[Boost-commit] svn:boost r80264 - trunk/boost/graph

Subject: [Boost-commit] svn:boost r80264 - trunk/boost/graph
From: jewillco_at_[hidden]
Date: 2012-08-27 15:05:25

Author: jewillco
Date: 2012-08-27 15:05:25 EDT (Mon, 27 Aug 2012)
New Revision: 80264
URL: http://svn.boost.org/trac/boost/changeset/80264

Log:
Made edge weight a reference based on a suggestion by Tristram Gräbener; made vertex distance variables const values
Text files modified: 
   trunk/boost/graph/relax.hpp |     5 +++--                                   
   1 files changed, 3 insertions(+), 2 deletions(-)

Modified: trunk/boost/graph/relax.hpp
==============================================================================
--- trunk/boost/graph/relax.hpp	(original)
+++ trunk/boost/graph/relax.hpp	2012-08-27 15:05:25 EDT (Mon, 27 Aug 2012)
@@ -49,8 +49,9 @@
       Vertex u = source(e, g), v = target(e, g);
       typedef typename property_traits<DistanceMap>::value_type D;
       typedef typename property_traits<WeightMap>::value_type W;
-      D d_u = get(d, u), d_v = get(d, v);
-      W w_e = get(w, e);
+      const D d_u = get(d, u);
+      const D d_v = get(d, v);
+      const W& w_e = get(w, e);
       
       // The redundant gets in the return statements are to ensure that extra
       // floating-point precision in x87 registers does not lead to relax()