From b51965dddbed68f23c5e8c169c23c794313ce5f6 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 28 Jun 2011 17:17:23 +0200
Subject: Add boost subset as an implementation detail

---
 cutl/details/boost/preprocessor/arithmetic/sub.hpp | 50 ++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 cutl/details/boost/preprocessor/arithmetic/sub.hpp

(limited to 'cutl/details/boost/preprocessor/arithmetic/sub.hpp')

diff --git a/cutl/details/boost/preprocessor/arithmetic/sub.hpp b/cutl/details/boost/preprocessor/arithmetic/sub.hpp
new file mode 100644
index 0000000..182fa42
--- /dev/null
+++ b/cutl/details/boost/preprocessor/arithmetic/sub.hpp
@@ -0,0 +1,50 @@
+# /* Copyright (C) 2001
+#  * Housemarque Oy
+#  * http://www.housemarque.com
+#  *
+#  * 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)
+#  */
+#
+# /* Revised by Paul Mensonides (2002) */
+#
+# /* See http://www.boost.org for most recent version. */
+#
+# ifndef BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP
+# define BOOST_PREPROCESSOR_ARITHMETIC_SUB_HPP
+#
+# include <cutl/details/boost/preprocessor/arithmetic/dec.hpp>
+# include <cutl/details/boost/preprocessor/config/config.hpp>
+# include <cutl/details/boost/preprocessor/control/while.hpp>
+# include <cutl/details/boost/preprocessor/tuple/elem.hpp>
+#
+# /* BOOST_PP_SUB */
+#
+# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
+#    define BOOST_PP_SUB(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y)))
+# else
+#    define BOOST_PP_SUB(x, y) BOOST_PP_SUB_I(x, y)
+#    define BOOST_PP_SUB_I(x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y)))
+# endif
+#
+# define BOOST_PP_SUB_P(d, xy) BOOST_PP_TUPLE_ELEM(2, 1, xy)
+#
+# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
+#    define BOOST_PP_SUB_O(d, xy) BOOST_PP_SUB_O_I xy
+# else
+#    define BOOST_PP_SUB_O(d, xy) BOOST_PP_SUB_O_I(BOOST_PP_TUPLE_ELEM(2, 0, xy), BOOST_PP_TUPLE_ELEM(2, 1, xy))
+# endif
+#
+# define BOOST_PP_SUB_O_I(x, y) (BOOST_PP_DEC(x), BOOST_PP_DEC(y))
+#
+# /* BOOST_PP_SUB_D */
+#
+# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
+#    define BOOST_PP_SUB_D(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y)))
+# else
+#    define BOOST_PP_SUB_D(d, x, y) BOOST_PP_SUB_D_I(d, x, y)
+#    define BOOST_PP_SUB_D_I(d, x, y) BOOST_PP_TUPLE_ELEM(2, 0, BOOST_PP_WHILE_ ## d(BOOST_PP_SUB_P, BOOST_PP_SUB_O, (x, y)))
+# endif
+#
+# endif
-- 
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