80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
#pragma once
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#ifndef SJTU_BIGINTEGER
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#define SJTU_BIGINTEGER
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#include <complex>
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#include <cstdio>
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#include <cstring>
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#include <iostream>
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#include <vector>
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namespace sjtu {
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class int2048 {
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/**
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* If the interger is negative, flag = -1, otherwise flag = 1.
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* num_length is the length of the integer, (num_length+kNum-1)/kNum is the
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* length of val with data. Note that position in val without data is 0.
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*/
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size_t buf_length = 0;
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const static int kMod = 100000000, kNum = 8, kDefaultLength = 10;
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const static int kMemAdditionScalar = 2, kMemDeleteScalar = 4;
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int *val = nullptr;
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signed char flag = +1;
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int num_length = 0;
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public:
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int2048();
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int2048(long long);
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int2048(const std::string &);
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int2048(const int2048 &);
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int2048 (int2048 &&) noexcept;
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~int2048();
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void read(const std::string &);
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void print();
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void ClaimMem(size_t);
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inline friend int UnsignedCmp(const int2048 &A,const int2048 &B);
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inline friend void UnsignedAdd(int2048 &,const int2048 *pB);
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inline friend void UnsignedMinus(int2048 &,const int2048 *pB);
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int2048 &add(const int2048 &);
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friend int2048 add(int2048, const int2048 &);
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int2048 &minus(const int2048 &);
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friend int2048 minus(int2048, const int2048 &);
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int2048 operator+() const;
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int2048 operator-() const;
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int2048 &operator=(const int2048 &);
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int2048 &operator=(int2048 &&) noexcept;
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int2048 &operator+=(const int2048 &);
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friend int2048 operator+(int2048, const int2048 &);
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int2048 &operator-=(const int2048 &);
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friend int2048 operator-(int2048, const int2048 &);
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int2048 &operator*=(const int2048 &);
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friend int2048 operator*(int2048, const int2048 &);
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int2048 &operator/=(const int2048 &);
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friend int2048 operator/(int2048, const int2048 &);
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int2048 &operator%=(const int2048 &);
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friend int2048 operator%(int2048, const int2048 &);
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friend std::istream &operator>>(std::istream &, int2048 &);
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friend std::ostream &operator<<(std::ostream &, const int2048 &);
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friend bool operator==(const int2048 &, const int2048 &);
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friend bool operator!=(const int2048 &, const int2048 &);
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friend bool operator<(const int2048 &, const int2048 &);
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friend bool operator>(const int2048 &, const int2048 &);
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friend bool operator<=(const int2048 &, const int2048 &);
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friend bool operator>=(const int2048 &, const int2048 &);
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};
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} // namespace sjtu
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#endif |