1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // test bool none() const;
10 
11 #include <bitset>
12 #include <cassert>
13 #include <cstddef>
14 
15 #include "test_macros.h"
16 
17 template <std::size_t N>
test_none()18 void test_none() {
19     std::bitset<N> v;
20     v.reset();
21     assert(v.none() == true);
22     v.set();
23     assert(v.none() == (N == 0));
24     if (v.size() > 1) {
25         v[N/2] = false;
26         assert(v.none() == false);
27         v.reset();
28         v[N/2] = true;
29         assert(v.none() == false);
30     }
31 }
32 
main(int,char **)33 int main(int, char**) {
34     test_none<0>();
35     test_none<1>();
36     test_none<31>();
37     test_none<32>();
38     test_none<33>();
39     test_none<63>();
40     test_none<64>();
41     test_none<65>();
42     test_none<1000>();
43 
44     return 0;
45 }
46