bucket.pass.cpp
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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <unordered_set>
// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
// class Alloc = allocator<Value>>
// class unordered_multiset
// size_type bucket(const key_type& __k) const;
#ifdef _LIBCPP_DEBUG
#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
#endif
#include <unordered_set>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
int main(int, char**)
{
{
typedef std::unordered_multiset<int> C;
typedef int P;
P a[] =
{
P(1),
P(2),
P(3),
P(4),
P(1),
P(2)
};
const C c(std::begin(a), std::end(a));
size_t bc = c.bucket_count();
assert(bc >= 7);
for (size_t i = 0; i < 13; ++i)
LIBCPP_ASSERT(c.bucket(i) == i % bc);
}
#if TEST_STD_VER >= 11
{
typedef std::unordered_multiset<int, std::hash<int>,
std::equal_to<int>, min_allocator<int>> C;
typedef int P;
P a[] =
{
P(1),
P(2),
P(3),
P(4),
P(1),
P(2)
};
const C c(std::begin(a), std::end(a));
size_t bc = c.bucket_count();
assert(bc >= 7);
for (size_t i = 0; i < 13; ++i)
LIBCPP_ASSERT(c.bucket(i) == i % bc);
}
#endif
#if _LIBCPP_DEBUG_LEVEL >= 1
{
typedef std::unordered_multiset<int> C;
C c;
(void) c.bucket(3);
assert(false);
}
#endif
return 0;
}