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 // <unordered_set>
11 
12 // template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
13 //           class Alloc = allocator<Value>>
14 // class unordered_multiset
15 
16 // size_type bucket(const key_type& __k) const;
17 
18 #ifdef _LIBCPP_DEBUG
19 #define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
20 #endif
21 
22 #include <unordered_set>
23 #include <cassert>
24 
25 #include "../../min_allocator.h"
26 
27 int main()
28 {
29     {
30         typedef std::unordered_multiset<int> C;
31         typedef int P;
32         P a[] =
33         {
34             P(1),
35             P(2),
36             P(3),
37             P(4),
38             P(1),
39             P(2)
40         };
41         const C c(std::begin(a), std::end(a));
42         size_t bc = c.bucket_count();
43         assert(bc >= 7);
44         for (size_t i = 0; i < 13; ++i)
45             assert(c.bucket(i) == i % bc);
46     }
47 #if __cplusplus >= 201103L
48     {
49         typedef std::unordered_multiset<int, std::hash<int>,
50                                       std::equal_to<int>, min_allocator<int>> C;
51         typedef int P;
52         P a[] =
53         {
54             P(1),
55             P(2),
56             P(3),
57             P(4),
58             P(1),
59             P(2)
60         };
61         const C c(std::begin(a), std::end(a));
62         size_t bc = c.bucket_count();
63         assert(bc >= 7);
64         for (size_t i = 0; i < 13; ++i)
65             assert(c.bucket(i) == i % bc);
66     }
67 #endif
68 #if _LIBCPP_DEBUG_LEVEL >= 1
69     {
70         typedef std::unordered_multiset<int> C;
71         C c;
72         C::size_type i = c.bucket(3);
73         assert(false);
74     }
75 #endif
76 }
77