1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// Copyright 2005-2009 Daniel James.
// Copyright 2021 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/container_hash/hash.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/core/type_name.hpp>
#include <boost/type_traits/is_signed.hpp>
#include <boost/config.hpp>
#if defined(BOOST_MSVC)
#pragma warning(disable: 4127) // conditional expression is constant
#endif
// This test checks that small numbers hash to themselves even if
// their type is wider than size_t
template<class T>
void identity_test()
{
if( boost::is_signed<T>::value )
{
for( int i = -128; i <= 127; ++i )
{
BOOST_TEST_EQ( boost::hash<T>()( static_cast<T>( i ) ), static_cast<std::size_t>( i ) );
}
}
else
{
for( int i = 0; i <= 255; ++i )
{
BOOST_TEST_EQ( boost::hash<T>()( static_cast<T>( i ) ), static_cast<std::size_t>( i ) );
}
}
}
#define TEST(type) std::cerr << "Testing: " #type " (" << boost::core::type_name<type>() << ")\n"; identity_test<type>();
int main()
{
TEST(char)
TEST(signed char)
TEST(unsigned char)
#ifndef BOOST_NO_INTRINSIC_WCHAR_T
TEST(wchar_t)
#endif
#ifndef BOOST_NO_CXX11_CHAR16_T
TEST(char16_t)
#endif
#ifndef BOOST_NO_CXX11_CHAR32_T
TEST(char32_t)
#endif
TEST(short)
TEST(unsigned short)
TEST(int)
TEST(unsigned int)
TEST(long)
TEST(unsigned long)
#if !defined(BOOST_NO_LONG_LONG)
TEST(boost::long_long_type)
TEST(boost::ulong_long_type)
#endif
#if defined(BOOST_HAS_INT128)
TEST(boost::int128_type)
TEST(boost::uint128_type)
#endif
TEST(std::size_t)
TEST(std::ptrdiff_t)
return boost::report_errors();
}
|
