X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/7aa087a7e0f7829c8c6778fa420e0b5df0d0ca77..3731bd7ce44652975105ade6527aa73bc6107784:/lib/timeval.h

diff --git a/lib/timeval.h b/lib/timeval.h
index ff8ccf0..9ec8c31 100644
--- a/lib/timeval.h
+++ b/lib/timeval.h
@@ -38,8 +38,8 @@ static inline struct timeval tvsub(const struct timeval a,
   return r;
 }
 
-static inline uint64_t tvsub_us(const struct timeval a,
-                                const struct timeval b) {
+static inline int64_t tvsub_us(const struct timeval a,
+                               const struct timeval b) {
   return (((uint64_t)a.tv_sec * 1000000 + a.tv_usec)
           - ((uint64_t)b.tv_sec * 1000000 + b.tv_usec));
 }