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dogecoin/src/uint256.h
Dwayne C. Litzenberger 8c8e8c2e93 Fix bugs on 'unsigned char' platforms. 
In ISO C++, the signedness of 'char' is undefined.  On some platforms (e.g.
ARM), 'char' is an unsigned type, but some of the code relies on 'char' being
signed (as it is on x86).  This is indicated by compiler warnings like this:

 bignum.h: In constructor 'CBigNum::CBigNum(char)':
 bignum.h:81:59: warning: comparison is always true due to limited range of data type [-Wtype-limits]

 util.cpp: In function 'bool IsHex(const string&)':
 util.cpp:427:28: warning: comparison is always false due to limited range of data type [-Wtype-limits]

In particular, IsHex erroneously returned true regardless of the input
characters, as long as the length of the string was a positive multiple of 2.

Note: For testing, it's possible using GCC to force char to be unsigned by
adding the -funsigned-char parameter to xCXXFLAGS.
2012-04-18 00:33:32 -04:00

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// 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.
#ifndef BITCOIN_UINT256_H
#define BITCOIN_UINT256_H
#include <limits.h>
#include <string.h>
#include <string>
#include <vector>
typedef long long int64;
typedef unsigned long long uint64;
inline int Testuint256AdHoc(std::vector<std::string> vArg);
/** 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];
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<<=(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 (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);
}
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 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++;
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);
}
uint64 Get64(int n=0) const
{
return pn[2*n] | (uint64)pn[2*n+1] << 32;
}
// unsigned int GetSerializeSize(int nType=0, int nVersion=PROTOCOL_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=PROTOCOL_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=PROTOCOL_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:
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
//
/** 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;
}
};
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; }
#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
#endif
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