| // Boost enable_if library |
| |
| // Copyright 2003 (c) The Trustees of Indiana University. |
| |
| // Use, modification, and distribution is 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) |
| |
| // Authors: Jaakko Jarvi (jajarvi at osl.iu.edu) |
| // Jeremiah Willcock (jewillco at osl.iu.edu) |
| // Andrew Lumsdaine (lums at osl.iu.edu) |
| |
| #include <boost/test/minimal.hpp> |
| |
| #include <boost/utility/enable_if.hpp> |
| #include <boost/type_traits/is_arithmetic.hpp> |
| |
| using boost::enable_if; |
| using boost::disable_if; |
| using boost::is_arithmetic; |
| |
| template <int N> struct dummy { |
| dummy(int) {}; |
| }; |
| |
| template<class T> |
| typename enable_if<is_arithmetic<T>, bool>::type |
| arithmetic_object(T t, dummy<0> = 0) { return true; } |
| |
| template<class T> |
| typename disable_if<is_arithmetic<T>, bool>::type |
| arithmetic_object(T t, dummy<1> = 0) { return false; } |
| |
| |
| int test_main(int, char*[]) |
| { |
| |
| BOOST_CHECK(arithmetic_object(1)); |
| BOOST_CHECK(arithmetic_object(1.0)); |
| |
| BOOST_CHECK(!arithmetic_object("1")); |
| BOOST_CHECK(!arithmetic_object(static_cast<void*>(0))); |
| |
| return 0; |
| } |
| |