From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Thu, 17 Mar 2016 13:28:45 +0000 (+0100)
Subject: util: fix UTI_FloatNetworkToHost() with very small exponents
X-Git-Tag: 2.4-pre1~38
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5833be6ccfb1bb97f18181dcad2d64640fd8561b;p=thirdparty%2Fchrony.git

util: fix UTI_FloatNetworkToHost() with very small exponents

Fix conversion of floating point numbers from the cmdmon format with
very small exponents, as for instance could be in the smoothing report
when the smoothing process ends.

This was broken in commit 8e71a46173afe01e11620980a1c7c028d7fd048f.
---

diff --git a/util.c b/util.c
index b654e632..9085ff6b 100644
--- a/util.c
+++ b/util.c
@@ -807,9 +807,10 @@ UTI_FloatNetworkToHost(Float f)
 
   x = ntohl(f.f);
 
-  exp = (x >> FLOAT_COEF_BITS) - FLOAT_COEF_BITS;
+  exp = x >> FLOAT_COEF_BITS;
   if (exp >= 1 << (FLOAT_EXP_BITS - 1))
       exp -= 1 << FLOAT_EXP_BITS;
+  exp -= FLOAT_COEF_BITS;
 
   coef = x % (1U << FLOAT_COEF_BITS);
   if (coef >= 1 << (FLOAT_COEF_BITS - 1))