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113 lines
4.0 KiB
C++
113 lines
4.0 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkLargeInteger.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkLargeInteger
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* @brief class for arbitrarily large ints
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*/
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#ifndef vtkLargeInteger_h
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#define vtkLargeInteger_h
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#include "vtkCommonCoreModule.h" // For export macro
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#include "vtkObject.h"
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class VTKCOMMONCORE_EXPORT VTK_WRAPEXCLUDE vtkLargeInteger
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{
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public:
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vtkLargeInteger(void);
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vtkLargeInteger(long n);
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vtkLargeInteger(unsigned long n);
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vtkLargeInteger(int n);
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vtkLargeInteger(unsigned int n);
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vtkLargeInteger(const vtkLargeInteger& n);
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vtkLargeInteger(long long n);
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vtkLargeInteger(unsigned long long n);
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~vtkLargeInteger(void);
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char CastToChar(void) const;
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short CastToShort(void) const;
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int CastToInt(void) const;
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long CastToLong(void) const;
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unsigned long CastToUnsignedLong(void) const;
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int IsEven(void) const;
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int IsOdd(void) const;
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int GetLength(void) const; // in bits
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int GetBit(unsigned int p) const; // p'th bit (from zero)
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int IsZero() const; // is zero
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int GetSign(void) const; // is negative
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void Truncate(unsigned int n); // reduce to lower n bits
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void Complement(void); // * -1
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bool operator==(const vtkLargeInteger& n) const;
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bool operator!=(const vtkLargeInteger& n) const;
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bool operator<(const vtkLargeInteger& n) const;
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bool operator<=(const vtkLargeInteger& n) const;
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bool operator>(const vtkLargeInteger& n) const;
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bool operator>=(const vtkLargeInteger& n) const;
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vtkLargeInteger& operator=(const vtkLargeInteger& n);
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vtkLargeInteger& operator+=(const vtkLargeInteger& n);
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vtkLargeInteger& operator-=(const vtkLargeInteger& n);
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vtkLargeInteger& operator<<=(int n);
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vtkLargeInteger& operator>>=(int n);
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vtkLargeInteger& operator++(void);
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vtkLargeInteger& operator--(void);
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vtkLargeInteger operator++(int);
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vtkLargeInteger operator--(int);
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vtkLargeInteger& operator*=(const vtkLargeInteger& n);
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vtkLargeInteger& operator/=(const vtkLargeInteger& n);
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vtkLargeInteger& operator%=(const vtkLargeInteger& n);
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// no change of sign for following operators
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vtkLargeInteger& operator&=(const vtkLargeInteger& n);
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vtkLargeInteger& operator|=(const vtkLargeInteger& n);
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vtkLargeInteger& operator^=(const vtkLargeInteger& n);
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vtkLargeInteger operator+(const vtkLargeInteger& n) const;
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vtkLargeInteger operator-(const vtkLargeInteger& n) const;
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vtkLargeInteger operator*(const vtkLargeInteger& n) const;
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vtkLargeInteger operator/(const vtkLargeInteger& n) const;
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vtkLargeInteger operator%(const vtkLargeInteger& n) const;
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// no change of sign for following operators
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vtkLargeInteger operator&(const vtkLargeInteger& n) const;
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vtkLargeInteger operator|(const vtkLargeInteger& n) const;
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vtkLargeInteger operator^(const vtkLargeInteger& n) const;
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vtkLargeInteger operator<<(int n) const;
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vtkLargeInteger operator>>(int n) const;
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friend ostream& operator<<(ostream& s, const vtkLargeInteger& n);
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friend istream& operator>>(istream& s, vtkLargeInteger& n);
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private:
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char* Number;
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int Negative;
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unsigned int Sig;
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unsigned int Max;
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// unsigned operators
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bool IsSmaller(const vtkLargeInteger& n) const; // unsigned
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bool IsGreater(const vtkLargeInteger& n) const; // unsigned
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void Expand(unsigned int n); // ensure n'th bit exits
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void Contract(); // remove leading 0s
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void Plus(const vtkLargeInteger& n); // unsigned
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void Minus(const vtkLargeInteger& n); // unsigned
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};
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#endif
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// VTK-HeaderTest-Exclude: vtkLargeInteger.h
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