src/kademlia/utils/UInt128.h

   1 //
   2 // This file is part of the aMule Project.
   3 //
   4 // Copyright (c) 2004-2008 Angel Vidal (Kry) ( kry@amule.org )
   5 // Copyright (c) 2004-2008 aMule Team ( admin@amule.org / http://www.amule.org )
   6 // Copyright (c) 2003 Barry Dunne (http://www.emule-project.net)
   7 //
   8 // Any parts of this program derived from the xMule, lMule or eMule project,
   9 // or contributed by third-party developers are copyrighted by their
  10 // respective authors.
  11 //
  12 // This program is free software; you can redistribute it and/or modify
  13 // it under the terms of the GNU General Public License as published by
  14 // the Free Software Foundation; either version 2 of the License, or
  15 // (at your option) any later version.
  16 //
  17 // This program is distributed in the hope that it will be useful,
  18 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 // GNU General Public License for more details.
  21 //
  22 // You should have received a copy of the GNU General Public License
  23 // along with this program; if not, write to the Free Software
  24 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  25 //
  26
  27 // Note To Mods //
  28 /*
  29 Please do not change anything here and release it..
  30 There is going to be a new forum created just for the Kademlia side of the client..
  31 If you feel there is an error or a way to improve something, please
  32 post it in the forum first and let us look at it.. If it is a real improvement,
  33 it will be added to the offical client.. Changing something without knowing
  34 what all it does can cause great harm to the network if released in mass form..
  35 Any mod that changes anything within the Kademlia side will not be allowed to advertise
  36 there client on the eMule forum..
  37 */
  38
  39 #ifndef __UINT128_H__
  40 #define __UINT128_H__
  41
  42 #include "../../Types.h"
  43
  44 ////////////////////////////////////////
  45 namespace Kademlia {
  46 ////////////////////////////////////////
  47
  48 class CUInt128
  49 {
  50 public:
  51
  52         CUInt128();
  53         explicit CUInt128(bool fill);
  54         explicit CUInt128(uint32 value);
  55         explicit CUInt128(const byte *valueBE);
  56         /**
  57          * Generates a new number, copying the most significant 'numBits' bits from 'value'.
  58          * The remaining bits are randomly generated.
  59          */
  60         CUInt128(const CUInt128 &value, uint32 numBits = 128);
  61
  62         ~CUInt128() {};
  63
  64         const byte* GetData() const { return (byte*)m_data; }
  65         byte* GetDataPtr() const { return (byte*)m_data; }
  66
  67         /** Bit at level 0 being most significant. */
  68         uint32 GetBitNumber(uint32 bit) const;
  69         int CompareTo(const CUInt128 &other) const;
  70         int CompareTo(uint32 value) const;
  71
  72         wxString ToHexString(void) const;
  73         wxString ToBinaryString(bool trim = false) const;
  74         void ToByteArray(byte *b) const;
  75
  76         uint32 Get32BitChunk(int val) const {return m_data[val];}
  77
  78         CUInt128& SetValue(const CUInt128 &value);
  79         CUInt128& SetValue(uint32 value);
  80         CUInt128& SetValueBE(const byte *valueBE);
  81
  82         CUInt128& SetValueRandom(void);
  83 //      CUInt128& SetValueGUID(void);
  84
  85         CUInt128& SetBitNumber(uint32 bit, uint32 value);
  86         CUInt128& ShiftLeft(uint32 bits);
  87
  88         CUInt128& Add(const CUInt128 &value);
  89         CUInt128& Add(uint32 value);
  90         CUInt128& Subtract(const CUInt128 &value);
  91         CUInt128& Subtract(uint32 value);
  92
  93         CUInt128& XOR(const CUInt128 &value);
  94         CUInt128& XORBE(const byte *valueBE);
  95
  96         void operator+  (const CUInt128 &value) {Add(value);}
  97         void operator-  (const CUInt128 &value) {Subtract(value);}
  98         void operator=  (const CUInt128 &value) {SetValue(value);}
  99         bool operator<  (const CUInt128 &value) const {return (CompareTo(value) <  0);}
 100         bool operator>  (const CUInt128 &value) const {return (CompareTo(value) >  0);}
 101         bool operator<= (const CUInt128 &value) const {return (CompareTo(value) <= 0);}
 102         bool operator>= (const CUInt128 &value) const {return (CompareTo(value) >= 0);}
 103         bool operator== (const CUInt128 &value) const {return (CompareTo(value) == 0);}
 104         bool operator!= (const CUInt128 &value) const {return (CompareTo(value) != 0);}
 105
 106         void operator+  (uint32 value) {Add(value);}
 107         void operator-  (uint32 value) {Subtract(value);}
 108         void operator=  (uint32 value) {SetValue(value);}
 109         bool operator<  (uint32 value) const {return (CompareTo(value) <  0);}
 110         bool operator>  (uint32 value) const {return (CompareTo(value) >  0);}
 111         bool operator<= (uint32 value) const {return (CompareTo(value) <= 0);}
 112         bool operator>= (uint32 value) const {return (CompareTo(value) >= 0);}
 113         bool operator== (uint32 value) const {return (CompareTo(value) == 0);}
 114         bool operator!= (uint32 value) const {return (CompareTo(value) != 0);}
 115
 116 private:
 117
 118         uint32 m_data[4];
 119 };
 120
 121 } // End namespace
 122
 123 #endif
 124 // File_checked_for_headers