#ifndef BITCOIN_UINT256_H
#define BITCOIN_UINT256_H
-#include <limits.h>
-#include <stdio.h>
-#include <string.h>
+#include <limits>
#include <string>
#include <vector>
-
-typedef long long int64;
-typedef unsigned long long uint64;
-
-
-inline int Testuint256AdHoc(std::vector<std::string> vArg);
-
+#include <iomanip>
+#include <sstream>
/** Base class without constructors for uint256 and uint160.
{
protected:
enum { WIDTH=BITS/32 };
- unsigned int pn[WIDTH];
+ uint32_t pn[WIDTH];
public:
+ const base_uint max()
+ {
+ base_uint ret;
+ for (int i = 0; i < WIDTH; i++)
+ ret.pn[i] = std::numeric_limits<uint32_t>::max();
+ return ret;
+ }
+
bool operator!() const
{
for (int i = 0; i < WIDTH; i++)
return ret;
}
- base_uint& operator=(uint64 b)
+ base_uint& operator=(uint64_t b)
{
- pn[0] = (unsigned int)b;
- pn[1] = (unsigned int)(b >> 32);
+ pn[0] = (uint32_t)b;
+ pn[1] = (uint32_t)(b >> 32);
for (int i = 2; i < WIDTH; i++)
pn[i] = 0;
return *this;
return *this;
}
- base_uint& operator^=(uint64 b)
+ base_uint& operator^=(uint64_t b)
{
- pn[0] ^= (unsigned int)b;
- pn[1] ^= (unsigned int)(b >> 32);
+ pn[0] ^= (uint32_t)b;
+ pn[1] ^= (uint32_t)(b >> 32);
return *this;
}
- base_uint& operator|=(uint64 b)
+ base_uint& operator|=(uint64_t b)
{
- pn[0] |= (unsigned int)b;
- pn[1] |= (unsigned int)(b >> 32);
+ pn[0] |= (uint32_t)b;
+ pn[1] |= (uint32_t)(b >> 32);
return *this;
}
base_uint& operator+=(const base_uint& b)
{
- uint64 carry = 0;
+ uint64_t carry = 0;
for (int i = 0; i < WIDTH; i++)
{
- uint64 n = carry + pn[i] + b.pn[i];
+ uint64_t n = carry + pn[i] + b.pn[i];
pn[i] = n & 0xffffffff;
carry = n >> 32;
}
return *this;
}
- base_uint& operator+=(uint64 b64)
+ base_uint& operator+=(uint64_t b64)
{
base_uint b;
b = b64;
return *this;
}
- base_uint& operator-=(uint64 b64)
+ base_uint& operator-=(uint64_t b64)
{
base_uint b;
b = b64;
return true;
}
- friend inline bool operator==(const base_uint& a, uint64 b)
+ friend inline bool operator==(const base_uint& a, uint64_t b)
{
- if (a.pn[0] != (unsigned int)b)
+ if (a.pn[0] != (uint32_t)b)
return false;
- if (a.pn[1] != (unsigned int)(b >> 32))
+ if (a.pn[1] != (uint32_t)(b >> 32))
return false;
for (int i = 2; i < base_uint::WIDTH; i++)
if (a.pn[i] != 0)
return (!(a == b));
}
- friend inline bool operator!=(const base_uint& a, uint64 b)
+ friend inline bool operator!=(const base_uint& a, uint64_t b)
{
return (!(a == b));
}
-
-
std::string GetHex() const
{
- char psz[sizeof(pn)*2 + 1];
- for (unsigned int i = 0; i < sizeof(pn); i++)
- sprintf(psz + i*2, "%02x", ((unsigned char*)pn)[sizeof(pn) - i - 1]);
- return std::string(psz, psz + sizeof(pn)*2);
+ std::stringstream ss;
+ size_t pn_size = sizeof(pn) / sizeof(pn[0]);
+ for (size_t i = 1; i <= pn_size; i++)
+ ss << std::setfill('0') << std::setw(8) << std::setbase(16) << pn[pn_size-i];
+ return ss.str();
}
void SetHex(const char* psz)
return (GetHex());
}
- unsigned char* begin()
+ unsigned char* begin() const
{
return (unsigned char*)&pn[0];
}
- unsigned char* end()
+ unsigned char* end() const
{
return (unsigned char*)&pn[WIDTH];
}
- unsigned int size()
+ std::vector<unsigned char> getBytes()
+ {
+ return std::vector<unsigned char>(begin(), end());
+ }
+
+ size_t size() const
{
return sizeof(pn);
}
- uint64 Get64(int n=0) const
+ uint64_t Get64(int n=0) const
+ {
+ return pn[2*n] | (uint64_t)pn[2*n+1] << 32;
+ }
+
+ uint32_t Get32(int n=0) const
{
- return pn[2*n] | (uint64)pn[2*n+1] << 32;
+ return pn[n];
}
unsigned int GetSerializeSize(int nType, int nVersion) const
return sizeof(pn);
}
+ unsigned int bits() const
+ {
+ for (int pos = WIDTH - 1; pos >= 0; pos--) {
+ if (pn[pos]) {
+ for (int bits = 31; bits > 0; bits--) {
+ if (pn[pos] & 1 << bits)
+ return 32 * pos + bits + 1;
+ }
+ return 32 * pos + 1;
+ }
+ }
+ return 0;
+ }
+
template<typename Stream>
void Serialize(Stream& s, int nType, int nVersion) const
{
friend class uint160;
friend class uint256;
- friend inline int Testuint256AdHoc(std::vector<std::string> vArg);
};
typedef base_uint<160> base_uint160;
public:
typedef base_uint160 basetype;
- uint160()
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = 0;
- }
-
- uint160(const basetype& b)
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = b.pn[i];
- }
-
- uint160& operator=(const basetype& b)
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = b.pn[i];
- return *this;
- }
-
- uint160(uint64 b)
- {
- pn[0] = (unsigned int)b;
- pn[1] = (unsigned int)(b >> 32);
- for (int i = 2; i < WIDTH; i++)
- pn[i] = 0;
- }
-
- uint160& operator=(uint64 b)
- {
- pn[0] = (unsigned int)b;
- pn[1] = (unsigned int)(b >> 32);
- for (int i = 2; i < WIDTH; i++)
- pn[i] = 0;
- return *this;
- }
-
- explicit uint160(const std::string& str)
- {
- SetHex(str);
- }
-
- explicit uint160(const std::vector<unsigned char>& vch)
- {
- if (vch.size() == sizeof(pn))
- memcpy(pn, &vch[0], sizeof(pn));
- else
- *this = 0;
- }
+ uint160();
+ uint160(const basetype& b);
+ uint160& operator=(const basetype& b);
+ uint160(uint64_t b);
+ uint160& operator=(uint64_t b);
+ explicit uint160(const std::string& str);
+ explicit uint160(const std::vector<unsigned char>& vch);
};
-inline bool operator==(const uint160& a, uint64 b) { return (base_uint160)a == b; }
-inline bool operator!=(const uint160& a, uint64 b) { return (base_uint160)a != b; }
+inline bool operator==(const uint160& a, uint64_t b) { return (base_uint160)a == b; }
+inline bool operator!=(const uint160& a, uint64_t b) { return (base_uint160)a != b; }
inline const uint160 operator<<(const base_uint160& a, unsigned int shift) { return uint160(a) <<= shift; }
inline const uint160 operator>>(const base_uint160& a, unsigned int shift) { return uint160(a) >>= shift; }
inline const uint160 operator<<(const uint160& a, unsigned int shift) { return uint160(a) <<= shift; }
// uint256
//
+
+/** Errors thrown by the uint256 class */
+class uint256_error : public std::exception
+{
+public:
+ explicit uint256_error(const std::string& error_message) : what_(error_message) {}
+
+ virtual const char* what() const throw () { return what_.c_str(); }
+ virtual ~uint256_error() throw () {}
+private:
+ std::string what_;
+};
+
/** 256-bit unsigned integer */
class uint256 : public base_uint256
{
public:
typedef base_uint256 basetype;
- uint256()
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = 0;
- }
-
- uint256(const basetype& b)
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = b.pn[i];
- }
-
- uint256& operator=(const basetype& b)
- {
- for (int i = 0; i < WIDTH; i++)
- pn[i] = b.pn[i];
- return *this;
- }
-
- uint256(uint64 b)
- {
- pn[0] = (unsigned int)b;
- pn[1] = (unsigned int)(b >> 32);
- for (int i = 2; i < WIDTH; i++)
- pn[i] = 0;
- }
-
- uint256& operator=(uint64 b)
- {
- pn[0] = (unsigned int)b;
- pn[1] = (unsigned int)(b >> 32);
- for (int i = 2; i < WIDTH; i++)
- pn[i] = 0;
- return *this;
- }
-
- explicit uint256(const std::string& str)
- {
- SetHex(str);
- }
-
- explicit uint256(const std::vector<unsigned char>& vch)
- {
- if (vch.size() == sizeof(pn))
- memcpy(pn, &vch[0], sizeof(pn));
- else
- *this = 0;
- }
+ uint256();
+ uint256(const basetype& b);
+ uint256& operator=(const basetype& b);
+ uint256(uint64_t b);
+ uint256& operator=(uint64_t b);
+ uint256& SetCompact(uint32_t nCompact, bool *pfNegative = NULL, bool *pfOverflow = NULL);
+ uint32_t GetCompact(bool fNegative = false) const;
+ uint256& operator*=(uint32_t b32);
+ uint256& operator*=(const uint256& b);
+ uint256& operator/=(const uint256& b);
+ explicit uint256(const std::string& str);
+ explicit uint256(const std::vector<unsigned char>& vch);
};
-inline bool operator==(const uint256& a, uint64 b) { return (base_uint256)a == b; }
-inline bool operator!=(const uint256& a, uint64 b) { return (base_uint256)a != b; }
+inline bool operator==(const uint256& a, uint64_t b) { return (base_uint256)a == b; }
+inline bool operator!=(const uint256& a, uint64_t b) { return (base_uint256)a != b; }
inline const uint256 operator<<(const base_uint256& a, unsigned int shift) { return uint256(a) <<= shift; }
inline const uint256 operator>>(const base_uint256& a, unsigned int shift) { return uint256(a) >>= shift; }
inline const uint256 operator<<(const uint256& a, unsigned int shift) { return uint256(a) <<= shift; }
inline const uint256 operator&(const base_uint256& a, const base_uint256& b) { return uint256(a) &= b; }
inline const uint256 operator|(const base_uint256& a, const base_uint256& b) { return uint256(a) |= b; }
inline const uint256 operator+(const base_uint256& a, const base_uint256& b) { return uint256(a) += b; }
+inline const uint256 operator*(const base_uint256& a, const base_uint256& b) { return uint256(a) *= b; }
+inline const uint256 operator/(const base_uint256& a, const base_uint256& b) { return uint256(a) /= b; }
inline const uint256 operator-(const base_uint256& a, const base_uint256& b) { return uint256(a) -= b; }
inline bool operator<(const base_uint256& a, const uint256& b) { return (base_uint256)a < (base_uint256)b; }
inline const uint256 operator&(const base_uint256& a, const uint256& b) { return (base_uint256)a & (base_uint256)b; }
inline const uint256 operator|(const base_uint256& a, const uint256& b) { return (base_uint256)a | (base_uint256)b; }
inline const uint256 operator+(const base_uint256& a, const uint256& b) { return (base_uint256)a + (base_uint256)b; }
+inline const uint256 operator*(const base_uint256& a, const uint256& b) { return (base_uint256)a * (base_uint256)b; }
+inline const uint256 operator/(const base_uint256& a, const uint256& b) { return (base_uint256)a / (base_uint256)b; }
inline const uint256 operator-(const base_uint256& a, const uint256& b) { return (base_uint256)a - (base_uint256)b; }
inline bool operator<(const uint256& a, const base_uint256& b) { return (base_uint256)a < (base_uint256)b; }
inline const uint256 operator+(const uint256& a, const uint256& b) { return (base_uint256)a + (base_uint256)b; }
inline const uint256 operator-(const uint256& a, const uint256& b) { return (base_uint256)a - (base_uint256)b; }
-
-
-
-
-
-
-
-
-
-#ifdef TEST_UINT256
-
-inline int Testuint256AdHoc(std::vector<std::string> vArg)
-{
- uint256 g(0);
-
-
- printf("%s\n", g.ToString().c_str());
- g--; printf("g--\n");
- printf("%s\n", g.ToString().c_str());
- g--; printf("g--\n");
- printf("%s\n", g.ToString().c_str());
- g++; printf("g++\n");
- printf("%s\n", g.ToString().c_str());
- g++; printf("g++\n");
- printf("%s\n", g.ToString().c_str());
- g++; printf("g++\n");
- printf("%s\n", g.ToString().c_str());
- g++; printf("g++\n");
- printf("%s\n", g.ToString().c_str());
-
-
-
- uint256 a(7);
- printf("a=7\n");
- printf("%s\n", a.ToString().c_str());
-
- uint256 b;
- printf("b undefined\n");
- printf("%s\n", b.ToString().c_str());
- int c = 3;
-
- a = c;
- a.pn[3] = 15;
- printf("%s\n", a.ToString().c_str());
- uint256 k(c);
-
- a = 5;
- a.pn[3] = 15;
- printf("%s\n", a.ToString().c_str());
- b = 1;
- b <<= 52;
-
- a |= b;
-
- a ^= 0x500;
-
- printf("a %s\n", a.ToString().c_str());
-
- a = a | b | (uint256)0x1000;
-
-
- printf("a %s\n", a.ToString().c_str());
- printf("b %s\n", b.ToString().c_str());
-
- a = 0xfffffffe;
- a.pn[4] = 9;
-
- printf("%s\n", a.ToString().c_str());
- a++;
- printf("%s\n", a.ToString().c_str());
- a++;
- printf("%s\n", a.ToString().c_str());
- a++;
- printf("%s\n", a.ToString().c_str());
- a++;
- printf("%s\n", a.ToString().c_str());
-
- a--;
- printf("%s\n", a.ToString().c_str());
- a--;
- printf("%s\n", a.ToString().c_str());
- a--;
- printf("%s\n", a.ToString().c_str());
- uint256 d = a--;
- printf("%s\n", d.ToString().c_str());
- printf("%s\n", a.ToString().c_str());
- a--;
- printf("%s\n", a.ToString().c_str());
- a--;
- printf("%s\n", a.ToString().c_str());
-
- d = a;
-
- printf("%s\n", d.ToString().c_str());
- for (int i = uint256::WIDTH-1; i >= 0; i--) printf("%08x", d.pn[i]); printf("\n");
-
- uint256 neg = d;
- neg = ~neg;
- printf("%s\n", neg.ToString().c_str());
-
-
- uint256 e = uint256("0xABCDEF123abcdef12345678909832180000011111111");
- printf("\n");
- printf("%s\n", e.ToString().c_str());
-
-
- printf("\n");
- uint256 x1 = uint256("0xABCDEF123abcdef12345678909832180000011111111");
- uint256 x2;
- printf("%s\n", x1.ToString().c_str());
- for (int i = 0; i < 270; i += 4)
- {
- x2 = x1 << i;
- printf("%s\n", x2.ToString().c_str());
- }
-
- printf("\n");
- printf("%s\n", x1.ToString().c_str());
- for (int i = 0; i < 270; i += 4)
- {
- x2 = x1;
- x2 >>= i;
- printf("%s\n", x2.ToString().c_str());
- }
-
-
- for (int i = 0; i < 100; i++)
- {
- uint256 k = (~uint256(0) >> i);
- printf("%s\n", k.ToString().c_str());
- }
-
- for (int i = 0; i < 100; i++)
- {
- uint256 k = (~uint256(0) << i);
- printf("%s\n", k.ToString().c_str());
- }
-
- return (0);
-}
-
-#endif
+uint256 GetRandHash();
#endif