1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <functional>
11 
12 // template <class Arg, class Result>
13 // struct unary_function
14 // {
15 //     typedef Arg    argument_type;
16 //     typedef Result result_type;
17 // };
18 
19 #include <functional>
20 #include <type_traits>
21 
main()22 int main()
23 {
24     static_assert((std::is_same<std::unary_function<unsigned, char>::argument_type, unsigned>::value), "");
25     static_assert((std::is_same<std::unary_function<unsigned, char>::result_type, char>::value), "");
26 }
27