mirror of
https://github.com/XRPLF/rippled.git
synced 2025-11-27 22:45:52 +00:00
Moved cpp code to src/cpp and js code to src/js.
This commit is contained in:
Stefan Thomas
705
src/cpp/ripple/uint256.h
Normal file
705
src/cpp/ripple/uint256.h
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@@ -0,0 +1,705 @@
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// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2011 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file license.txt or http://www.opensource.org/licenses/mit-license.php.
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#ifndef NEWCOIN_UINT256_H
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#define NEWCOIN_UINT256_H
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#include <algorithm>
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#include <climits>
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#include <string>
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#include <vector>
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#include <cstdio>
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#include <cstring>
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#include <cassert>
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#include <boost/functional/hash.hpp>
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#include "types.h"
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#include "utils.h"
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#if defined(_MSC_VER) && _MSC_VER < 1300
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#define for if (false) ; else for
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#endif
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// These classes all store their values internally
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// in little-endian form
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inline int Testuint256AdHoc(std::vector<std::string> vArg);
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// We have to keep a separate base class without constructors
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// so the compiler will let us use it in a union
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template<unsigned int BITS>
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class base_uint
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{
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protected:
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enum { WIDTH=BITS/32 };
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// This is really big-endian in byte order.
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// We use unsigned int for speed.
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unsigned int pn[WIDTH];
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public:
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bool isZero() const
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{
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for (int i = 0; i < WIDTH; i++)
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if (pn[i] != 0)
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return false;
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return true;
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}
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bool isNonZero() const
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{
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return !isZero();
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}
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bool operator!() const
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{
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return isZero();
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}
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const base_uint operator~() const
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{
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base_uint ret;
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for (int i = 0; i < WIDTH; i++)
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ret.pn[i] = ~pn[i];
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return ret;
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}
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base_uint& operator=(uint64 uHost)
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{
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zero();
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// Put in least significant bits.
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((uint64_t *) end())[-1] = htobe64(uHost);
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return *this;
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}
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base_uint& operator^=(const base_uint& b)
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{
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for (int i = 0; i < WIDTH; i++)
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pn[i] ^= b.pn[i];
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return *this;
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}
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base_uint& operator&=(const base_uint& b)
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{
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for (int i = 0; i < WIDTH; i++)
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pn[i] &= b.pn[i];
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return *this;
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}
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base_uint& operator|=(const base_uint& b)
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{
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for (int i = 0; i < WIDTH; i++)
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pn[i] |= b.pn[i];
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return *this;
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}
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base_uint& operator++()
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{
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// prefix operator
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int i = WIDTH;
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while (i-- && !++pn[i])
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;
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return *this;
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}
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const base_uint operator++(int)
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{
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// postfix operator
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const base_uint ret = *this;
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++(*this);
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return ret;
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}
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base_uint& operator--()
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{
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int i = WIDTH;
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while (i-- && !pn[i]--)
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;
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return *this;
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}
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const base_uint operator--(int)
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{
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// postfix operator
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const base_uint ret = *this;
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--(*this);
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return ret;
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}
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base_uint& operator+=(const base_uint& b)
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{
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uint64 carry = 0;
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for (int i = WIDTH; i--;)
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{
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uint64 n = carry + be32toh(pn[i]) + be32toh(b.pn[i]);
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pn[i] = htobe32(n & 0xffffffff);
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carry = n >> 32;
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}
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return *this;
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}
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std::size_t hash_combine(std::size_t& seed) const
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{
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for (int i = 0; i < WIDTH; ++i)
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boost::hash_combine(seed, pn[i]);
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return seed;
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}
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friend inline int compare(const base_uint& a, const base_uint& b)
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{
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const unsigned char* pA = a.begin();
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const unsigned char* pAEnd = a.end();
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const unsigned char* pB = b.begin();
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while (pA != pAEnd && *pA == *pB)
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pA++, pB++;
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return pA == pAEnd ? 0 : *pA < *pB ? -1 : *pA > *pB ? 1 : 0;
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}
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friend inline bool operator<(const base_uint& a, const base_uint& b)
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{
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return compare(a, b) < 0;
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}
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friend inline bool operator<=(const base_uint& a, const base_uint& b)
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{
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return compare(a, b) <= 0;
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}
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friend inline bool operator>(const base_uint& a, const base_uint& b)
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{
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return compare(a, b) > 0;
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}
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friend inline bool operator>=(const base_uint& a, const base_uint& b)
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{
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return compare(a, b) >= 0;
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}
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friend inline bool operator==(const base_uint& a, const base_uint& b)
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{
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return !compare(a, b);
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}
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friend inline bool operator!=(const base_uint& a, const base_uint& b)
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{
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return !!compare(a, b);
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}
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std::string GetHex() const
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{
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return strHex(begin(), size());
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}
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void SetHex(const char* psz)
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{
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// skip leading spaces
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while (isspace(*psz))
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psz++;
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// skip 0x
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if (psz[0] == '0' && tolower(psz[1]) == 'x')
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psz += 2;
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// hex char to int
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static signed char phexdigit[256] = {
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1, -1,-1,-1,-1,
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-1,0xa,0xb,0xc, 0xd,0xe,0xf,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,0xa,0xb,0xc, 0xd,0xe,0xf,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
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};
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const unsigned char* pEnd = reinterpret_cast<const unsigned char*>(psz);
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const unsigned char* pBegin = pEnd;
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// Find end.
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while (phexdigit[*pEnd] >= 0)
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pEnd++;
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// Take only last digits of over long string.
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if ((unsigned int)(pEnd-pBegin) > 2*size())
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pBegin = pEnd - 2*size();
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unsigned char* pOut = end()-((pEnd-pBegin+1)/2);
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zero();
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if ((pEnd-pBegin) & 1)
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*pOut++ = phexdigit[*pBegin++];
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while (pBegin != pEnd)
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{
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unsigned char cHigh = phexdigit[*pBegin++] << 4;
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unsigned char cLow = pBegin == pEnd
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? 0
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: phexdigit[*pBegin++];
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*pOut++ = cHigh | cLow;
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}
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}
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void SetHex(const std::string& str)
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{
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SetHex(str.c_str());
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}
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std::string ToString() const
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{
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return GetHex();
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}
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unsigned char* begin()
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{
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return (unsigned char*) &pn[0];
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}
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unsigned char* end()
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{
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return (unsigned char*) &pn[WIDTH];
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}
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const unsigned char* begin() const
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{
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return (const unsigned char*) &pn[0];
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}
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const unsigned char* end() const
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{
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return (unsigned char*) &pn[WIDTH];
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}
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unsigned int size() const
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{
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return sizeof(pn);
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}
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void zero()
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{
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memset(&pn[0], 0, sizeof(pn));
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}
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unsigned int GetSerializeSize(int nType=0) const
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{
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return sizeof(pn);
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}
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template<typename Stream>
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void Serialize(Stream& s, int nType=0) const
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{
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s.write((char*)pn, sizeof(pn));
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}
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template<typename Stream>
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void Unserialize(Stream& s, int nType=0)
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{
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s.read((char*)pn, sizeof(pn));
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}
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friend class uint128;
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friend class uint160;
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friend class uint256;
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friend inline int Testuint256AdHoc(std::vector<std::string> vArg);
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};
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typedef base_uint<128> base_uint128;
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typedef base_uint<160> base_uint160;
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typedef base_uint<256> base_uint256;
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//
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// uint128, uint160, & uint256 could be implemented as templates, but to keep
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// compile errors and debugging cleaner, they're copy and pasted.
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//
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//////////////////////////////////////////////////////////////////////////////
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//
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// uint128
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//
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class uint128 : public base_uint128
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{
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public:
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typedef base_uint128 basetype;
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uint128()
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{
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zero();
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}
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uint128(const basetype& b)
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{
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*this = b;
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}
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uint128& operator=(const basetype& b)
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{
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for (int i = 0; i < WIDTH; i++)
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pn[i] = b.pn[i];
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return *this;
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}
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explicit uint128(const base_uint256& b) {
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for (int i = 0; i < WIDTH; i++)
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pn[i] = b.pn[i];
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}
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explicit uint128(const std::vector<unsigned char>& vch)
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{
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if (vch.size() == size())
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memcpy(pn, &vch[0], size());
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else
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zero();
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}
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};
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//////////////////////////////////////////////////////////////////////////////
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//
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// uint256
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//
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class uint256 : public base_uint256
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{
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public:
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typedef base_uint256 basetype;
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uint256()
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{
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zero();
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}
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uint256(const basetype& b)
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{
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*this = b;
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}
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uint256& operator=(const basetype& b)
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{
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for (int i = 0; i < WIDTH; i++)
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pn[i] = b.pn[i];
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return *this;
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}
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uint256(uint64 b)
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{
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*this = b;
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}
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uint256& operator=(uint64 uHost)
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{
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zero();
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// Put in least significant bits.
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((uint64_t *) end())[-1] = htobe64(uHost);
|
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|
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return *this;
|
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}
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explicit uint256(const std::string& str)
|
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{
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SetHex(str);
|
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}
|
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explicit uint256(const std::vector<unsigned char>& vch)
|
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{
|
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if (vch.size() == sizeof(pn))
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memcpy(pn, &vch[0], sizeof(pn));
|
||||
else
|
||||
{
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assert(false);
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zero();
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}
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}
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};
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inline bool operator==(const uint256& a, uint64 b) { return (base_uint256)a == b; }
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inline bool operator!=(const uint256& a, uint64 b) { return (base_uint256)a != b; }
|
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inline const uint256 operator^(const base_uint256& a, const base_uint256& b) { return uint256(a) ^= b; }
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inline const uint256 operator&(const base_uint256& a, const base_uint256& b) { return uint256(a) &= b; }
|
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inline const uint256 operator|(const base_uint256& a, const base_uint256& b) { return uint256(a) |= b; }
|
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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 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 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; }
|
||||
extern std::size_t hash_value(const uint256&);
|
||||
|
||||
template<unsigned int BITS> inline std::ostream& operator<<(std::ostream& out, const base_uint<BITS>& u)
|
||||
{
|
||||
return out << u.GetHex();
|
||||
}
|
||||
|
||||
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());
|
||||
}
|
||||
|
||||
#if 0
|
||||
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());
|
||||
}
|
||||
#endif
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
//////////////////////////////////////////////////////////////////////////////
|
||||
//
|
||||
// uint160
|
||||
//
|
||||
|
||||
class uint160 : public base_uint160
|
||||
{
|
||||
public:
|
||||
typedef base_uint160 basetype;
|
||||
|
||||
uint160()
|
||||
{
|
||||
zero();
|
||||
}
|
||||
|
||||
uint160(const basetype& b)
|
||||
{
|
||||
*this = b;
|
||||
}
|
||||
|
||||
uint160& operator=(const basetype& b)
|
||||
{
|
||||
for (int i = 0; i < WIDTH; i++)
|
||||
pn[i] = b.pn[i];
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
uint160(uint64 b)
|
||||
{
|
||||
*this = b;
|
||||
}
|
||||
|
||||
uint160& operator=(uint64 uHost)
|
||||
{
|
||||
zero();
|
||||
|
||||
// Put in least significant bits.
|
||||
((uint64_t *) end())[-1] = htobe64(uHost);
|
||||
|
||||
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
|
||||
zero();
|
||||
}
|
||||
|
||||
base_uint256 to256() const
|
||||
{
|
||||
uint256 m;
|
||||
memcpy(m.begin(), begin(), size());
|
||||
return m;
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
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, 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 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 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 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; }
|
||||
|
||||
extern std::size_t hash_value(const uint160&);
|
||||
|
||||
inline const std::string strHex(const uint160& ui)
|
||||
{
|
||||
return strHex(ui.begin(), ui.size());
|
||||
}
|
||||
|
||||
|
||||
#endif
|
||||
// vim:ts=4
|
||||
Reference in New Issue
Block a user