From 8a6bad9c59f70a666df3d951deb20715585a1cce Mon Sep 17 00:00:00 2001
From: frohlich <frohlich>
Date: Sat, 23 May 2009 12:02:23 +0000
Subject: [PATCH] Avoid division by zero.

Modified Files:
	src/Instrumentation/inst_vertical_speed_indicator.cxx
---
 src/Instrumentation/inst_vertical_speed_indicator.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Instrumentation/inst_vertical_speed_indicator.cxx b/src/Instrumentation/inst_vertical_speed_indicator.cxx
index fd339b481..0237a6ded 100644
--- a/src/Instrumentation/inst_vertical_speed_indicator.cxx
+++ b/src/Instrumentation/inst_vertical_speed_indicator.cxx
@@ -20,6 +20,7 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
+#include <limits>
 #include <simgear/math/interpolater.hxx>
 
 #include "inst_vertical_speed_indicator.hxx"
@@ -191,7 +192,7 @@ void InstVerticalSpeedIndicator::update (double dt)
     if (_serviceable_node->getBoolValue())
     {
 	// avoids hang, when freeze
-        if( !_freeze_node->getBoolValue() )
+        if( !_freeze_node->getBoolValue() && std::numeric_limits<double>::min() < fabs(dt))
 	{
 	    double pressure_inhg = _pressure_node->getDoubleValue();
 	    double sea_inhg = _sea_node->getDoubleValue();
-- 
2.39.5