6 #ifndef BITCOIN_ARITH_UINT256_H
7 #define BITCOIN_ARITH_UINT256_H
20 explicit uint_error(
const std::string& str) : std::runtime_error(str) {}
24 template<
unsigned int BITS>
34 for (
int i = 0; i <
WIDTH; i++)
40 for (
int i = 0; i <
WIDTH; i++)
46 for (
int i = 0; i <
WIDTH; i++)
53 pn[0] = (
unsigned int)b;
54 pn[1] = (
unsigned int)(b >> 32);
55 for (
int i = 2; i <
WIDTH; i++)
59 explicit base_uint(
const std::string& str);
63 for (
int i = 0; i <
WIDTH; i++)
72 for (
int i = 0; i <
WIDTH; i++)
80 for (
int i = 0; i <
WIDTH; i++)
90 pn[0] = (
unsigned int)b;
91 pn[1] = (
unsigned int)(b >> 32);
92 for (
int i = 2; i <
WIDTH; i++)
99 for (
int i = 0; i <
WIDTH; i++)
106 for (
int i = 0; i <
WIDTH; i++)
113 for (
int i = 0; i <
WIDTH; i++)
120 pn[0] ^= (
unsigned int)b;
121 pn[1] ^= (
unsigned int)(b >> 32);
127 pn[0] |= (
unsigned int)b;
128 pn[1] |= (
unsigned int)(b >> 32);
138 for (
int i = 0; i <
WIDTH; i++)
140 uint64_t n = carry +
pn[i] + b.
pn[i];
141 pn[i] = n & 0xffffffff;
177 while (++
pn[i] == 0 && i <
WIDTH-1)
194 while (--
pn[i] == (uint32_t)-1 && i <
WIDTH-1)
208 bool EqualTo(uint64_t b)
const;
229 std::string
GetHex()
const;
230 void SetHex(
const char* psz);
231 void SetHex(
const std::string& str);
243 unsigned int bits()
const;
248 return pn[0] | (uint64_t)
pn[1] << 32;
281 uint32_t
GetCompact(
bool fNegative =
false)
const;
arith_uint256 UintToArith256(const uint256 &)
uint256 ArithToUint256(const arith_uint256 &)
256-bit unsigned big integer.
arith_uint256(const std::string &str)
uint32_t GetCompact(bool fNegative=false) const
arith_uint256 & SetCompact(uint32_t nCompact, bool *pfNegative=NULL, bool *pfOverflow=NULL)
The "compact" format is a representation of a whole number N using an unsigned 32bit number similar t...
arith_uint256(uint64_t b)
arith_uint256(const base_uint< 256 > &b)
friend arith_uint256 UintToArith256(const uint256 &)
friend uint256 ArithToUint256(const arith_uint256 &)
Template base class for unsigned big integers.
base_uint & operator=(const base_uint &b)
base_uint & operator=(uint64_t b)
int CompareTo(const base_uint &b) const
base_uint & operator+=(uint64_t b64)
unsigned int size() const
const base_uint operator~() const
const base_uint operator++(int)
friend const base_uint operator/(const base_uint &a, const base_uint &b)
friend const base_uint operator*(const base_uint &a, uint32_t b)
const base_uint operator-() const
friend bool operator!=(const base_uint &a, const base_uint &b)
base_uint & operator^=(uint64_t b)
friend const base_uint operator-(const base_uint &a, const base_uint &b)
base_uint & operator>>=(unsigned int shift)
base_uint(const base_uint &b)
base_uint & operator&=(const base_uint &b)
const base_uint operator--(int)
friend const base_uint operator*(const base_uint &a, const base_uint &b)
friend const base_uint operator&(const base_uint &a, const base_uint &b)
friend bool operator<(const base_uint &a, const base_uint &b)
base_uint & operator-=(const base_uint &b)
base_uint & operator+=(const base_uint &b)
friend bool operator==(const base_uint &a, uint64_t b)
friend const base_uint operator>>(const base_uint &a, int shift)
friend bool operator>=(const base_uint &a, const base_uint &b)
base_uint & operator*=(uint32_t b32)
friend const base_uint operator^(const base_uint &a, const base_uint &b)
bool EqualTo(uint64_t b) const
friend bool operator==(const base_uint &a, const base_uint &b)
base_uint & operator|=(const base_uint &b)
friend const base_uint operator+(const base_uint &a, const base_uint &b)
base_uint & operator-=(uint64_t b64)
friend bool operator!=(const base_uint &a, uint64_t b)
friend bool operator>(const base_uint &a, const base_uint &b)
friend bool operator<=(const base_uint &a, const base_uint &b)
base_uint & operator|=(uint64_t b)
base_uint & operator<<=(unsigned int shift)
std::string ToString() const
friend const base_uint operator<<(const base_uint &a, int shift)
base_uint & operator^=(const base_uint &b)
base_uint & operator/=(const base_uint &b)
uint64_t GetLow64() const
void SetHex(const char *psz)
std::string GetHex() const
friend const base_uint operator|(const base_uint &a, const base_uint &b)
unsigned int bits() const
Returns the position of the highest bit set plus one, or zero if the value is zero.
uint_error(const std::string &str)