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<CopyConstructible Fn, CopyConstructible... Types>
13 // unspecified bind(Fn, Types...);
14 // template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
15 // unspecified bind(Fn, Types...);
16
17 // http://llvm.org/bugs/show_bug.cgi?id=16343
18
19 #include <cmath>
20 #include <functional>
21 #include <cassert>
22
23 struct power
24 {
25 template <typename T>
26 T
operator ()power27 operator()(T a, T b)
28 {
29 return std::pow(a, b);
30 }
31 };
32
33 struct plus_one
34 {
35 template <typename T>
36 T
operator ()plus_one37 operator()(T a)
38 {
39 return a + 1;
40 }
41 };
42
43 int
main()44 main()
45 {
46 using std::placeholders::_1;
47
48 auto g = std::bind(power(), 2, _1);
49 assert(g(5) == 32);
50 assert(std::bind(plus_one(), g)(5) == 33);
51 }
52