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_set
14
15// pair<iterator, iterator> equal_range(const key_type& k);
16
17#include <unordered_set>
18#include <cassert>
19
20#include "test_macros.h"
21#include "min_allocator.h"
22
23int main(int, char**)
24{
25 {
26 typedef std::unordered_set<int> C;
27 typedef C::iterator I;
28 typedef int P;
29 P a[] =
30 {
31 P(10),
32 P(20),
33 P(30),
34 P(40),
35 P(50),
36 P(50),
37 P(50),
38 P(60),
39 P(70),
40 P(80)
41 };
42 C c(std::begin(arr&: a), std::end(arr&: a));
43 std::pair<I, I> r = c.equal_range(x: 30);
44 assert(std::distance(r.first, r.second) == 1);
45 assert(*r.first == 30);
46 r = c.equal_range(x: 5);
47 assert(std::distance(r.first, r.second) == 0);
48 r = c.equal_range(x: 50);
49 assert(std::distance(r.first, r.second) == 1);
50 assert(*r.first == 50);
51 }
52#if TEST_STD_VER >= 11
53 {
54 typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
55 typedef C::iterator I;
56 typedef int P;
57 P a[] =
58 {
59 P(10),
60 P(20),
61 P(30),
62 P(40),
63 P(50),
64 P(50),
65 P(50),
66 P(60),
67 P(70),
68 P(80)
69 };
70 C c(std::begin(a), std::end(a));
71 std::pair<I, I> r = c.equal_range(30);
72 assert(std::distance(r.first, r.second) == 1);
73 assert(*r.first == 30);
74 r = c.equal_range(5);
75 assert(std::distance(r.first, r.second) == 0);
76 r = c.equal_range(50);
77 assert(std::distance(r.first, r.second) == 1);
78 assert(*r.first == 50);
79 }
80#endif
81
82 return 0;
83}
84

source code of libcxx/test/std/containers/unord/unord.set/equal_range_non_const.pass.cpp