1
2 // (C) Copyright Edward Diener 2011-2015
3 // Use, modification and distribution are subject to the Boost Software License,
4 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt).
6
7 #include <boost/detail/lightweight_test.hpp>
8 #include <boost/preprocessor/cat.hpp>
9 #include <boost/preprocessor/control/if.hpp>
10 #include <boost/preprocessor/tuple/elem.hpp>
11
main()12 int main()
13 {
14
15 #if BOOST_PP_VARIADICS
16
17 #define TN_GEN_ONE(p) (1)
18 #define TN_GEN_ZERO(p) (0)
19
20 #define TN_TEST_ONE_MORE(parameter,ens) \
21 BOOST_PP_IF \
22 ( \
23 BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(1,0,ens),0), \
24 TN_GEN_ONE, \
25 TN_GEN_ZERO \
26 ) \
27 (parameter) \
28 /**/
29
30 #define TN_TEST_ONE(parameter,ens) \
31 BOOST_PP_TUPLE_ELEM \
32 ( \
33 1, \
34 0, \
35 TN_TEST_ONE_MORE(parameter,ens) \
36 ) \
37 /**/
38
39 BOOST_TEST_EQ(TN_TEST_ONE(A,(1)),1);
40 BOOST_TEST_EQ(TN_TEST_ONE(A,()),0);
41
42 #else
43
44 BOOST_ERROR("No variadic macro support");
45
46 #endif /* BOOST_PP_VARIADICS */
47
48 return boost::report_errors();
49
50 }
51