1 files changed, 1 insertions, 0 deletions
diff --git a/tools.h b/tools.h
index 8ab931d..009fd68 100644
--- a/tools.h
+++ b/tools.h
@@ -40,5 +40,6 @@ int pcilib_check_deadline(struct timeval *tve, pcilib_timeout_t timeout);
 pcilib_timeout_t pcilib_calc_time_to_deadline(struct timeval *tve);
 int pcilib_sleep_until_deadline(struct timeval *tv);
 int pcilib_timecmp(struct timeval *tv1, struct timeval *tv2);
+pcilib_timeout_t pcilib_timediff(struct timeval *tve, struct timeval *tvs);
 
 #endif /* _PCITOOL_TOOS_H */