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1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Symbian Foundation License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // e32test\math\largeint.h |
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15 // |
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16 // |
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17 |
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18 #ifndef __LARGEINT_H__ |
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19 #define __LARGEINT_H__ |
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20 #include <e32std.h> |
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21 |
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22 #define __ASSERT(c) __ASSERT_DEBUG(c,User::Invariant()) |
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23 |
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24 class TLargeIntBase |
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25 { |
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26 public: |
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27 enum TMode {EZeroExtend,ESignExtend,ETruncate}; |
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28 TLargeIntBase(TInt n); |
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29 TLargeIntBase(TInt n, TInt32 aSigned32); |
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30 TLargeIntBase(TInt n, TUint32 aUnsigned32); |
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31 TLargeIntBase(TInt n, const TLargeIntBase&, TMode); |
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32 TLargeIntBase(TInt n, const TUint32* aPtr); |
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33 TLargeIntBase(TInt n, const Int64& aSigned64); |
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34 TLargeIntBase(TInt n, const Uint64& aUnsigned64); |
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35 public: |
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36 void Not(); |
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37 void Neg(); |
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38 void Abs(); |
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39 void Inc(); |
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40 void Dec(); |
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41 TUint32 Lsl(); |
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42 TUint32 Lsr(); |
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43 TUint32 Asr(); |
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44 void Lsl(TInt aCount); |
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45 void Lsr(TInt aCount); |
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46 void Asr(TInt aCount); |
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47 void Add(const TLargeIntBase&); |
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48 void Sub(const TLargeIntBase&); |
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49 void Mul(const TLargeIntBase&); |
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50 void DivU(const TLargeIntBase& aDivisor, TLargeIntBase& aRem); |
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51 void DivS(const TLargeIntBase& aDivisor, TLargeIntBase& aRem); |
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52 TInt CompareU(const TLargeIntBase&) const; |
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53 TInt CompareS(const TLargeIntBase&) const; |
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54 inline TLargeIntBase& operator++() {Inc(); return *this;} |
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55 inline TLargeIntBase& operator--() {Dec(); return *this;} |
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56 public: |
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57 inline TBool operator==(const TLargeIntBase& a) const |
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58 {return CompareU(a)==0;} |
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59 inline TBool operator!=(const TLargeIntBase& a) const |
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60 {return CompareU(a)!=0;} |
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61 inline TBool Hi(const TLargeIntBase& a) const |
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62 {return CompareU(a)>0;} |
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63 inline TBool Hs(const TLargeIntBase& a) const |
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64 {return CompareU(a)>=0;} |
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65 inline TBool Lo(const TLargeIntBase& a) const |
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66 {return CompareU(a)<0;} |
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67 inline TBool Ls(const TLargeIntBase& a) const |
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68 {return CompareU(a)<=0;} |
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69 inline TBool Gt(const TLargeIntBase& a) const |
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70 {return CompareS(a)>0;} |
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71 inline TBool Ge(const TLargeIntBase& a) const |
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72 {return CompareS(a)>=0;} |
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73 inline TBool Lt(const TLargeIntBase& a) const |
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74 {return CompareS(a)<0;} |
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75 inline TBool Le(const TLargeIntBase& a) const |
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76 {return CompareS(a)<=0;} |
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77 inline TUint32& operator[](TInt a) |
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78 {__ASSERT(TUint32(a)<TUint32(iC)); return iX[a];} |
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79 inline TUint32 operator[](TInt a) const |
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80 {__ASSERT(TUint32(a)<TUint32(iC)); return iX[a];} |
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81 public: |
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82 TInt iC; |
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83 TUint32 iX[1]; |
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84 }; |
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85 |
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86 template <TInt n> |
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87 class TLargeInt : public TLargeIntBase |
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88 { |
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89 public: |
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90 inline TLargeInt() : TLargeIntBase(n) {} |
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91 inline TLargeInt(TInt32 aSigned32) : TLargeIntBase(n,aSigned32) {} |
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92 inline TLargeInt(TUint32 aUnsigned32) : TLargeIntBase(n,aUnsigned32) {} |
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93 inline TLargeInt(const TLargeIntBase& aSrc, TMode aMode) : TLargeIntBase(n,aSrc,aMode) {} |
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94 inline TLargeInt(const TUint32* aPtr) : TLargeIntBase(n, aPtr) {} |
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95 inline TLargeInt(const Int64& aSigned64) : TLargeIntBase(n, aSigned64) {} |
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96 inline TLargeInt(const Uint64& aUnsigned64) : TLargeIntBase(n, aUnsigned64) {} |
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97 inline TLargeInt<2*n> LongMultU(const TLargeInt<n>& a) const |
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98 {TLargeInt<2*n> x(*this,EZeroExtend); TLargeInt<2*n> y(a,EZeroExtend); x.Mul(y); return x;} |
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99 inline TLargeInt<2*n> LongMultS(const TLargeInt<n>& a) const |
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100 {TLargeInt<2*n> x(*this,ESignExtend); TLargeInt<2*n> y(a,ESignExtend); x.Mul(y); return x;} |
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101 public: |
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102 TUint32 iExtra[n-1]; |
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103 }; |
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104 |
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105 #define CHECK(X) void __compile_assert(int __check[(X)?1:-1]) |
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106 |
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107 #endif |