[Boost-sandbox-cvs] boost-sandbox/boost/units quantity.hpp, 1.7, 1.8

[Steven W. <ste...@us...>]

Update of /cvsroot/boost-sandbox/boost-sandbox/boost/units
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv2109/boost-sandbox/boost/units

Modified Files:
	quantity.hpp 
Log Message:
Optimized quantity_cast for UDTs (enabled RVO)

Index: quantity.hpp
===================================================================
RCS file: /cvsroot/boost-sandbox/boost-sandbox/boost/units/quantity.hpp,v
retrieving revision 1.7
retrieving revision 1.8
diff -u -d -r1.7 -r1.8
--- quantity.hpp	29 Mar 2007 19:10:39 -0000	1.7
+++ quantity.hpp	29 Mar 2007 19:19:54 -0000	1.8
@@ -375,7 +375,10 @@
 {
     typedef quantity<Unit1,Y>    type;
     
-    type operator()(quantity<Unit2,X>& source)                { return type(source); }
+    type operator()(quantity<Unit2,X>& source)
+    {
+        return conversion_helper<quantity<Unit2,X>,quantity<Unit1,Y> >::convert(source);
+    }
 };
 
 /// specialization for casting from one unit system to another
@@ -384,7 +387,10 @@
 {
     typedef quantity<Unit1,Y>    type;
     
-    type operator()(const quantity<Unit2,X>& source)                { return type(source); }
+    type operator()(const quantity<Unit2,X>& source)
+    {
+        return conversion_helper<quantity<Unit2,X>,quantity<Unit1,Y> >::convert(source);
+    }
 };
 
 /// specialization for casting to the value type