1 files changed, 1 insertions, 0 deletions
diff --git a/nsxiv.h b/nsxiv.h
index 4350864..67c2185 100644
--- a/nsxiv.h
+++ b/nsxiv.h
@@ -44,6 +44,7 @@
 
 #define TV_DIFF(t1,t2) (((t1)->tv_sec  - (t2)->tv_sec ) * 1000 + \
                         ((t1)->tv_usec - (t2)->tv_usec) / 1000)
+#define TV_TO_MS(tv)   (((tv)->tv_sec * 1000) + ((tv)->tv_usec / 1000))
 
 #define TV_SET_MSEC(tv,t) {             \
   (tv)->tv_sec  = (t) / 1000;           \