// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2011 The Bitcoin developers
+// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_UINT256_H
#define BITCOIN_UINT256_H
-#include "serialize.h"
-
#include <limits.h>
+#include <stdio.h>
+#include <string.h>
#include <string>
#include <vector>
-
-#if defined(_MSC_VER) || defined(__BORLANDC__)
-typedef __int64 int64;
-typedef unsigned __int64 uint64;
-#else
-typedef long long int64;
-typedef unsigned long long uint64;
-#endif
-#if defined(_MSC_VER) && _MSC_VER < 1300
-#define for if (false) ; else for
-#endif
-
+#include <stdint.h>
inline int Testuint256AdHoc(std::vector<std::string> vArg);
-// We have to keep a separate base class without constructors
-// so the compiler will let us use it in a union
+/** Base class without constructors for uint256 and uint160.
+ * This makes the compiler let u use it in a union.
+ */
template<unsigned int BITS>
class base_uint
{
protected:
enum { WIDTH=BITS/32 };
- unsigned int pn[WIDTH];
+ uint32_t pn[WIDTH];
public:
bool operator!() const
return ret;
}
+ double getdouble() const
+ {
+ double ret = 0.0;
+ double fact = 1.0;
+ for (int i = 0; i < WIDTH; i++) {
+ ret += fact * pn[i];
+ fact *= 4294967296.0;
+ }
+ 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 (int i = 0; i < sizeof(pn); i++)
+ 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);
}
psz += 2;
// hex string to uint
- static char phexdigit[256] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, 0,0xa,0xb,0xc,0xd,0xe,0xf,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0xa,0xb,0xc,0xd,0xe,0xf,0,0,0,0,0,0,0,0,0 };
+ static const unsigned char phexdigit[256] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, 0,0xa,0xb,0xc,0xd,0xe,0xf,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0xa,0xb,0xc,0xd,0xe,0xf,0,0,0,0,0,0,0,0,0 };
const char* pbegin = psz;
while (phexdigit[(unsigned char)*psz] || *psz == '0')
psz++;
return (unsigned char*)&pn[WIDTH];
}
- unsigned int size()
+ std::vector<unsigned char> getBytes()
+ {
+ return std::vector<unsigned char>(begin(), end());
+ }
+
+ size_t size()
{
return sizeof(pn);
}
+ 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[n];
+ }
- unsigned int GetSerializeSize(int nType=0, int nVersion=VERSION) const
+ unsigned int GetSerializeSize(int nType, int nVersion) const
{
return sizeof(pn);
}
template<typename Stream>
- void Serialize(Stream& s, int nType=0, int nVersion=VERSION) const
+ void Serialize(Stream& s, int nType, int nVersion) const
{
s.write((char*)pn, sizeof(pn));
}
template<typename Stream>
- void Unserialize(Stream& s, int nType=0, int nVersion=VERSION)
+ void Unserialize(Stream& s, int nType, int nVersion)
{
s.read((char*)pn, sizeof(pn));
}
-
friend class uint160;
friend class uint256;
friend inline int Testuint256AdHoc(std::vector<std::string> vArg);
typedef base_uint<160> base_uint160;
typedef base_uint<256> base_uint256;
-
-
//
// uint160 and uint256 could be implemented as templates, but to keep
// compile errors and debugging cleaner, they're copy and pasted.
// uint160
//
+/** 160-bit unsigned integer */
class uint160 : public base_uint160
{
public:
return *this;
}
- uint160(uint64 b)
+ uint160(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;
}
- uint160& operator=(uint64 b)
+ uint160& 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;
}
};
-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
//
+/** 256-bit unsigned integer */
class uint256 : public base_uint256
{
public:
return *this;
}
- uint256(uint64 b)
+ uint256(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;
}
- uint256& operator=(uint64 b)
+ uint256& 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;
}
};
-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 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; }
-
-
-
-
-
-
-
-
-
-
-
-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
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