the assert triggered, no explanation forthcoming, this might help

1 files changed, 1 insertions, 1 deletions

diff --git a/ev.c b/ev.c
index 654821b..7c278f3 100644
--- a/ev.c
+++ b/ev.c
@@ -1239,7 +1239,7 @@ periodics_reify (EV_P)
         }
       else if (w->interval)
         {
-          ((WT)w)->at = w->offset + floor ((ev_rt_now - w->offset) / w->interval + 1.) * w->interval;
+          ((WT)w)->at = w->offset + (floor ((ev_rt_now - w->offset) / w->interval) + 1.) * w->interval;
           assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
           downheap ((WT *)periodics, periodiccnt, 0);
         }