1 // Boost enable_if library
2 
3 // Copyright 2003 (c) The Trustees of Indiana University.
4 
5 // Use, modification, and distribution is subject to the Boost Software
6 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt)
8 
9 //    Authors: Jaakko Jarvi (jajarvi at osl.iu.edu)
10 //             Jeremiah Willcock (jewillco at osl.iu.edu)
11 //             Andrew Lumsdaine (lums at osl.iu.edu)
12 
13 #include <boost/mpl/not.hpp>
14 
15 #include <boost/utility/enable_if.hpp>
16 #include <boost/type_traits/is_arithmetic.hpp>
17 #include <boost/detail/lightweight_test.hpp>
18 
19 using boost::mpl::not_;
20 using boost::enable_if;
21 using boost::is_arithmetic;
22 
23 template<class T>
24 typename enable_if<is_arithmetic<T>, bool>::type
arithmetic_object(T t)25 arithmetic_object(T t) { return true; }
26 
27 template<class T>
28 typename enable_if<not_<is_arithmetic<T> >, bool>::type
arithmetic_object(T t)29 arithmetic_object(T t) { return false; }
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31 
main()32 int main()
33 {
34 
35   BOOST_TEST(arithmetic_object(1));
36   BOOST_TEST(arithmetic_object(1.0));
37 
38   BOOST_TEST(!arithmetic_object("1"));
39   BOOST_TEST(!arithmetic_object(static_cast<void*>(0)));
40 
41   return boost::report_errors();
42 }
43 
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