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
|
/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _SPRING_HASH_H_
#define _SPRING_HASH_H_
#include "Sync/HsiehHash.h"
#include <string>
namespace spring {
template<typename T>
struct synced_hash {
std::uint32_t operator()(const T& s) const;
};
#define SpringDefaultHash(T) \
template<> \
struct synced_hash<T> \
{ \
std::uint32_t operator()(const T& t) const { \
return static_cast<std::uint32_t>(t); \
} \
};
SpringDefaultHash(std::int8_t)
SpringDefaultHash(std::uint8_t)
SpringDefaultHash(std::int16_t)
SpringDefaultHash(std::uint16_t)
SpringDefaultHash(std::int32_t)
SpringDefaultHash(std::uint32_t)
#undef SpringDefaultHash
template<>
struct synced_hash<std::int64_t> {
public:
std::uint32_t operator()(const std::int64_t& i) const
{
return static_cast<std::uint32_t>(i) ^ static_cast<std::uint32_t>(i >> 32);
}
};
template<>
struct synced_hash<std::uint64_t> {
public:
std::uint32_t operator()(const std::int64_t& i) const
{
return static_cast<std::uint32_t>(i) ^ static_cast<std::uint32_t>(i >> 32);
}
};
template<>
struct synced_hash<std::string> {
public:
std::uint32_t operator()(const std::string& s) const
{
return HsiehHash(&s.data()[0], s.size(), 0);
}
};
}
#endif //_SPRING_HASH_H_
|
