1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // UNSUPPORTED: c++03
10
11 // <functional>
12
13 // template<CopyConstructible Fn, CopyConstructible... Types>
14 // unspecified bind(Fn, Types...);
15 // template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
16 // unspecified bind(Fn, Types...);
17
18 // https://bugs.llvm.org/show_bug.cgi?id=16343
19
20 #include <cmath>
21 #include <functional>
22 #include <cassert>
23
24 #include "test_macros.h"
25
26 struct power
27 {
28 template <typename T>
29 T
operator ()power30 operator()(T a, T b)
31 {
32 return static_cast<T>(std::pow(a, b));
33 }
34 };
35
36 struct plus_one
37 {
38 template <typename T>
39 T
operator ()plus_one40 operator()(T a)
41 {
42 return a + 1;
43 }
44 };
45
main(int,char **)46 int main(int, char**)
47 {
48 using std::placeholders::_1;
49
50 auto g = std::bind(power(), 2, _1);
51 assert(g(5) == 32);
52 assert(std::bind(plus_one(), g)(5) == 33);
53
54 return 0;
55 }
56