From 4b0ef0922162580d7ac9d4740c3782534ed35660 Mon Sep 17 00:00:00 2001
From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Mon, 14 Nov 2016 08:43:54 +0100
Subject: [PATCH] sched: add more random bits to timeout scheduling

Extend the random value which is included in the calculation of the
delay from 16 to 32 bits. This makes scheduling of NTP transmissions
random to one microsecond for polling intervals up to 17.
---
 sched.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sched.c b/sched.c
index a7b8353..0ffbe9e 100644
--- a/sched.c
+++ b/sched.c
@@ -375,10 +375,10 @@ SCH_AddTimeoutInClass(double min_delay, double separation, double randomness,
   assert(class < SCH_NumberOfClasses);
 
   if (randomness > 0.0) {
-    uint16_t rnd;
+    uint32_t rnd;
 
     UTI_GetRandomBytes(&rnd, sizeof (rnd));
-    r = rnd / (double)0xffff * randomness + 1.0;
+    r = rnd * (randomness / (uint32_t)-1) + 1.0;
     min_delay *= r;
     separation *= r;
   }