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110 lines
3.8 KiB
110 lines
3.8 KiB
/*==LICENSE==* |
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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/***************************************************************************** |
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* |
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* $/Plasma20/Sources/Plasma/NucleusLib/pnUtils/Private/pnUtBigNum.h |
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* |
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***/ |
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#ifdef PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNUTILS_PRIVATE_PNUTBIGNUM_H |
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#error "Header $/Plasma20/Sources/Plasma/NucleusLib/pnUtils/Private/pnUtBigNum.h included more than once" |
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#endif |
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#define PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNUTILS_PRIVATE_PNUTBIGNUM_H |
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/***************************************************************************** |
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* |
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* BigNum class |
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* |
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***/ |
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class BigNum : private ARRAY(dword) { |
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public: |
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typedef dword Val; // must match base array |
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typedef qword DVal; // must be twice as large as Val |
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private: |
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bool m_isTemp; |
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void DivNormalized (const BigNum & a, const BigNum & b, BigNum * remainder); |
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void ModNormalized (const BigNum & a, const BigNum & b); |
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inline static DVal Mul (Val a, Val b); |
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inline void SetVal (unsigned index, Val value); |
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inline void SetVal (unsigned index, DVal value, Val * carry); |
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inline void Trim (unsigned count); |
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inline BigNum * UseTempAlloc (Val * ptr, unsigned count); |
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public: |
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BigNum (); |
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BigNum (const BigNum & a); |
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BigNum (unsigned a); |
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BigNum (unsigned bytes, const void * data); |
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BigNum (const wchar str[], Val radix); |
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~BigNum (); |
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// Constant parameters need not be distinct from the destination or from |
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// each other |
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void Add (const BigNum & a, Val b); |
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void Add (const BigNum & a, const BigNum & b); |
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int Compare (Val a) const; |
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int Compare (const BigNum & a) const; |
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void Div (const BigNum & a, Val b, Val * remainder); |
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void Div (const BigNum & a, const BigNum & b, BigNum * remainder); |
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void FromData (unsigned bytes, const void * data); |
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void FromStr (const wchar str[], Val radix); |
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void Gcd (const BigNum & a, const BigNum & b); |
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const void * GetData (unsigned * bytes) const; |
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unsigned HighBitPos () const; |
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bool InverseMod (const BigNum & a, const BigNum & b); |
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bool IsMultiple (Val a) const; |
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bool IsOdd () const; |
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bool IsPrime () const; |
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unsigned LowBitPos () const; |
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void Mod (const BigNum & a, const BigNum & b); |
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void Mul (const BigNum & a, Val b); |
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void Mul (const BigNum & a, const BigNum & b); |
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void MulMod (const BigNum & a, const BigNum & b, const BigNum & c); |
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void PowMod (Val a, const BigNum & b, const BigNum & c); |
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void PowMod (const BigNum & a, const BigNum & b, const BigNum & c); |
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void Rand (const BigNum & a, BigNum * seed); |
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void Rand (unsigned bits, BigNum * seed); |
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void RandPrime (unsigned bits, BigNum * seed); |
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void Set (const BigNum & a); |
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void Set (unsigned a); |
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void SetBits (unsigned setBitsOffset, unsigned setBitsCount); |
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void SetOne (); |
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void SetZero (); |
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void Shl (const BigNum & a, unsigned b); |
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void Shr (const BigNum & a, unsigned b); |
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void Square (const BigNum & a); |
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void Sub (const BigNum & a, Val b); |
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void Sub (const BigNum & a, const BigNum & b); |
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void ToStr (BigNum * buffer, Val radix) const; |
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};
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