From 90b53beec5ba4ea19f144c17a5bbe7936e0c49c5 Mon Sep 17 00:00:00 2001
From: Roger Dingledine <arma@torproject.org>
Date: Thu, 8 Feb 2007 20:27:58 +0000
Subject: [PATCH] add a comment so i stop worrying

svn:r9532
---
 src/or/routerlist.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/or/routerlist.c b/src/or/routerlist.c
index 58dc80985c..541cbc76dc 100644
--- a/src/or/routerlist.c
+++ b/src/or/routerlist.c
@@ -1008,6 +1008,8 @@ smartlist_choose_by_bandwidth(smartlist_t *sl, int for_exit, int statuses)
   if (n_unknown) {
     int32_t avg_fast, avg_slow;
     if (total_exit_bw+total_nonexit_bw) {
+      /* if there's some bandwidth, there's at least one known router,
+       * so no worries about div by 0 here */
       avg_fast = avg_slow =
         (total_exit_bw+total_nonexit_bw)/(smartlist_len(sl)-n_unknown);
     } else {