From cf80d2cf66b06fb740ee736b94b654fe6a51debc Mon Sep 17 00:00:00 2001
From: Gunter Winkler <guwi17@gmx.de>
Date: Mon, 22 Mar 2010 22:21:26 +0000
Subject: [PATCH] storage.hpp: see #3968, applied patch to use references
 instead of copies in swap implementations

svn path=/trunk/boost/numeric/ublas/; revision=60780
---
 include/boost/numeric/ublas/storage.hpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/boost/numeric/ublas/storage.hpp b/include/boost/numeric/ublas/storage.hpp
index ba176c41..b7f9009b 100644
--- a/include/boost/numeric/ublas/storage.hpp
+++ b/include/boost/numeric/ublas/storage.hpp
@@ -1598,13 +1598,13 @@ namespace boost { namespace numeric { namespace ublas {
         }
 
         BOOST_UBLAS_INLINE
-        void swap(self_type rhs) {
+        void swap(self_type& rhs) {
             self_type tmp(rhs);
             rhs = *this;
             *this = tmp;
         }
         BOOST_UBLAS_INLINE
-        friend void swap(self_type lhs, self_type rhs) {
+        friend void swap(self_type& lhs, self_type& rhs) {
             lhs.swap(rhs);
         }
 
@@ -1770,13 +1770,13 @@ namespace boost { namespace numeric { namespace ublas {
         }
 
         BOOST_UBLAS_INLINE
-        void swap(self_type rhs) {
+        void swap(self_type& rhs) {
             self_type tmp(rhs);
             rhs = *this;
             *this = tmp;
         }
         BOOST_UBLAS_INLINE
-        friend void swap(self_type lhs, self_type rhs) {
+        friend void swap(self_type& lhs, self_type& rhs) {
             lhs.swap(rhs);
         }