early-access version 3088

externals/vcpkg/buildtrees/boost-mpl/src/ost-1.79.0-b32ccae047.clean/book/chapter1/binary.hpp

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+//
+// Copyright 2005 David Abrahams and Aleksey Gurtovoy. 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)
+//
+#include "boost/mpl/long.hpp"
+#include "boost/mpl/alias.hpp"
+
+template< long n > struct binary
+    : mpl::long_< ( binary< n / 10 >::value << 1 ) + n % 10 >
+{
+};
+
+template<> struct binary<0>
+    : mpl::long_<0>
+{
+};