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 // test constexpr bool test(size_t pos) const;
11 
12 #include <bitset>
13 #include <cstdlib>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 
18 #if defined(TEST_COMPILER_C1XX)
19 #pragma warning(disable: 6294) // Ill-defined for-loop:  initial condition does not satisfy test.  Loop body not executed.
20 #endif
21 
22 template <std::size_t N>
23 std::bitset<N>
24 make_bitset()
25 {
26     std::bitset<N> v;
27     for (std::size_t i = 0; i < N; ++i)
28         v[i] = static_cast<bool>(std::rand() & 1);
29     return v;
30 }
31 
32 template <std::size_t N>
33 void test_test(bool test_throws)
34 {
35     const std::bitset<N> v1 = make_bitset<N>();
36 #ifdef TEST_HAS_NO_EXCEPTIONS
37     if (test_throws) return;
38 #else
39     try
40     {
41 #endif
42         bool b = v1.test(50);
43         if (50 >= v1.size())
44             assert(false);
45         assert(b == v1[50]);
46         assert(!test_throws);
47 #ifndef TEST_HAS_NO_EXCEPTIONS
48     }
49     catch (std::out_of_range&)
50     {
51         assert(test_throws);
52     }
53 #endif
54 }
55 
56 int main()
57 {
58     test_test<0>(true);
59     test_test<1>(true);
60     test_test<31>(true);
61     test_test<32>(true);
62     test_test<33>(true);
63     test_test<63>(false);
64     test_test<64>(false);
65     test_test<65>(false);
66     test_test<1000>(false);
67 }
68