From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Thu, 23 Feb 2017 11:56:30 +0000 (+0100)
Subject: chrony: fix conversion of very small floating-poing values
X-Git-Tag: collectd-5.8.0~172^2~5
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=e02ae075ce9626f64cbc4e61024fa4610c21bcd3

chrony: fix conversion of very small floating-poing values

This is copied from the chrony code.
---

diff --git a/src/chrony.c b/src/chrony.c
index 0733e130..6cf29144 100644
--- a/src/chrony.c
+++ b/src/chrony.c
@@ -584,9 +584,10 @@ static double ntohf(tFloat p_float) {
   uint32_t uval;
 
   uval = ntohl(p_float.value);
-  exp = (uval >> FLOAT_COEF_BITS) - FLOAT_COEF_BITS;
+  exp = (uval >> FLOAT_COEF_BITS);
   if (exp >= 1 << (FLOAT_EXP_BITS - 1))
     exp -= 1 << FLOAT_EXP_BITS;
+  exp -= FLOAT_COEF_BITS;
 
   /* coef = (x << FLOAT_EXP_BITS) >> FLOAT_EXP_BITS; */
   coef = uval % (1U << FLOAT_COEF_BITS);