From 03c48dfca2fd3cd4a257251adebaf1c27edd4d7b Mon Sep 17 00:00:00 2001
From: Adam Wulkiewicz <adam.wulkiewicz@gmail.com>
Date: Wed, 27 Dec 2017 01:55:01 +0100
Subject: [PATCH] [strategies] Fix MSVC x64 conversion warnings.

---
 .../boost/geometry/strategies/cartesian/centroid_average.hpp  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/boost/geometry/strategies/cartesian/centroid_average.hpp b/include/boost/geometry/strategies/cartesian/centroid_average.hpp
index c12f6e202..32f551cf9 100644
--- a/include/boost/geometry/strategies/cartesian/centroid_average.hpp
+++ b/include/boost/geometry/strategies/cartesian/centroid_average.hpp
@@ -3,6 +3,7 @@
 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
+// Copyright (c) 2017 Adam Wulkiewicz, Lodz, Poland.
 
 // This file was modified by Oracle on 2015.
 // Modifications copyright (c) 2015 Oracle and/or its affiliates.
@@ -23,6 +24,7 @@
 #include <cstddef>
 
 #include <boost/geometry/algorithms/assign.hpp>
+#include <boost/geometry/algorithms/detail/signed_size_type.hpp>
 #include <boost/geometry/arithmetic/arithmetic.hpp>
 #include <boost/geometry/core/coordinate_type.hpp>
 #include <boost/geometry/core/point_type.hpp>
@@ -53,7 +55,7 @@ private :
     class sum
     {
         friend class average;
-        std::size_t count;
+        signed_size_type count;
         PointCentroid centroid;
 
     public :