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// UNSUPPORTED: c++98, c++03, c++11
11// <experimental/type_traits>
12
13// template<class... B> struct conjunction;                           // C++17
14// template<class... B>
15//   constexpr bool conjunction_v = conjunction<B...>::value;         // C++17
16
17#include <experimental/type_traits>
18#include <cassert>
19
20namespace ex = std::experimental;
21
22struct True  { static constexpr bool value = true; };
23struct False { static constexpr bool value = false; };
24
25int main()
26{
27    static_assert ( ex::conjunction<>::value, "" );
28    static_assert ( ex::conjunction<std::true_type >::value, "" );
29    static_assert (!ex::conjunction<std::false_type>::value, "" );
30
31    static_assert ( ex::conjunction_v<>, "" );
32    static_assert ( ex::conjunction_v<std::true_type >, "" );
33    static_assert (!ex::conjunction_v<std::false_type>, "" );
34
35    static_assert ( ex::conjunction<std::true_type,  std::true_type >::value, "" );
36    static_assert (!ex::conjunction<std::true_type,  std::false_type>::value, "" );
37    static_assert (!ex::conjunction<std::false_type, std::true_type >::value, "" );
38    static_assert (!ex::conjunction<std::false_type, std::false_type>::value, "" );
39
40    static_assert ( ex::conjunction_v<std::true_type,  std::true_type >, "" );
41    static_assert (!ex::conjunction_v<std::true_type,  std::false_type>, "" );
42    static_assert (!ex::conjunction_v<std::false_type, std::true_type >, "" );
43    static_assert (!ex::conjunction_v<std::false_type, std::false_type>, "" );
44
45    static_assert ( ex::conjunction<std::true_type,  std::true_type,  std::true_type >::value, "" );
46    static_assert (!ex::conjunction<std::true_type,  std::false_type, std::true_type >::value, "" );
47    static_assert (!ex::conjunction<std::false_type, std::true_type,  std::true_type >::value, "" );
48    static_assert (!ex::conjunction<std::false_type, std::false_type, std::true_type >::value, "" );
49    static_assert (!ex::conjunction<std::true_type,  std::true_type,  std::false_type>::value, "" );
50    static_assert (!ex::conjunction<std::true_type,  std::false_type, std::false_type>::value, "" );
51    static_assert (!ex::conjunction<std::false_type, std::true_type,  std::false_type>::value, "" );
52    static_assert (!ex::conjunction<std::false_type, std::false_type, std::false_type>::value, "" );
53
54    static_assert ( ex::conjunction_v<std::true_type,  std::true_type,  std::true_type >, "" );
55    static_assert (!ex::conjunction_v<std::true_type,  std::false_type, std::true_type >, "" );
56    static_assert (!ex::conjunction_v<std::false_type, std::true_type,  std::true_type >, "" );
57    static_assert (!ex::conjunction_v<std::false_type, std::false_type, std::true_type >, "" );
58    static_assert (!ex::conjunction_v<std::true_type,  std::true_type,  std::false_type>, "" );
59    static_assert (!ex::conjunction_v<std::true_type,  std::false_type, std::false_type>, "" );
60    static_assert (!ex::conjunction_v<std::false_type, std::true_type,  std::false_type>, "" );
61    static_assert (!ex::conjunction_v<std::false_type, std::false_type, std::false_type>, "" );
62
63    static_assert ( ex::conjunction<True >::value, "" );
64    static_assert (!ex::conjunction<False>::value, "" );
65
66    static_assert ( ex::conjunction_v<True >, "" );
67    static_assert (!ex::conjunction_v<False>, "" );
68}
69