max_load_factor.pass.cpp revision 06086258d3d8c48a916ec51c33e1ad8f46821b81 
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_set
15
16// float max_load_factor() const;
17// void max_load_factor(float mlf);
18
19#ifdef _LIBCPP_DEBUG
20#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
21#endif
22
23#include <unordered_set>
24#include <cassert>
25
26#include "min_allocator.h"
27
28int main()
29{
30    {
31        typedef std::unordered_set<int> C;
32        typedef int P;
33        const C c;
34        assert(c.max_load_factor() == 1);
35    }
36    {
37        typedef std::unordered_set<int> C;
38        typedef int P;
39        C c;
40        assert(c.max_load_factor() == 1);
41        c.max_load_factor(2.5);
42        assert(c.max_load_factor() == 2.5);
43    }
44#if __cplusplus >= 201103L
45    {
46        typedef std::unordered_set<int, std::hash<int>,
47                                      std::equal_to<int>, min_allocator<int>> C;
48        typedef int P;
49        const C c;
50        assert(c.max_load_factor() == 1);
51    }
52    {
53        typedef std::unordered_set<int, std::hash<int>,
54                                      std::equal_to<int>, min_allocator<int>> C;
55        typedef int P;
56        C c;
57        assert(c.max_load_factor() == 1);
58        c.max_load_factor(2.5);
59        assert(c.max_load_factor() == 2.5);
60    }
61#endif
62#if _LIBCPP_DEBUG_LEVEL >= 1
63    {
64        typedef std::unordered_set<int> C;
65        C c;
66        c.max_load_factor(-0.5f);
67        assert(false);
68    }
69#endif
70}
71