diff options
Diffstat (limited to 'src/uint256.h')
-rw-r--r-- | src/uint256.h | 765 |
1 files changed, 765 insertions, 0 deletions
diff --git a/src/uint256.h b/src/uint256.h new file mode 100644 index 0000000000..14feb1683d --- /dev/null +++ b/src/uint256.h @@ -0,0 +1,765 @@ +// Copyright (c) 2009-2010 Satoshi Nakamoto +// Distributed under the MIT/X11 software license, see the accompanying +// file license.txt or http://www.opensource.org/licenses/mit-license.php. +#ifndef BITCOIN_UINT256_H +#define BITCOIN_UINT256_H + +#include "serialize.h" + +#include <limits.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 + + +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 +template<unsigned int BITS> +class base_uint +{ +protected: + enum { WIDTH=BITS/32 }; + unsigned int pn[WIDTH]; +public: + + bool operator!() const + { + for (int i = 0; i < WIDTH; i++) + if (pn[i] != 0) + return false; + return true; + } + + const base_uint operator~() const + { + base_uint ret; + for (int i = 0; i < WIDTH; i++) + ret.pn[i] = ~pn[i]; + return ret; + } + + const base_uint operator-() const + { + base_uint ret; + for (int i = 0; i < WIDTH; i++) + ret.pn[i] = ~pn[i]; + ret++; + return ret; + } + + + base_uint& 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; + } + + base_uint& operator^=(const base_uint& b) + { + for (int i = 0; i < WIDTH; i++) + pn[i] ^= b.pn[i]; + return *this; + } + + base_uint& operator&=(const base_uint& b) + { + for (int i = 0; i < WIDTH; i++) + pn[i] &= b.pn[i]; + return *this; + } + + base_uint& operator|=(const base_uint& b) + { + for (int i = 0; i < WIDTH; i++) + pn[i] |= b.pn[i]; + return *this; + } + + base_uint& operator^=(uint64 b) + { + pn[0] ^= (unsigned int)b; + pn[1] ^= (unsigned int)(b >> 32); + return *this; + } + + base_uint& operator&=(uint64 b) + { + pn[0] &= (unsigned int)b; + pn[1] &= (unsigned int)(b >> 32); + return *this; + } + + base_uint& operator|=(uint64 b) + { + pn[0] |= (unsigned int)b; + pn[1] |= (unsigned int)(b >> 32); + return *this; + } + + base_uint& operator<<=(unsigned int shift) + { + base_uint a(*this); + for (int i = 0; i < WIDTH; i++) + pn[i] = 0; + int k = shift / 32; + shift = shift % 32; + for (int i = 0; i < WIDTH; i++) + { + if (i+k+1 < WIDTH && shift != 0) + pn[i+k+1] |= (a.pn[i] >> (32-shift)); + if (i+k < WIDTH) + pn[i+k] |= (a.pn[i] << shift); + } + return *this; + } + + base_uint& operator>>=(unsigned int shift) + { + base_uint a(*this); + for (int i = 0; i < WIDTH; i++) + pn[i] = 0; + int k = shift / 32; + shift = shift % 32; + for (int i = 0; i < WIDTH; i++) + { + if (i-k-1 >= 0 && shift != 0) + pn[i-k-1] |= (a.pn[i] << (32-shift)); + if (i-k >= 0) + pn[i-k] |= (a.pn[i] >> shift); + } + return *this; + } + + base_uint& operator+=(const base_uint& b) + { + uint64 carry = 0; + for (int i = 0; i < WIDTH; i++) + { + uint64 n = carry + pn[i] + b.pn[i]; + pn[i] = n & 0xffffffff; + carry = n >> 32; + } + return *this; + } + + base_uint& operator-=(const base_uint& b) + { + *this += -b; + return *this; + } + + base_uint& operator+=(uint64 b64) + { + base_uint b; + b = b64; + *this += b; + return *this; + } + + base_uint& operator-=(uint64 b64) + { + base_uint b; + b = b64; + *this += -b; + return *this; + } + + + base_uint& operator++() + { + // prefix operator + int i = 0; + while (++pn[i] == 0 && i < WIDTH-1) + i++; + return *this; + } + + const base_uint operator++(int) + { + // postfix operator + const base_uint ret = *this; + ++(*this); + return ret; + } + + base_uint& operator--() + { + // prefix operator + int i = 0; + while (--pn[i] == -1 && i < WIDTH-1) + i++; + return *this; + } + + const base_uint operator--(int) + { + // postfix operator + const base_uint ret = *this; + --(*this); + return ret; + } + + + friend inline bool operator<(const base_uint& a, const base_uint& b) + { + for (int i = base_uint::WIDTH-1; i >= 0; i--) + { + if (a.pn[i] < b.pn[i]) + return true; + else if (a.pn[i] > b.pn[i]) + return false; + } + return false; + } + + friend inline bool operator<=(const base_uint& a, const base_uint& b) + { + for (int i = base_uint::WIDTH-1; i >= 0; i--) + { + if (a.pn[i] < b.pn[i]) + return true; + else if (a.pn[i] > b.pn[i]) + return false; + } + return true; + } + + friend inline bool operator>(const base_uint& a, const base_uint& b) + { + for (int i = base_uint::WIDTH-1; i >= 0; i--) + { + if (a.pn[i] > b.pn[i]) + return true; + else if (a.pn[i] < b.pn[i]) + return false; + } + return false; + } + + friend inline bool operator>=(const base_uint& a, const base_uint& b) + { + for (int i = base_uint::WIDTH-1; i >= 0; i--) + { + if (a.pn[i] > b.pn[i]) + return true; + else if (a.pn[i] < b.pn[i]) + return false; + } + return true; + } + + friend inline bool operator==(const base_uint& a, const base_uint& b) + { + for (int i = 0; i < base_uint::WIDTH; i++) + if (a.pn[i] != b.pn[i]) + return false; + return true; + } + + friend inline bool operator==(const base_uint& a, uint64 b) + { + if (a.pn[0] != (unsigned int)b) + return false; + if (a.pn[1] != (unsigned int)(b >> 32)) + return false; + for (int i = 2; i < base_uint::WIDTH; i++) + if (a.pn[i] != 0) + return false; + return true; + } + + friend inline bool operator!=(const base_uint& a, const base_uint& b) + { + return (!(a == b)); + } + + friend inline bool operator!=(const base_uint& a, uint64 b) + { + return (!(a == b)); + } + + + + std::string GetHex() const + { + char psz[sizeof(pn)*2 + 1]; + for (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); + } + + void SetHex(const char* psz) + { + for (int i = 0; i < WIDTH; i++) + pn[i] = 0; + + // skip leading spaces + while (isspace(*psz)) + psz++; + + // skip 0x + if (psz[0] == '0' && tolower(psz[1]) == 'x') + 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 }; + const char* pbegin = psz; + while (phexdigit[*psz] || *psz == '0') + psz++; + psz--; + unsigned char* p1 = (unsigned char*)pn; + unsigned char* pend = p1 + WIDTH * 4; + while (psz >= pbegin && p1 < pend) + { + *p1 = phexdigit[(unsigned char)*psz--]; + if (psz >= pbegin) + { + *p1 |= (phexdigit[(unsigned char)*psz--] << 4); + p1++; + } + } + } + + void SetHex(const std::string& str) + { + SetHex(str.c_str()); + } + + std::string ToString() const + { + return (GetHex()); + } + + unsigned char* begin() + { + return (unsigned char*)&pn[0]; + } + + unsigned char* end() + { + return (unsigned char*)&pn[WIDTH]; + } + + unsigned int size() + { + return sizeof(pn); + } + + + unsigned int GetSerializeSize(int nType=0, int nVersion=VERSION) const + { + return sizeof(pn); + } + + template<typename Stream> + void Serialize(Stream& s, int nType=0, int nVersion=VERSION) const + { + s.write((char*)pn, sizeof(pn)); + } + + template<typename Stream> + void Unserialize(Stream& s, int nType=0, int nVersion=VERSION) + { + 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 +// + +class uint160 : public 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; + } +}; + +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 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; } +inline const uint160 operator>>(const uint160& a, unsigned int shift) { return uint160(a) >>= shift; } + +inline const uint160 operator^(const base_uint160& a, const base_uint160& b) { return uint160(a) ^= b; } +inline const uint160 operator&(const base_uint160& a, const base_uint160& b) { return uint160(a) &= b; } +inline const uint160 operator|(const base_uint160& a, const base_uint160& b) { return uint160(a) |= b; } +inline const uint160 operator+(const base_uint160& a, const base_uint160& b) { return uint160(a) += b; } +inline const uint160 operator-(const base_uint160& a, const base_uint160& b) { return uint160(a) -= b; } + +inline bool operator<(const base_uint160& a, const uint160& b) { return (base_uint160)a < (base_uint160)b; } +inline bool operator<=(const base_uint160& a, const uint160& b) { return (base_uint160)a <= (base_uint160)b; } +inline bool operator>(const base_uint160& a, const uint160& b) { return (base_uint160)a > (base_uint160)b; } +inline bool operator>=(const base_uint160& a, const uint160& b) { return (base_uint160)a >= (base_uint160)b; } +inline bool operator==(const base_uint160& a, const uint160& b) { return (base_uint160)a == (base_uint160)b; } +inline bool operator!=(const base_uint160& a, const uint160& b) { return (base_uint160)a != (base_uint160)b; } +inline const uint160 operator^(const base_uint160& a, const uint160& b) { return (base_uint160)a ^ (base_uint160)b; } +inline const uint160 operator&(const base_uint160& a, const uint160& b) { return (base_uint160)a & (base_uint160)b; } +inline const uint160 operator|(const base_uint160& a, const uint160& b) { return (base_uint160)a | (base_uint160)b; } +inline const uint160 operator+(const base_uint160& a, const uint160& b) { return (base_uint160)a + (base_uint160)b; } +inline const uint160 operator-(const base_uint160& a, const uint160& b) { return (base_uint160)a - (base_uint160)b; } + +inline bool operator<(const uint160& a, const base_uint160& b) { return (base_uint160)a < (base_uint160)b; } +inline bool operator<=(const uint160& a, const base_uint160& b) { return (base_uint160)a <= (base_uint160)b; } +inline bool operator>(const uint160& a, const base_uint160& b) { return (base_uint160)a > (base_uint160)b; } +inline bool operator>=(const uint160& a, const base_uint160& b) { return (base_uint160)a >= (base_uint160)b; } +inline bool operator==(const uint160& a, const base_uint160& b) { return (base_uint160)a == (base_uint160)b; } +inline bool operator!=(const uint160& a, const base_uint160& b) { return (base_uint160)a != (base_uint160)b; } +inline const uint160 operator^(const uint160& a, const base_uint160& b) { return (base_uint160)a ^ (base_uint160)b; } +inline const uint160 operator&(const uint160& a, const base_uint160& b) { return (base_uint160)a & (base_uint160)b; } +inline const uint160 operator|(const uint160& a, const base_uint160& b) { return (base_uint160)a | (base_uint160)b; } +inline const uint160 operator+(const uint160& a, const base_uint160& b) { return (base_uint160)a + (base_uint160)b; } +inline const uint160 operator-(const uint160& a, const base_uint160& b) { return (base_uint160)a - (base_uint160)b; } + +inline bool operator<(const uint160& a, const uint160& b) { return (base_uint160)a < (base_uint160)b; } +inline bool operator<=(const uint160& a, const uint160& b) { return (base_uint160)a <= (base_uint160)b; } +inline bool operator>(const uint160& a, const uint160& b) { return (base_uint160)a > (base_uint160)b; } +inline bool operator>=(const uint160& a, const uint160& b) { return (base_uint160)a >= (base_uint160)b; } +inline bool operator==(const uint160& a, const uint160& b) { return (base_uint160)a == (base_uint160)b; } +inline bool operator!=(const uint160& a, const uint160& b) { return (base_uint160)a != (base_uint160)b; } +inline const uint160 operator^(const uint160& a, const uint160& b) { return (base_uint160)a ^ (base_uint160)b; } +inline const uint160 operator&(const uint160& a, const uint160& b) { return (base_uint160)a & (base_uint160)b; } +inline const uint160 operator|(const uint160& a, const uint160& b) { return (base_uint160)a | (base_uint160)b; } +inline const uint160 operator+(const uint160& a, const uint160& b) { return (base_uint160)a + (base_uint160)b; } +inline const uint160 operator-(const uint160& a, const uint160& b) { return (base_uint160)a - (base_uint160)b; } + + + + + + +////////////////////////////////////////////////////////////////////////////// +// +// uint256 +// + +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; + } +}; + +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 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, 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 bool operator<(const base_uint256& a, const uint256& b) { return (base_uint256)a < (base_uint256)b; } +inline bool operator<=(const base_uint256& a, const uint256& b) { return (base_uint256)a <= (base_uint256)b; } +inline bool operator>(const base_uint256& a, const uint256& b) { return (base_uint256)a > (base_uint256)b; } +inline bool operator>=(const base_uint256& a, const uint256& b) { return (base_uint256)a >= (base_uint256)b; } +inline bool operator==(const base_uint256& a, const uint256& b) { return (base_uint256)a == (base_uint256)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 bool operator<(const uint256& a, const base_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 bool operator>(const uint256& a, const base_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 bool operator==(const uint256& a, const base_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 base_uint256& b) { return (base_uint256)a ^ (base_uint256)b; } +inline const uint256 operator&(const uint256& a, const base_uint256& b) { return (base_uint256)a & (base_uint256)b; } +inline const uint256 operator|(const uint256& a, const base_uint256& b) { return (base_uint256)a | (base_uint256)b; } +inline const uint256 operator+(const uint256& a, const base_uint256& b) { return (base_uint256)a + (base_uint256)b; } +inline const uint256 operator-(const uint256& a, const base_uint256& b) { return (base_uint256)a - (base_uint256)b; } + +inline bool operator<(const uint256& a, const uint256& b) { return (base_uint256)a < (base_uint256)b; } +inline bool operator<=(const uint256& a, const uint256& b) { return (base_uint256)a <= (base_uint256)b; } +inline bool operator>(const uint256& a, const uint256& b) { return (base_uint256)a > (base_uint256)b; } +inline bool operator>=(const uint256& a, const uint256& b) { return (base_uint256)a >= (base_uint256)b; } +inline bool operator==(const uint256& a, const uint256& b) { return (base_uint256)a == (base_uint256)b; } +inline bool 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 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 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 |