpa_qname_ip6(const void *addr, char **res);
+
 size_t domain_to_str(const uint8_t *src, size_t src_len, char *dst);
+
+void timespec_get(struct timespec *ts);
+void timespec_sub(const struct timespec *a, struct timespec *b);
+double timespec_to_double(const struct timespec *ts);
+
 int ubdns_lookup_forward(const char *hn, int af, struct address **_list, unsigned *_n_list);
 char *ubdns_lookup_reverse(const void *addr, int af);