op_eq_eq.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
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:
11
12// bool operator==(const bitset<N>& rhs) const;
13// bool operator!=(const bitset<N>& rhs) const;
14
15#include <bitset>
16#include <cstdlib>
17#include <cassert>
18
19template <std::size_t N>
20std::bitset<N>
21make_bitset()
22{
23    std::bitset<N> v;
24    for (std::size_t i = 0; i < N; ++i)
25        v[i] = static_cast<bool>(std::rand() & 1);
26    return v;
27}
28
29template <std::size_t N>
30void test_equality()
31{
32    const std::bitset<N> v1 = make_bitset<N>();
33    std::bitset<N> v2 = v1;
34    assert(v1 == v2);
35    if (N > 0)
36    {
37        v2[N/2].flip();
38        assert(v1 != v2);
39    }
40}
41
42int main()
43{
44    test_equality<0>();
45    test_equality<1>();
46    test_equality<31>();
47    test_equality<32>();
48    test_equality<33>();
49    test_equality<63>();
50    test_equality<64>();
51    test_equality<65>();
52    test_equality<1000>();
53}
54