bitset.pass.cpp revision bc8d3f97eb5c958007f2713238472e0c1c8fe02c 
1//===----------------------------------------------------------------------===//
2//
3// ��������������������The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <functional>
11
12// template <class T>
13// struct hash
14//     : public unary_function<T, size_t>
15// {
16//     size_t operator()(T val) const;
17// };
18
19// Not very portable
20
21#include <bitset>
22#include <cassert>
23#include <type_traits>
24
25template <std::size_t N>
26void
27test()
28{
29    typedef std::bitset<N> T;
30    typedef std::hash<T> H;
31    static_assert((std::is_base_of<std::unary_function<T, std::size_t>,
32                                   H>::value), "");
33    H h;
34    T bs(static_cast<unsigned long long>(N));
35    assert(h(bs) == N);
36}
37
38int main()
39{
40    test<0>();
41    test<10>();
42    test<100>();
43    test<1000>();
44}
45