From 43ae3cd0471e0c68ea9d4bf72287cd9d250dfd84 Mon Sep 17 00:00:00 2001
From: Michael Stevens <mail@michael-stevens.de>
Date: Sat, 18 Jun 2005 08:18:12 +0000
Subject: [PATCH] Added future compatible alias(lhs) syntax

svn path=/trunk/boost/boost/numeric/ublas/; revision=29668
---
 include/boost/numeric/ublas/detail/definitions.hpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/boost/numeric/ublas/detail/definitions.hpp b/include/boost/numeric/ublas/detail/definitions.hpp
index b4fb5da9..8e0d67aa 100644
--- a/include/boost/numeric/ublas/detail/definitions.hpp
+++ b/include/boost/numeric/ublas/detail/definitions.hpp
@@ -88,6 +88,19 @@ namespace boost { namespace numeric { namespace ublas {
         return noalias_proxy<const C> (lvalue);
     }
 
+    // Future compatible syntax where lvalue is known to have an alias on the RHS
+    //  alias(lhs) = rhs_expression
+    template <class C>
+    BOOST_UBLAS_INLINE
+    C& alias (C& lvalue) {
+        return lvalue;
+    }
+    template <class C>
+    BOOST_UBLAS_INLINE
+    const C& alias (const C& lvalue) {
+        return lvalue;
+    }
+
 
     // Dimension accessors
     namespace dimension {