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