From d3419f2f4bcac79065a8067d41630bd702046eb8 Mon Sep 17 00:00:00 2001
From: "arseny.kapoulkine"
 <arseny.kapoulkine@99668b35-9821-0410-8761-19e4c4f06640>
Date: Sat, 29 May 2010 13:12:46 +0000
Subject: Added round_nearest_nzero explanation

git-svn-id: http://pugixml.googlecode.com/svn/trunk@462 99668b35-9821-0410-8761-19e4c4f06640
---
 src/pugixpath.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/pugixpath.cpp')

diff --git a/src/pugixpath.cpp b/src/pugixpath.cpp
index d20baad..2296814 100644
--- a/src/pugixpath.cpp
+++ b/src/pugixpath.cpp
@@ -444,6 +444,7 @@ namespace
 	double round_nearest_nzero(double value)
 	{
 		// same as round_nearest, but returns -0 for [-0.5, -0]
+		// ceil is used to differentiate between +0 and -0 (we return -0 for [-0.5, -0] and +0 for +0)
 		return (value >= -0.5 && value <= 0) ? ceil(value) : floor(value + 0.5);
 	}
 	
-- 
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