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// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32test\math\largeint.h
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//
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//
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#ifndef __LARGEINT_H__
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#define __LARGEINT_H__
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#include <e32std.h>
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#define __ASSERT(c) __ASSERT_DEBUG(c,User::Invariant())
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class TLargeIntBase
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{
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public:
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enum TMode {EZeroExtend,ESignExtend,ETruncate};
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TLargeIntBase(TInt n);
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TLargeIntBase(TInt n, TInt32 aSigned32);
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TLargeIntBase(TInt n, TUint32 aUnsigned32);
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TLargeIntBase(TInt n, const TLargeIntBase&, TMode);
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TLargeIntBase(TInt n, const TUint32* aPtr);
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TLargeIntBase(TInt n, const Int64& aSigned64);
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TLargeIntBase(TInt n, const Uint64& aUnsigned64);
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public:
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void Not();
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void Neg();
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void Abs();
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void Inc();
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void Dec();
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TUint32 Lsl();
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TUint32 Lsr();
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TUint32 Asr();
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void Lsl(TInt aCount);
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void Lsr(TInt aCount);
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void Asr(TInt aCount);
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void Add(const TLargeIntBase&);
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void Sub(const TLargeIntBase&);
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void Mul(const TLargeIntBase&);
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void DivU(const TLargeIntBase& aDivisor, TLargeIntBase& aRem);
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void DivS(const TLargeIntBase& aDivisor, TLargeIntBase& aRem);
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TInt CompareU(const TLargeIntBase&) const;
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TInt CompareS(const TLargeIntBase&) const;
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inline TLargeIntBase& operator++() {Inc(); return *this;}
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inline TLargeIntBase& operator--() {Dec(); return *this;}
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public:
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inline TBool operator==(const TLargeIntBase& a) const
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{return CompareU(a)==0;}
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inline TBool operator!=(const TLargeIntBase& a) const
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{return CompareU(a)!=0;}
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inline TBool Hi(const TLargeIntBase& a) const
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{return CompareU(a)>0;}
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inline TBool Hs(const TLargeIntBase& a) const
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{return CompareU(a)>=0;}
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inline TBool Lo(const TLargeIntBase& a) const
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{return CompareU(a)<0;}
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inline TBool Ls(const TLargeIntBase& a) const
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{return CompareU(a)<=0;}
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inline TBool Gt(const TLargeIntBase& a) const
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{return CompareS(a)>0;}
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inline TBool Ge(const TLargeIntBase& a) const
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{return CompareS(a)>=0;}
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inline TBool Lt(const TLargeIntBase& a) const
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{return CompareS(a)<0;}
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inline TBool Le(const TLargeIntBase& a) const
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{return CompareS(a)<=0;}
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inline TUint32& operator[](TInt a)
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{__ASSERT(TUint32(a)<TUint32(iC)); return iX[a];}
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inline TUint32 operator[](TInt a) const
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{__ASSERT(TUint32(a)<TUint32(iC)); return iX[a];}
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public:
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TInt iC;
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TUint32 iX[1];
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};
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template <TInt n>
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class TLargeInt : public TLargeIntBase
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{
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public:
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inline TLargeInt() : TLargeIntBase(n) {}
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inline TLargeInt(TInt32 aSigned32) : TLargeIntBase(n,aSigned32) {}
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inline TLargeInt(TUint32 aUnsigned32) : TLargeIntBase(n,aUnsigned32) {}
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inline TLargeInt(const TLargeIntBase& aSrc, TMode aMode) : TLargeIntBase(n,aSrc,aMode) {}
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inline TLargeInt(const TUint32* aPtr) : TLargeIntBase(n, aPtr) {}
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inline TLargeInt(const Int64& aSigned64) : TLargeIntBase(n, aSigned64) {}
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inline TLargeInt(const Uint64& aUnsigned64) : TLargeIntBase(n, aUnsigned64) {}
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inline TLargeInt<2*n> LongMultU(const TLargeInt<n>& a) const
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{TLargeInt<2*n> x(*this,EZeroExtend); TLargeInt<2*n> y(a,EZeroExtend); x.Mul(y); return x;}
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inline TLargeInt<2*n> LongMultS(const TLargeInt<n>& a) const
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{TLargeInt<2*n> x(*this,ESignExtend); TLargeInt<2*n> y(a,ESignExtend); x.Mul(y); return x;}
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public:
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TUint32 iExtra[n-1];
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};
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#define CHECK(X) void __compile_assert(int __check[(X)?1:-1])
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#endif
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