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 bitset<N> operator~() const;
11 
12 #include <bitset>
13 #include <cstdlib>
14 #include <cassert>
15 
16 #pragma clang diagnostic ignored "-Wtautological-compare"
17 
18 template <std::size_t N>
19 std::bitset<N>
make_bitset()20 make_bitset()
21 {
22     std::bitset<N> v;
23     for (std::size_t i = 0; i < N; ++i)
24         v[i] = static_cast<bool>(std::rand() & 1);
25     return v;
26 }
27 
28 template <std::size_t N>
test_not_all()29 void test_not_all()
30 {
31     std::bitset<N> v1 = make_bitset<N>();
32     std::bitset<N> v2 = ~v1;
33     for (std::size_t i = 0; i < N; ++i)
34         assert(v2[i] == ~v1[i]);
35 }
36 
main()37 int main()
38 {
39     test_not_all<0>();
40     test_not_all<1>();
41     test_not_all<31>();
42     test_not_all<32>();
43     test_not_all<33>();
44     test_not_all<63>();
45     test_not_all<64>();
46     test_not_all<65>();
47     test_not_all<1000>();
48 }
49