TrinityCore
BigNumber.h
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1/*
2 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
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16 */
17
18#ifndef _AUTH_BIGNUMBER_H
19#define _AUTH_BIGNUMBER_H
20
21#include "Define.h"
22#include <array>
23#include <memory>
24#include <string>
25#include <vector>
26
27struct bignum_st;
28
30{
31 public:
32 BigNumber();
33 BigNumber(BigNumber const& bn);
34 BigNumber(uint32 v) : BigNumber() { SetDword(v); }
35 BigNumber(int32 v) : BigNumber() { SetDword(v); }
36 BigNumber(std::string const& v) : BigNumber() { SetHexStr(v); }
37 BigNumber(std::vector<uint8> const& v, bool littleEndian = true) : BigNumber() { SetBinary(v.data(), v.size(), littleEndian); }
38 template <size_t Size>
39 BigNumber(std::array<uint8, Size> const& v, bool littleEndian = true) : BigNumber() { SetBinary(v.data(), Size, littleEndian); }
40
41 ~BigNumber();
42
43 void SetDword(int32);
44 void SetDword(uint32);
45 void SetQword(uint64);
46 void SetBinary(uint8 const* bytes, int32 len, bool littleEndian = true);
47 template <typename Container>
48 auto SetBinary(Container const& c, bool littleEndian = true) -> std::enable_if_t<!std::is_pointer_v<std::decay_t<Container>>> { SetBinary(std::data(c), std::size(c), littleEndian); }
49 bool SetHexStr(char const* str);
50 bool SetHexStr(std::string const& str) { return SetHexStr(str.c_str()); }
51
52 void SetRand(int32 numbits);
53
54 BigNumber& operator=(BigNumber const& bn);
55
56 BigNumber& operator+=(BigNumber const& bn);
57 BigNumber operator+(BigNumber const& bn) const
58 {
59 BigNumber t(*this);
60 return t += bn;
61 }
62
63 BigNumber& operator-=(BigNumber const& bn);
64 BigNumber operator-(BigNumber const& bn) const
65 {
66 BigNumber t(*this);
67 return t -= bn;
68 }
69
70 BigNumber& operator*=(BigNumber const& bn);
71 BigNumber operator*(BigNumber const& bn) const
72 {
73 BigNumber t(*this);
74 return t *= bn;
75 }
76
77 BigNumber& operator/=(BigNumber const& bn);
78 BigNumber operator/(BigNumber const& bn) const
79 {
80 BigNumber t(*this);
81 return t /= bn;
82 }
83
84 BigNumber& operator%=(BigNumber const& bn);
85 BigNumber operator%(BigNumber const& bn) const
86 {
87 BigNumber t(*this);
88 return t %= bn;
89 }
90
91 BigNumber& operator<<=(int n);
92 BigNumber operator<<(int n) const
93 {
94 BigNumber t(*this);
95 return t <<= n;
96 }
97
98 int32 CompareTo(BigNumber const& bn) const;
99 bool operator==(BigNumber const& bn) const { return CompareTo(bn) == 0; }
100 std::strong_ordering operator<=>(BigNumber const& other) const
101 {
102 int32 cmp = CompareTo(other);
103 if (cmp < 0)
104 return std::strong_ordering::less;
105 if (cmp > 0)
106 return std::strong_ordering::greater;
107 return std::strong_ordering::equal;
108 }
109
110 bool IsZero() const;
111 bool IsNegative() const;
112
113 BigNumber ModExp(BigNumber const& bn1, BigNumber const& bn2) const;
114 BigNumber Exp(BigNumber const&) const;
115
116 int32 GetNumBytes() const;
117 int32 GetNumBits() const;
118
119 struct bignum_st* BN() { return _bn; }
120 struct bignum_st const* BN() const { return _bn; }
121
122 uint32 AsDword() const;
123
124 void GetBytes(uint8* buf, size_t bufsize, bool littleEndian = true) const;
125 std::vector<uint8> ToByteVector(int32 minSize = 0, bool littleEndian = true) const;
126
127 template <std::size_t Size>
128 std::array<uint8, Size> ToByteArray(bool littleEndian = true) const
129 {
130 std::array<uint8, Size> buf;
131 GetBytes(buf.data(), Size, littleEndian);
132 return buf;
133 }
134
135 std::string AsHexStr() const;
136 std::string AsDecStr() const;
137
138 private:
139 struct bignum_st* _bn;
140
141};
142#endif
uint8_t uint8
Definition: Define.h:144
#define TC_COMMON_API
Definition: Define.h:99
int32_t int32
Definition: Define.h:138
uint64_t uint64
Definition: Define.h:141
uint32_t uint32
Definition: Define.h:142
struct bignum_st * BN()
Definition: BigNumber.h:119
BigNumber(std::array< uint8, Size > const &v, bool littleEndian=true)
Definition: BigNumber.h:39
std::array< uint8, Size > ToByteArray(bool littleEndian=true) const
Definition: BigNumber.h:128
BigNumber(uint32 v)
Definition: BigNumber.h:34
BigNumber(int32 v)
Definition: BigNumber.h:35
BigNumber operator*(BigNumber const &bn) const
Definition: BigNumber.h:71
BigNumber operator-(BigNumber const &bn) const
Definition: BigNumber.h:64
struct bignum_st const * BN() const
Definition: BigNumber.h:120
BigNumber operator%(BigNumber const &bn) const
Definition: BigNumber.h:85
BigNumber operator+(BigNumber const &bn) const
Definition: BigNumber.h:57
auto SetBinary(Container const &c, bool littleEndian=true) -> std::enable_if_t<!std::is_pointer_v< std::decay_t< Container > > >
Definition: BigNumber.h:48
struct bignum_st * _bn
Definition: BigNumber.h:139
bool SetHexStr(std::string const &str)
Definition: BigNumber.h:50
BigNumber(std::string const &v)
Definition: BigNumber.h:36
BigNumber operator/(BigNumber const &bn) const
Definition: BigNumber.h:78
std::strong_ordering operator<=>(BigNumber const &other) const
Definition: BigNumber.h:100
BigNumber operator<<(int n) const
Definition: BigNumber.h:92
bool operator==(BigNumber const &bn) const
Definition: BigNumber.h:99
BigNumber(std::vector< uint8 > const &v, bool littleEndian=true)
Definition: BigNumber.h:37
bool Size(ContainerUnorderedMap< TypeList< H, T >, KEY_TYPE > const &elements, std::size_t *size, SPECIFIC_TYPE *obj)
constexpr std::size_t size()
Definition: UpdateField.h:796