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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkLargeInteger
* @brief class for arbitrarily large ints
*/
#ifndef vtkLargeInteger_h
#define vtkLargeInteger_h
#include "vtkCommonCoreModule.h" // For export macro
#include "vtkObject.h"
VTK_ABI_NAMESPACE_BEGIN
class VTKCOMMONCORE_EXPORT VTK_WRAPEXCLUDE vtkLargeInteger
{
public:
vtkLargeInteger();
vtkLargeInteger(long n);
vtkLargeInteger(unsigned long n);
vtkLargeInteger(int n);
vtkLargeInteger(unsigned int n);
vtkLargeInteger(const vtkLargeInteger& n);
vtkLargeInteger(long long n);
vtkLargeInteger(unsigned long long n);
~vtkLargeInteger();
char CastToChar() const;
short CastToShort() const;
int CastToInt() const;
long CastToLong() const;
unsigned long CastToUnsignedLong() const;
int IsEven() const;
int IsOdd() const;
int GetLength() const; // in bits
int GetBit(unsigned int p) const; // p'th bit (from zero)
int IsZero() const; // is zero
int GetSign() const; // is negative
void Truncate(unsigned int n); // reduce to lower n bits
void Complement(); // * -1
bool operator==(const vtkLargeInteger& n) const;
bool operator!=(const vtkLargeInteger& n) const;
bool operator<(const vtkLargeInteger& n) const;
bool operator<=(const vtkLargeInteger& n) const;
bool operator>(const vtkLargeInteger& n) const;
bool operator>=(const vtkLargeInteger& n) const;
vtkLargeInteger& operator=(const vtkLargeInteger& n);
vtkLargeInteger& operator+=(const vtkLargeInteger& n);
vtkLargeInteger& operator-=(const vtkLargeInteger& n);
vtkLargeInteger& operator<<=(int n);
vtkLargeInteger& operator>>=(int n);
vtkLargeInteger& operator++();
vtkLargeInteger& operator--();
vtkLargeInteger operator++(int);
vtkLargeInteger operator--(int);
vtkLargeInteger& operator*=(const vtkLargeInteger& n);
vtkLargeInteger& operator/=(const vtkLargeInteger& n);
vtkLargeInteger& operator%=(const vtkLargeInteger& n);
// no change of sign for following operators
vtkLargeInteger& operator&=(const vtkLargeInteger& n);
vtkLargeInteger& operator|=(const vtkLargeInteger& n);
vtkLargeInteger& operator^=(const vtkLargeInteger& n);
vtkLargeInteger operator+(const vtkLargeInteger& n) const;
vtkLargeInteger operator-(const vtkLargeInteger& n) const;
vtkLargeInteger operator*(const vtkLargeInteger& n) const;
vtkLargeInteger operator/(const vtkLargeInteger& n) const;
vtkLargeInteger operator%(const vtkLargeInteger& n) const;
// no change of sign for following operators
vtkLargeInteger operator&(const vtkLargeInteger& n) const;
vtkLargeInteger operator|(const vtkLargeInteger& n) const;
vtkLargeInteger operator^(const vtkLargeInteger& n) const;
vtkLargeInteger operator<<(int n) const;
vtkLargeInteger operator>>(int n) const;
friend ostream& operator<<(ostream& s, const vtkLargeInteger& n);
friend istream& operator>>(istream& s, vtkLargeInteger& n);
private:
char* Number;
int Negative;
unsigned int Sig;
unsigned int Max;
// unsigned operators
bool IsSmaller(const vtkLargeInteger& n) const; // unsigned
bool IsGreater(const vtkLargeInteger& n) const; // unsigned
void Expand(unsigned int n); // ensure n'th bit exits
void Contract(); // remove leading 0s
void Plus(const vtkLargeInteger& n); // unsigned
void Minus(const vtkLargeInteger& n); // unsigned
};
VTK_ABI_NAMESPACE_END
#endif
// VTK-HeaderTest-Exclude: vtkLargeInteger.h
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