7a6b7cedcb
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@184635 91177308-0d34-0410-b5e6-96231b3b80d8
78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <unordered_map>
|
|
|
|
// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
|
|
// class Alloc = allocator<pair<const Key, T>>>
|
|
// class unordered_map
|
|
|
|
// float load_factor() const
|
|
|
|
#include <unordered_map>
|
|
#include <string>
|
|
#include <cassert>
|
|
#include <cfloat>
|
|
|
|
#include "../../min_allocator.h"
|
|
|
|
int main()
|
|
{
|
|
{
|
|
typedef std::unordered_map<int, std::string> C;
|
|
typedef std::pair<int, std::string> P;
|
|
P a[] =
|
|
{
|
|
P(10, "ten"),
|
|
P(20, "twenty"),
|
|
P(30, "thirty"),
|
|
P(40, "fourty"),
|
|
P(50, "fifty"),
|
|
P(60, "sixty"),
|
|
P(70, "seventy"),
|
|
P(80, "eighty"),
|
|
};
|
|
const C c(std::begin(a), std::end(a));
|
|
assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
|
|
}
|
|
{
|
|
typedef std::unordered_map<int, std::string> C;
|
|
typedef std::pair<int, std::string> P;
|
|
const C c;
|
|
assert(c.load_factor() == 0);
|
|
}
|
|
#if __cplusplus >= 201103L
|
|
{
|
|
typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
|
|
min_allocator<std::pair<const int, std::string>>> C;
|
|
typedef std::pair<int, std::string> P;
|
|
P a[] =
|
|
{
|
|
P(10, "ten"),
|
|
P(20, "twenty"),
|
|
P(30, "thirty"),
|
|
P(40, "fourty"),
|
|
P(50, "fifty"),
|
|
P(60, "sixty"),
|
|
P(70, "seventy"),
|
|
P(80, "eighty"),
|
|
};
|
|
const C c(std::begin(a), std::end(a));
|
|
assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
|
|
}
|
|
{
|
|
typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
|
|
min_allocator<std::pair<const int, std::string>>> C;
|
|
typedef std::pair<int, std::string> P;
|
|
const C c;
|
|
assert(c.load_factor() == 0);
|
|
}
|
|
#endif
|
|
}
|