Added boost header

test/external/boost/iostreams/detail/enable_if_stream.hpp

@@ -0,0 +1,32 @@
+// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+// (C) Copyright 2003-2007 Jonathan Turkanis
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
+
+// See http://www.boost.org/libs/iostreams for documentation.
+
+#ifndef BOOST_IOSTREAMS_DETAIL_ENABLE_IF_STREAM_HPP_INCLUDED
+#define BOOST_IOSTREAMS_DETAIL_ENABLE_IF_STREAM_HPP_INCLUDED
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif              
+
+#include <boost/config.hpp>                // BOOST_NO_SFINAE.
+#include <boost/utility/enable_if.hpp>                  
+#include <boost/iostreams/traits_fwd.hpp>  // is_std_io.
+
+#if !defined(BOOST_NO_SFINAE) && \
+    !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x592))
+# define BOOST_IOSTREAMS_ENABLE_IF_STREAM(T) \
+    , typename boost::enable_if< boost::iostreams::is_std_io<T> >::type* = 0 \
+    /**/
+# define BOOST_IOSTREAMS_DISABLE_IF_STREAM(T) \
+    , typename boost::disable_if< boost::iostreams::is_std_io<T> >::type* = 0 \
+    /**/
+#else 
+# define BOOST_IOSTREAMS_ENABLE_IF_STREAM(T)
+# define BOOST_IOSTREAMS_DISABLE_IF_STREAM(T)
+#endif
+
+#endif // #ifndef BOOST_IOSTREAMS_DETAIL_ENABLE_IF_STREAM_HPP_INCLUDED