You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
114 lines
2.5 KiB
C++
114 lines
2.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <functional>
|
|
|
|
// template <class T>
|
|
// struct hash
|
|
// : public unary_function<T, size_t>
|
|
// {
|
|
// size_t operator()(T val) const;
|
|
// };
|
|
|
|
#include <functional>
|
|
#include <cassert>
|
|
#include <type_traits>
|
|
#include <cstddef>
|
|
#include <limits>
|
|
|
|
#include "test_macros.h"
|
|
|
|
template <class T>
|
|
void
|
|
test()
|
|
{
|
|
typedef std::hash<T> H;
|
|
static_assert((std::is_same<typename H::argument_type, T>::value), "" );
|
|
static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
|
|
ASSERT_NOEXCEPT(H()(T()));
|
|
H h;
|
|
|
|
for (int i = 0; i <= 5; ++i)
|
|
{
|
|
T t(static_cast<T>(i));
|
|
const bool small = std::integral_constant<bool, sizeof(T) <= sizeof(std::size_t)>::value; // avoid compiler warnings
|
|
if (small)
|
|
{
|
|
const std::size_t result = h(t);
|
|
LIBCPP_ASSERT(result == static_cast<size_t>(t));
|
|
((void)result); // Prevent unused warning
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
test<bool>();
|
|
test<char>();
|
|
test<signed char>();
|
|
test<unsigned char>();
|
|
test<char16_t>();
|
|
test<char32_t>();
|
|
test<wchar_t>();
|
|
test<short>();
|
|
test<unsigned short>();
|
|
test<int>();
|
|
test<unsigned int>();
|
|
test<long>();
|
|
test<unsigned long>();
|
|
test<long long>();
|
|
test<unsigned long long>();
|
|
|
|
// LWG #2119
|
|
test<std::ptrdiff_t>();
|
|
test<size_t>();
|
|
|
|
test<int8_t>();
|
|
test<int16_t>();
|
|
test<int32_t>();
|
|
test<int64_t>();
|
|
|
|
test<int_fast8_t>();
|
|
test<int_fast16_t>();
|
|
test<int_fast32_t>();
|
|
test<int_fast64_t>();
|
|
|
|
test<int_least8_t>();
|
|
test<int_least16_t>();
|
|
test<int_least32_t>();
|
|
test<int_least64_t>();
|
|
|
|
test<intmax_t>();
|
|
test<intptr_t>();
|
|
|
|
test<uint8_t>();
|
|
test<uint16_t>();
|
|
test<uint32_t>();
|
|
test<uint64_t>();
|
|
|
|
test<uint_fast8_t>();
|
|
test<uint_fast16_t>();
|
|
test<uint_fast32_t>();
|
|
test<uint_fast64_t>();
|
|
|
|
test<uint_least8_t>();
|
|
test<uint_least16_t>();
|
|
test<uint_least32_t>();
|
|
test<uint_least64_t>();
|
|
|
|
test<uintmax_t>();
|
|
test<uintptr_t>();
|
|
|
|
#ifndef _LIBCPP_HAS_NO_INT128
|
|
test<__int128_t>();
|
|
test<__uint128_t>();
|
|
#endif
|
|
|
|
return 0;
|
|
}
|