From 057597e385d0db34f681a0098dbeed62e636922e Mon Sep 17 00:00:00 2001
From: vng <viktor.govako@gmail.com>
Date: Thu, 9 Dec 2010 21:05:16 +0200
Subject: [PATCH] Include guard.

---
 geometry/distance.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/geometry/distance.hpp b/geometry/distance.hpp
index 629ae09774..de22bece4a 100644
--- a/geometry/distance.hpp
+++ b/geometry/distance.hpp
@@ -1,3 +1,4 @@
+#pragma once
 #include "../base/base.hpp"
 
 // Similarly to namespace m2 - 2d math, this is a namespace for nd math.