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 // <array>
11
12 // tuple_element<I, array<T, N> >::type
13
14 #include <array>
15 #include <type_traits>
16
17 template <class T>
test()18 void test()
19 {
20 {
21 typedef T Exp;
22 typedef std::array<T, 3> C;
23 static_assert((std::is_same<typename std::tuple_element<0, C>::type, Exp>::value), "");
24 static_assert((std::is_same<typename std::tuple_element<1, C>::type, Exp>::value), "");
25 static_assert((std::is_same<typename std::tuple_element<2, C>::type, Exp>::value), "");
26 }
27 {
28 typedef T const Exp;
29 typedef std::array<T, 3> const C;
30 static_assert((std::is_same<typename std::tuple_element<0, C>::type, Exp>::value), "");
31 static_assert((std::is_same<typename std::tuple_element<1, C>::type, Exp>::value), "");
32 static_assert((std::is_same<typename std::tuple_element<2, C>::type, Exp>::value), "");
33 }
34 {
35 typedef T volatile Exp;
36 typedef std::array<T, 3> volatile C;
37 static_assert((std::is_same<typename std::tuple_element<0, C>::type, Exp>::value), "");
38 static_assert((std::is_same<typename std::tuple_element<1, C>::type, Exp>::value), "");
39 static_assert((std::is_same<typename std::tuple_element<2, C>::type, Exp>::value), "");
40 }
41 {
42 typedef T const volatile Exp;
43 typedef std::array<T, 3> const volatile C;
44 static_assert((std::is_same<typename std::tuple_element<0, C>::type, Exp>::value), "");
45 static_assert((std::is_same<typename std::tuple_element<1, C>::type, Exp>::value), "");
46 static_assert((std::is_same<typename std::tuple_element<2, C>::type, Exp>::value), "");
47 }
48 }
49
main()50 int main()
51 {
52 test<double>();
53 test<int>();
54 }
55