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bigint.h
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bigint.h
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#ifndef __BIGINT_H__
#define __BIGINT_H__
#include <cstdint>
#include <gmpxx.h>
#include <iostream>
#include <vector>
class BigInt {
private:
mpz_class v;
public:
BigInt() : v(mpz_class(0)) {}
template<class T>
BigInt(const T& n) : v(mpz_class(n)) {}
template<class T>
BigInt(const T& n, int base) : v(mpz_class(n, base)) {}
BigInt& operator=(BigInt rhs);
bool operator==(const BigInt& rhs) const;
bool operator!=(const BigInt& rhs) const;
bool operator<(const BigInt& rhs) const;
bool operator>(const BigInt& rhs) const;
bool operator<=(const BigInt& rhs) const;
bool operator>=(const BigInt& rhs) const;
BigInt& operator++();
BigInt operator++(int);
BigInt operator+() const;
BigInt operator-() const;
BigInt operator!() const;
BigInt& operator+=(const BigInt& rhs);
BigInt operator+(const BigInt& rhs) const;
BigInt& operator-=(const BigInt& rhs);
BigInt operator-(const BigInt& rhs) const;
BigInt& operator*=(const BigInt& rhs);
BigInt operator*(const BigInt& rhs) const;
BigInt& operator/=(const BigInt& rhs);
BigInt operator/(const BigInt& rhs) const;
BigInt& operator%=(const BigInt& rhs);
BigInt operator%(const BigInt& rhs) const;
BigInt& operator&=(const BigInt& rhs);
BigInt operator&(const BigInt& rhs) const;
BigInt& operator|=(const BigInt& rhs);
BigInt operator|(const BigInt& rhs) const;
BigInt& operator^=(const BigInt& rhs);
BigInt operator^(const BigInt& rhs) const;
BigInt& operator<<=(const BigInt& rhs);
BigInt operator<<(const BigInt& rhs) const;
BigInt& operator>>=(const BigInt& rhs);
BigInt operator>>(const BigInt& rhs) const;
BigInt pow(const BigInt& p) const;
BigInt powm(const BigInt& p, const BigInt& m) const;
BigInt invm(const BigInt& m) const;
BigInt sqrtm(const BigInt& p) const;
void setbit(const BigInt& i);
void clrbit(const BigInt& i);
int getbit(const BigInt& i) const;
size_t bitwidth() const;
std::string str_in_base(int base) const;
static BigInt from_bytes(const std::vector<uint8_t>& vec);
static std::vector<uint8_t> to_bytes(const BigInt& n);
static BigInt from_string(const std::string& str);
static std::string to_string(const BigInt& n);
friend std::ostream& operator<<(std::ostream& os, const BigInt& n);
friend std::istream& operator>>(std::istream& is, BigInt& n);
};
template<class T>
inline bool operator==(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) == rhs;
}
template<class T>
inline bool operator!=(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) != rhs;
}
template<class T>
inline BigInt operator+(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) += rhs;
}
template<class T>
inline BigInt operator-(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) -= rhs;
}
template<class T>
inline BigInt operator*(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) *= rhs;
}
template<class T>
inline BigInt operator/(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) /= rhs;
}
template<class T>
inline BigInt operator%(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) %= rhs;
}
template<class T>
inline BigInt operator&(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) &= rhs;
}
template<class T>
inline BigInt operator|(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) |= rhs;
}
template<class T>
inline BigInt operator^(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) ^= rhs;
}
template<class T>
inline BigInt operator<<(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) <<= rhs;
}
template<class T>
inline BigInt operator>>(const T& lhs, const BigInt& rhs) {
return BigInt(lhs) >>= rhs;
}
#endif