+// Copyright John Maddock 2019.
+
+// Use, modification and distribution are 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 SC_
# define SC_(x) static_cast<T>(BOOST_JOIN(x, L))
#endif