From 95a584a30dd3d6682c0231665d51c14938d5be54 Mon Sep 17 00:00:00 2001
From: Patrick Niklaus <patrick.niklaus@student.kit.edu>
Date: Wed, 16 Nov 2016 00:05:08 +0000
Subject: [PATCH] Make rounding when computing PhantomNode weight symmetric

Resolves a problem where the duration in forward and backward direction
was slightly different.
---
 include/engine/geospatial_query.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/engine/geospatial_query.hpp b/include/engine/geospatial_query.hpp
index 9470522ff..cf27b2604 100644
--- a/include/engine/geospatial_query.hpp
+++ b/include/engine/geospatial_query.hpp
@@ -400,7 +400,8 @@ template <typename RTreeT, typename DataFacadeT> class GeospatialQuery
         }
         if (data.reverse_segment_id.id != SPECIAL_SEGMENTID)
         {
-            reverse_weight *= 1.0 - ratio;
+            const EdgeWeight difference = reverse_weight * ratio;
+            reverse_weight -= difference;
         }
 
         auto transformed = PhantomNodeWithDistance{PhantomNode{data,