Added boost header

test/external/boost/parameter/aux_/yesno.hpp

@@ -0,0 +1,26 @@
+// Copyright Daniel Wallin, David Abrahams 2005. Use, modification and
+// distribution is subject to 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)
+
+#ifndef YESNO_050328_HPP
+#define YESNO_050328_HPP
+
+#include <boost/mpl/bool.hpp>
+
+namespace boost { namespace parameter { namespace aux {
+
+// types used with the "sizeof trick" to capture the results of
+// overload resolution at compile-time.
+typedef char yes_tag;
+typedef char (&no_tag)[2];
+
+// mpl::true_ and mpl::false_ are not distinguishable by sizeof(),
+// so we pass them through these functions to get a type that is.
+yes_tag to_yesno(mpl::true_);
+no_tag to_yesno(mpl::false_);
+
+}}} // namespace boost::parameter::aux
+
+#endif // YESNO_050328_HPP
+