uint256.h

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Distributed under the MIT/X11 software license, see the accompanying
   3 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #include <limits.h>
   6 #include <string>
   7 #if defined(_MSC_VER) || defined(__BORLANDC__)
   8 typedef __int64  int64;
   9 typedef unsigned __int64  uint64;
  10 #else
  11 typedef long long  int64;
  12 typedef unsigned long long  uint64;
  13 #endif
  14 #if defined(_MSC_VER) && _MSC_VER < 1300
  15 #define for  if (false) ; else for
  16 #endif
  17
  18
  19 inline int Testuint256AdHoc(vector<string> vArg);
  20
  21
  22
  23 // We have to keep a separate base class without constructors
  24 // so the compiler will let us use it in a union
  25 template<unsigned int BITS>
  26 class base_uint
  27 {
  28 protected:
  29     enum { WIDTH=BITS/32 };
  30     unsigned int pn[WIDTH];
  31 public:
  32
  33     bool operator!() const
  34     {
  35         for (int i = 0; i < WIDTH; i++)
  36             if (pn[i] != 0)
  37                 return false;
  38         return true;
  39     }
  40
  41     const base_uint operator~() const
  42     {
  43         base_uint ret;
  44         for (int i = 0; i < WIDTH; i++)
  45             ret.pn[i] = ~pn[i];
  46         return ret;
  47     }
  48
  49     const base_uint operator-() const
  50     {
  51         base_uint ret;
  52         for (int i = 0; i < WIDTH; i++)
  53             ret.pn[i] = ~pn[i];
  54         ret++;
  55         return ret;
  56     }
  57
  58
  59     base_uint& operator=(uint64 b)
  60     {
  61         pn[0] = (unsigned int)b;
  62         pn[1] = (unsigned int)(b >> 32);
  63         for (int i = 2; i < WIDTH; i++)
  64             pn[i] = 0;
  65         return *this;
  66     }
  67
  68     base_uint& operator^=(const base_uint& b)
  69     {
  70         for (int i = 0; i < WIDTH; i++)
  71             pn[i] ^= b.pn[i];
  72         return *this;
  73     }
  74
  75     base_uint& operator&=(const base_uint& b)
  76     {
  77         for (int i = 0; i < WIDTH; i++)
  78             pn[i] &= b.pn[i];
  79         return *this;
  80     }
  81
  82     base_uint& operator|=(const base_uint& b)
  83     {
  84         for (int i = 0; i < WIDTH; i++)
  85             pn[i] |= b.pn[i];
  86         return *this;
  87     }
  88
  89     base_uint& operator^=(uint64 b)
  90     {
  91         pn[0] ^= (unsigned int)b;
  92         pn[1] ^= (unsigned int)(b >> 32);
  93         return *this;
  94     }
  95
  96     base_uint& operator&=(uint64 b)
  97     {
  98         pn[0] &= (unsigned int)b;
  99         pn[1] &= (unsigned int)(b >> 32);
 100         return *this;
 101     }
 102
 103     base_uint& operator|=(uint64 b)
 104     {
 105         pn[0] |= (unsigned int)b;
 106         pn[1] |= (unsigned int)(b >> 32);
 107         return *this;
 108     }
 109
 110     base_uint& operator<<=(unsigned int shift)
 111     {
 112         base_uint a(*this);
 113         for (int i = 0; i < WIDTH; i++)
 114             pn[i] = 0;
 115         int k = shift / 32;
 116         shift = shift % 32;
 117         for (int i = 0; i < WIDTH; i++)
 118         {
 119             if (i+k+1 < WIDTH && shift != 0)
 120                 pn[i+k+1] |= (a.pn[i] >> (32-shift));
 121             if (i+k < WIDTH)
 122                 pn[i+k] |= (a.pn[i] << shift);
 123         }
 124         return *this;
 125     }
 126
 127     base_uint& operator>>=(unsigned int shift)
 128     {
 129         base_uint a(*this);
 130         for (int i = 0; i < WIDTH; i++)
 131             pn[i] = 0;
 132         int k = shift / 32;
 133         shift = shift % 32;
 134         for (int i = 0; i < WIDTH; i++)
 135         {
 136             if (i-k-1 >= 0 && shift != 0)
 137                 pn[i-k-1] |= (a.pn[i] << (32-shift));
 138             if (i-k >= 0)
 139                 pn[i-k] |= (a.pn[i] >> shift);
 140         }
 141         return *this;
 142     }
 143
 144     base_uint& operator+=(const base_uint& b)
 145     {
 146         uint64 carry = 0;
 147         for (int i = 0; i < WIDTH; i++)
 148         {
 149             uint64 n = carry + pn[i] + b.pn[i];
 150             pn[i] = n & 0xffffffff;
 151             carry = n >> 32;
 152         }
 153         return *this;
 154     }
 155
 156     base_uint& operator-=(const base_uint& b)
 157     {
 158         *this += -b;
 159         return *this;
 160     }
 161
 162     base_uint& operator+=(uint64 b64)
 163     {
 164         base_uint b;
 165         b = b64;
 166         *this += b;
 167         return *this;
 168     }
 169
 170     base_uint& operator-=(uint64 b64)
 171     {
 172         base_uint b;
 173         b = b64;
 174         *this += -b;
 175         return *this;
 176     }
 177
 178
 179     base_uint& operator++()
 180     {
 181         // prefix operator
 182         int i = 0;
 183         while (++pn[i] == 0 && i < WIDTH-1)
 184             i++;
 185         return *this;
 186     }
 187
 188     const base_uint operator++(int)
 189     {
 190         // postfix operator
 191         const base_uint ret = *this;
 192         ++(*this);
 193         return ret;
 194     }
 195
 196     base_uint& operator--()
 197     {
 198         // prefix operator
 199         int i = 0;
 200         while (--pn[i] == -1 && i < WIDTH-1)
 201             i++;
 202         return *this;
 203     }
 204
 205     const base_uint operator--(int)
 206     {
 207         // postfix operator
 208         const base_uint ret = *this;
 209         --(*this);
 210         return ret;
 211     }
 212
 213
 214     friend inline bool operator<(const base_uint& a, const base_uint& b)
 215     {
 216         for (int i = base_uint::WIDTH-1; i >= 0; i--)
 217         {
 218             if (a.pn[i] < b.pn[i])
 219                 return true;
 220             else if (a.pn[i] > b.pn[i])
 221                 return false;
 222         }
 223         return false;
 224     }
 225
 226     friend inline bool operator<=(const base_uint& a, const base_uint& b)
 227     {
 228         for (int i = base_uint::WIDTH-1; i >= 0; i--)
 229         {
 230             if (a.pn[i] < b.pn[i])
 231                 return true;
 232             else if (a.pn[i] > b.pn[i])
 233                 return false;
 234         }
 235         return true;
 236     }
 237
 238     friend inline bool operator>(const base_uint& a, const base_uint& b)
 239     {
 240         for (int i = base_uint::WIDTH-1; i >= 0; i--)
 241         {
 242             if (a.pn[i] > b.pn[i])
 243                 return true;
 244             else if (a.pn[i] < b.pn[i])
 245                 return false;
 246         }
 247         return false;
 248     }
 249
 250     friend inline bool operator>=(const base_uint& a, const base_uint& b)
 251     {
 252         for (int i = base_uint::WIDTH-1; i >= 0; i--)
 253         {
 254             if (a.pn[i] > b.pn[i])
 255                 return true;
 256             else if (a.pn[i] < b.pn[i])
 257                 return false;
 258         }
 259         return true;
 260     }
 261
 262     friend inline bool operator==(const base_uint& a, const base_uint& b)
 263     {
 264         for (int i = 0; i < base_uint::WIDTH; i++)
 265             if (a.pn[i] != b.pn[i])
 266                 return false;
 267         return true;
 268     }
 269
 270     friend inline bool operator==(const base_uint& a, uint64 b)
 271     {
 272         if (a.pn[0] != (unsigned int)b)
 273             return false;
 274         if (a.pn[1] != (unsigned int)(b >> 32))
 275             return false;
 276         for (int i = 2; i < base_uint::WIDTH; i++)
 277             if (a.pn[i] != 0)
 278                 return false;
 279         return true;
 280     }
 281
 282     friend inline bool operator!=(const base_uint& a, const base_uint& b)
 283     {
 284         return (!(a == b));
 285     }
 286
 287     friend inline bool operator!=(const base_uint& a, uint64 b)
 288     {
 289         return (!(a == b));
 290     }
 291
 292
 293
 294     std::string GetHex() const
 295     {
 296         char psz[sizeof(pn)*2 + 1];
 297         for (int i = 0; i < sizeof(pn); i++)
 298             sprintf(psz + i*2, "%02x", ((unsigned char*)pn)[sizeof(pn) - i - 1]);
 299         return string(psz, psz + sizeof(pn)*2);
 300     }
 301
 302     void SetHex(const char* psz)
 303     {
 304         for (int i = 0; i < WIDTH; i++)
 305             pn[i] = 0;
 306
 307         // skip leading spaces
 308         while (isspace(*psz))
 309             psz++;
 310
 311         // skip 0x
 312         if (psz[0] == '0' && tolower(psz[1]) == 'x')
 313             psz += 2;
 314
 315         // hex string to uint
 316         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 };
 317         const char* pbegin = psz;
 318         while (phexdigit[*psz] || *psz == '0')
 319             psz++;
 320         psz--;
 321         unsigned char* p1 = (unsigned char*)pn;
 322         unsigned char* pend = p1 + WIDTH * 4;
 323         while (psz >= pbegin && p1 < pend)
 324         {
 325             *p1 = phexdigit[(unsigned char)*psz--];
 326             if (psz >= pbegin)
 327             {
 328                 *p1 |= (phexdigit[(unsigned char)*psz--] << 4);
 329                 p1++;
 330             }
 331         }
 332     }
 333
 334     void SetHex(const std::string& str)
 335     {
 336         SetHex(str.c_str());
 337     }
 338
 339     std::string ToString() const
 340     {
 341         return (GetHex());
 342     }
 343
 344     unsigned char* begin()
 345     {
 346         return (unsigned char*)&pn[0];
 347     }
 348
 349     unsigned char* end()
 350     {
 351         return (unsigned char*)&pn[WIDTH];
 352     }
 353
 354     unsigned int size()
 355     {
 356         return sizeof(pn);
 357     }
 358
 359
 360     unsigned int GetSerializeSize(int nType=0, int nVersion=VERSION) const
 361     {
 362         return sizeof(pn);
 363     }
 364
 365     template<typename Stream>
 366     void Serialize(Stream& s, int nType=0, int nVersion=VERSION) const
 367     {
 368         s.write((char*)pn, sizeof(pn));
 369     }
 370
 371     template<typename Stream>
 372     void Unserialize(Stream& s, int nType=0, int nVersion=VERSION)
 373     {
 374         s.read((char*)pn, sizeof(pn));
 375     }
 376
 377
 378     friend class uint160;
 379     friend class uint256;
 380     friend inline int Testuint256AdHoc(vector<string> vArg);
 381 };
 382
 383 typedef base_uint<160> base_uint160;
 384 typedef base_uint<256> base_uint256;
 385
 386
 387
 388 //
 389 // uint160 and uint256 could be implemented as templates, but to keep
 390 // compile errors and debugging cleaner, they're copy and pasted.
 391 //
 392
 393
 394
 395 //////////////////////////////////////////////////////////////////////////////
 396 //
 397 // uint160
 398 //
 399
 400 class uint160 : public base_uint160
 401 {
 402 public:
 403     typedef base_uint160 basetype;
 404
 405     uint160()
 406     {
 407         for (int i = 0; i < WIDTH; i++)
 408             pn[i] = 0;
 409     }
 410
 411     uint160(const basetype& b)
 412     {
 413         for (int i = 0; i < WIDTH; i++)
 414             pn[i] = b.pn[i];
 415     }
 416
 417     uint160& operator=(const basetype& b)
 418     {
 419         for (int i = 0; i < WIDTH; i++)
 420             pn[i] = b.pn[i];
 421         return *this;
 422     }
 423
 424     uint160(uint64 b)
 425     {
 426         pn[0] = (unsigned int)b;
 427         pn[1] = (unsigned int)(b >> 32);
 428         for (int i = 2; i < WIDTH; i++)
 429             pn[i] = 0;
 430     }
 431
 432     uint160& operator=(uint64 b)
 433     {
 434         pn[0] = (unsigned int)b;
 435         pn[1] = (unsigned int)(b >> 32);
 436         for (int i = 2; i < WIDTH; i++)
 437             pn[i] = 0;
 438         return *this;
 439     }
 440
 441     explicit uint160(const std::string& str)
 442     {
 443         SetHex(str);
 444     }
 445
 446     explicit uint160(const std::vector<unsigned char>& vch)
 447     {
 448         if (vch.size() == sizeof(pn))
 449             memcpy(pn, &vch[0], sizeof(pn));
 450         else
 451             *this = 0;
 452     }
 453 };
 454
 455 inline bool operator==(const uint160& a, uint64 b)                           { return (base_uint160)a == b; }
 456 inline bool operator!=(const uint160& a, uint64 b)                           { return (base_uint160)a != b; }
 457 inline const uint160 operator<<(const base_uint160& a, unsigned int shift)   { return uint160(a) <<= shift; }
 458 inline const uint160 operator>>(const base_uint160& a, unsigned int shift)   { return uint160(a) >>= shift; }
 459 inline const uint160 operator<<(const uint160& a, unsigned int shift)        { return uint160(a) <<= shift; }
 460 inline const uint160 operator>>(const uint160& a, unsigned int shift)        { return uint160(a) >>= shift; }
 461
 462 inline const uint160 operator^(const base_uint160& a, const base_uint160& b) { return uint160(a) ^= b; }
 463 inline const uint160 operator&(const base_uint160& a, const base_uint160& b) { return uint160(a) &= b; }
 464 inline const uint160 operator|(const base_uint160& a, const base_uint160& b) { return uint160(a) |= b; }
 465 inline const uint160 operator+(const base_uint160& a, const base_uint160& b) { return uint160(a) += b; }
 466 inline const uint160 operator-(const base_uint160& a, const base_uint160& b) { return uint160(a) -= b; }
 467
 468 inline bool operator<(const base_uint160& a, const uint160& b)          { return (base_uint160)a <  (base_uint160)b; }
 469 inline bool operator<=(const base_uint160& a, const uint160& b)         { return (base_uint160)a <= (base_uint160)b; }
 470 inline bool operator>(const base_uint160& a, const uint160& b)          { return (base_uint160)a >  (base_uint160)b; }
 471 inline bool operator>=(const base_uint160& a, const uint160& b)         { return (base_uint160)a >= (base_uint160)b; }
 472 inline bool operator==(const base_uint160& a, const uint160& b)         { return (base_uint160)a == (base_uint160)b; }
 473 inline bool operator!=(const base_uint160& a, const uint160& b)         { return (base_uint160)a != (base_uint160)b; }
 474 inline const uint160 operator^(const base_uint160& a, const uint160& b) { return (base_uint160)a ^  (base_uint160)b; }
 475 inline const uint160 operator&(const base_uint160& a, const uint160& b) { return (base_uint160)a &  (base_uint160)b; }
 476 inline const uint160 operator|(const base_uint160& a, const uint160& b) { return (base_uint160)a |  (base_uint160)b; }
 477 inline const uint160 operator+(const base_uint160& a, const uint160& b) { return (base_uint160)a +  (base_uint160)b; }
 478 inline const uint160 operator-(const base_uint160& a, const uint160& b) { return (base_uint160)a -  (base_uint160)b; }
 479
 480 inline bool operator<(const uint160& a, const base_uint160& b)          { return (base_uint160)a <  (base_uint160)b; }
 481 inline bool operator<=(const uint160& a, const base_uint160& b)         { return (base_uint160)a <= (base_uint160)b; }
 482 inline bool operator>(const uint160& a, const base_uint160& b)          { return (base_uint160)a >  (base_uint160)b; }
 483 inline bool operator>=(const uint160& a, const base_uint160& b)         { return (base_uint160)a >= (base_uint160)b; }
 484 inline bool operator==(const uint160& a, const base_uint160& b)         { return (base_uint160)a == (base_uint160)b; }
 485 inline bool operator!=(const uint160& a, const base_uint160& b)         { return (base_uint160)a != (base_uint160)b; }
 486 inline const uint160 operator^(const uint160& a, const base_uint160& b) { return (base_uint160)a ^  (base_uint160)b; }
 487 inline const uint160 operator&(const uint160& a, const base_uint160& b) { return (base_uint160)a &  (base_uint160)b; }
 488 inline const uint160 operator|(const uint160& a, const base_uint160& b) { return (base_uint160)a |  (base_uint160)b; }
 489 inline const uint160 operator+(const uint160& a, const base_uint160& b) { return (base_uint160)a +  (base_uint160)b; }
 490 inline const uint160 operator-(const uint160& a, const base_uint160& b) { return (base_uint160)a -  (base_uint160)b; }
 491
 492 inline bool operator<(const uint160& a, const uint160& b)               { return (base_uint160)a <  (base_uint160)b; }
 493 inline bool operator<=(const uint160& a, const uint160& b)              { return (base_uint160)a <= (base_uint160)b; }
 494 inline bool operator>(const uint160& a, const uint160& b)               { return (base_uint160)a >  (base_uint160)b; }
 495 inline bool operator>=(const uint160& a, const uint160& b)              { return (base_uint160)a >= (base_uint160)b; }
 496 inline bool operator==(const uint160& a, const uint160& b)              { return (base_uint160)a == (base_uint160)b; }
 497 inline bool operator!=(const uint160& a, const uint160& b)              { return (base_uint160)a != (base_uint160)b; }
 498 inline const uint160 operator^(const uint160& a, const uint160& b)      { return (base_uint160)a ^  (base_uint160)b; }
 499 inline const uint160 operator&(const uint160& a, const uint160& b)      { return (base_uint160)a &  (base_uint160)b; }
 500 inline const uint160 operator|(const uint160& a, const uint160& b)      { return (base_uint160)a |  (base_uint160)b; }
 501 inline const uint160 operator+(const uint160& a, const uint160& b)      { return (base_uint160)a +  (base_uint160)b; }
 502 inline const uint160 operator-(const uint160& a, const uint160& b)      { return (base_uint160)a -  (base_uint160)b; }
 503
 504
 505
 506
 507
 508
 509 //////////////////////////////////////////////////////////////////////////////
 510 //
 511 // uint256
 512 //
 513
 514 class uint256 : public base_uint256
 515 {
 516 public:
 517     typedef base_uint256 basetype;
 518
 519     uint256()
 520     {
 521         for (int i = 0; i < WIDTH; i++)
 522             pn[i] = 0;
 523     }
 524
 525     uint256(const basetype& b)
 526     {
 527         for (int i = 0; i < WIDTH; i++)
 528             pn[i] = b.pn[i];
 529     }
 530
 531     uint256& operator=(const basetype& b)
 532     {
 533         for (int i = 0; i < WIDTH; i++)
 534             pn[i] = b.pn[i];
 535         return *this;
 536     }
 537
 538     uint256(uint64 b)
 539     {
 540         pn[0] = (unsigned int)b;
 541         pn[1] = (unsigned int)(b >> 32);
 542         for (int i = 2; i < WIDTH; i++)
 543             pn[i] = 0;
 544     }
 545
 546     uint256& operator=(uint64 b)
 547     {
 548         pn[0] = (unsigned int)b;
 549         pn[1] = (unsigned int)(b >> 32);
 550         for (int i = 2; i < WIDTH; i++)
 551             pn[i] = 0;
 552         return *this;
 553     }
 554
 555     explicit uint256(const std::string& str)
 556     {
 557         SetHex(str);
 558     }
 559
 560     explicit uint256(const std::vector<unsigned char>& vch)
 561     {
 562         if (vch.size() == sizeof(pn))
 563             memcpy(pn, &vch[0], sizeof(pn));
 564         else
 565             *this = 0;
 566     }
 567 };
 568
 569 inline bool operator==(const uint256& a, uint64 b)                           { return (base_uint256)a == b; }
 570 inline bool operator!=(const uint256& a, uint64 b)                           { return (base_uint256)a != b; }
 571 inline const uint256 operator<<(const base_uint256& a, unsigned int shift)   { return uint256(a) <<= shift; }
 572 inline const uint256 operator>>(const base_uint256& a, unsigned int shift)   { return uint256(a) >>= shift; }
 573 inline const uint256 operator<<(const uint256& a, unsigned int shift)        { return uint256(a) <<= shift; }
 574 inline const uint256 operator>>(const uint256& a, unsigned int shift)        { return uint256(a) >>= shift; }
 575
 576 inline const uint256 operator^(const base_uint256& a, const base_uint256& b) { return uint256(a) ^= b; }
 577 inline const uint256 operator&(const base_uint256& a, const base_uint256& b) { return uint256(a) &= b; }
 578 inline const uint256 operator|(const base_uint256& a, const base_uint256& b) { return uint256(a) |= b; }
 579 inline const uint256 operator+(const base_uint256& a, const base_uint256& b) { return uint256(a) += b; }
 580 inline const uint256 operator-(const base_uint256& a, const base_uint256& b) { return uint256(a) -= b; }
 581
 582 inline bool operator<(const base_uint256& a, const uint256& b)          { return (base_uint256)a <  (base_uint256)b; }
 583 inline bool operator<=(const base_uint256& a, const uint256& b)         { return (base_uint256)a <= (base_uint256)b; }
 584 inline bool operator>(const base_uint256& a, const uint256& b)          { return (base_uint256)a >  (base_uint256)b; }
 585 inline bool operator>=(const base_uint256& a, const uint256& b)         { return (base_uint256)a >= (base_uint256)b; }
 586 inline bool operator==(const base_uint256& a, const uint256& b)         { return (base_uint256)a == (base_uint256)b; }
 587 inline bool operator!=(const base_uint256& a, const uint256& b)         { return (base_uint256)a != (base_uint256)b; }
 588 inline const uint256 operator^(const base_uint256& a, const uint256& b) { return (base_uint256)a ^  (base_uint256)b; }
 589 inline const uint256 operator&(const base_uint256& a, const uint256& b) { return (base_uint256)a &  (base_uint256)b; }
 590 inline const uint256 operator|(const base_uint256& a, const uint256& b) { return (base_uint256)a |  (base_uint256)b; }
 591 inline const uint256 operator+(const base_uint256& a, const uint256& b) { return (base_uint256)a +  (base_uint256)b; }
 592 inline const uint256 operator-(const base_uint256& a, const uint256& b) { return (base_uint256)a -  (base_uint256)b; }
 593
 594 inline bool operator<(const uint256& a, const base_uint256& b)          { return (base_uint256)a <  (base_uint256)b; }
 595 inline bool operator<=(const uint256& a, const base_uint256& b)         { return (base_uint256)a <= (base_uint256)b; }
 596 inline bool operator>(const uint256& a, const base_uint256& b)          { return (base_uint256)a >  (base_uint256)b; }
 597 inline bool operator>=(const uint256& a, const base_uint256& b)         { return (base_uint256)a >= (base_uint256)b; }
 598 inline bool operator==(const uint256& a, const base_uint256& b)         { return (base_uint256)a == (base_uint256)b; }
 599 inline bool operator!=(const uint256& a, const base_uint256& b)         { return (base_uint256)a != (base_uint256)b; }
 600 inline const uint256 operator^(const uint256& a, const base_uint256& b) { return (base_uint256)a ^  (base_uint256)b; }
 601 inline const uint256 operator&(const uint256& a, const base_uint256& b) { return (base_uint256)a &  (base_uint256)b; }
 602 inline const uint256 operator|(const uint256& a, const base_uint256& b) { return (base_uint256)a |  (base_uint256)b; }
 603 inline const uint256 operator+(const uint256& a, const base_uint256& b) { return (base_uint256)a +  (base_uint256)b; }
 604 inline const uint256 operator-(const uint256& a, const base_uint256& b) { return (base_uint256)a -  (base_uint256)b; }
 605
 606 inline bool operator<(const uint256& a, const uint256& b)               { return (base_uint256)a <  (base_uint256)b; }
 607 inline bool operator<=(const uint256& a, const uint256& b)              { return (base_uint256)a <= (base_uint256)b; }
 608 inline bool operator>(const uint256& a, const uint256& b)               { return (base_uint256)a >  (base_uint256)b; }
 609 inline bool operator>=(const uint256& a, const uint256& b)              { return (base_uint256)a >= (base_uint256)b; }
 610 inline bool operator==(const uint256& a, const uint256& b)              { return (base_uint256)a == (base_uint256)b; }
 611 inline bool operator!=(const uint256& a, const uint256& b)              { return (base_uint256)a != (base_uint256)b; }
 612 inline const uint256 operator^(const uint256& a, const uint256& b)      { return (base_uint256)a ^  (base_uint256)b; }
 613 inline const uint256 operator&(const uint256& a, const uint256& b)      { return (base_uint256)a &  (base_uint256)b; }
 614 inline const uint256 operator|(const uint256& a, const uint256& b)      { return (base_uint256)a |  (base_uint256)b; }
 615 inline const uint256 operator+(const uint256& a, const uint256& b)      { return (base_uint256)a +  (base_uint256)b; }
 616 inline const uint256 operator-(const uint256& a, const uint256& b)      { return (base_uint256)a -  (base_uint256)b; }
 617
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 628
 629 inline int Testuint256AdHoc(vector<string> vArg)
 630 {
 631     uint256 g(0);
 632
 633
 634     printf("%s\n", g.ToString().c_str());
 635     g--;  printf("g--\n");
 636     printf("%s\n", g.ToString().c_str());
 637     g--;  printf("g--\n");
 638     printf("%s\n", g.ToString().c_str());
 639     g++;  printf("g++\n");
 640     printf("%s\n", g.ToString().c_str());
 641     g++;  printf("g++\n");
 642     printf("%s\n", g.ToString().c_str());
 643     g++;  printf("g++\n");
 644     printf("%s\n", g.ToString().c_str());
 645     g++;  printf("g++\n");
 646     printf("%s\n", g.ToString().c_str());
 647
 648
 649
 650     uint256 a(7);
 651     printf("a=7\n");
 652     printf("%s\n", a.ToString().c_str());
 653
 654     uint256 b;
 655     printf("b undefined\n");
 656     printf("%s\n", b.ToString().c_str());
 657     int c = 3;
 658
 659     a = c;
 660     a.pn[3] = 15;
 661     printf("%s\n", a.ToString().c_str());
 662     uint256 k(c);
 663
 664     a = 5;
 665     a.pn[3] = 15;
 666     printf("%s\n", a.ToString().c_str());
 667     b = 1;
 668     b <<= 52;
 669
 670     a |= b;
 671
 672     a ^= 0x500;
 673
 674     printf("a %s\n", a.ToString().c_str());
 675
 676     a = a | b | (uint256)0x1000;
 677
 678
 679     printf("a %s\n", a.ToString().c_str());
 680     printf("b %s\n", b.ToString().c_str());
 681
 682     a = 0xfffffffe;
 683     a.pn[4] = 9;
 684
 685     printf("%s\n", a.ToString().c_str());
 686     a++;
 687     printf("%s\n", a.ToString().c_str());
 688     a++;
 689     printf("%s\n", a.ToString().c_str());
 690     a++;
 691     printf("%s\n", a.ToString().c_str());
 692     a++;
 693     printf("%s\n", a.ToString().c_str());
 694
 695     a--;
 696     printf("%s\n", a.ToString().c_str());
 697     a--;
 698     printf("%s\n", a.ToString().c_str());
 699     a--;
 700     printf("%s\n", a.ToString().c_str());
 701     uint256 d = a--;
 702     printf("%s\n", d.ToString().c_str());
 703     printf("%s\n", a.ToString().c_str());
 704     a--;
 705     printf("%s\n", a.ToString().c_str());
 706     a--;
 707     printf("%s\n", a.ToString().c_str());
 708
 709     d = a;
 710
 711     printf("%s\n", d.ToString().c_str());
 712     for (int i = uint256::WIDTH-1; i >= 0; i--) printf("%08x", d.pn[i]); printf("\n");
 713
 714     uint256 neg = d;
 715     neg = ~neg;
 716     printf("%s\n", neg.ToString().c_str());
 717
 718
 719     uint256 e = uint256("0xABCDEF123abcdef12345678909832180000011111111");
 720     printf("\n");
 721     printf("%s\n", e.ToString().c_str());
 722
 723
 724     printf("\n");
 725     uint256 x1 = uint256("0xABCDEF123abcdef12345678909832180000011111111");
 726     uint256 x2;
 727     printf("%s\n", x1.ToString().c_str());
 728     for (int i = 0; i < 270; i += 4)
 729     {
 730         x2 = x1 << i;
 731         printf("%s\n", x2.ToString().c_str());
 732     }
 733
 734     printf("\n");
 735     printf("%s\n", x1.ToString().c_str());
 736     for (int i = 0; i < 270; i += 4)
 737     {
 738         x2 = x1;
 739         x2 >>= i;
 740         printf("%s\n", x2.ToString().c_str());
 741     }
 742
 743
 744     for (int i = 0; i < 100; i++)
 745     {
 746         uint256 k = (~uint256(0) >> i);
 747         printf("%s\n", k.ToString().c_str());
 748     }
 749
 750     for (int i = 0; i < 100; i++)
 751     {
 752         uint256 k = (~uint256(0) << i);
 753         printf("%s\n", k.ToString().c_str());
 754     }
 755
 756     return (0);
 757 }