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 | // <unordered_set> |
10 | |
11 | // template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>, |
12 | // class Alloc = allocator<Value>> |
13 | // class unordered_multiset |
14 | |
15 | // key_equal key_eq() const; |
16 | |
17 | #include <unordered_set> |
18 | #include <cassert> |
19 | |
20 | int main(int, char**) { |
21 | typedef std::unordered_multiset<int> set_type; |
22 | set_type s; |
23 | |
24 | set_type::iterator i1 = s.insert(x: 1); |
25 | set_type::iterator i2 = s.insert(x: 1); |
26 | set_type::iterator i3 = s.insert(x: 2); |
27 | |
28 | const set_type& cs = s; |
29 | |
30 | assert(cs.key_eq()(*i1, *i1)); |
31 | assert(cs.key_eq()(*i2, *i2)); |
32 | assert(cs.key_eq()(*i3, *i3)); |
33 | |
34 | assert(cs.key_eq()(*i1, *i2)); |
35 | assert(cs.key_eq()(*i2, *i1)); |
36 | |
37 | assert(!cs.key_eq()(*i1, *i3)); |
38 | assert(!cs.key_eq()(*i3, *i1)); |
39 | |
40 | assert(!cs.key_eq()(*i2, *i3)); |
41 | assert(!cs.key_eq()(*i3, *i2)); |
42 | |
43 | return 0; |
44 | } |
45 | |