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#ifndef _BIGINT_H
#define _BIGINT_H
#include <cassert>
#include <cstdlib>
#include <iostream>
#include <gmp.h>
//#include <bigrand.h>
using namespace std;
class bigint
{
friend class bigrational;
friend class bigreal;
friend class bigcomplex;
mpz_t rep;
// constructor, assignment and destructor
bigint(const mpz_t);
// conversion
double frexp(long*) const;
// arithmetic
bigint add(const bigint&) const;
bigint sub(const bigint&) const;
bigint mul(const bigint&) const;
bigint div(const bigint&) const;
void inc();
void dec();
bigint lshift(const unsigned long) const;
bigint rshift(const unsigned long) const;
bigint neg() const;
bigint abs() const;
bigint root(const unsigned long) const;
bigint sqrt() const;
// comparison
int cmp(const bigint&) const;
int sgn() const;
// bit
bigint AND(const bigint&) const;
bigint IOR(const bigint&) const;
bigint XOR(const bigint&) const;
// algebra
bigint gcd(const bigint&) const;
bigint lcm(const bigint&) const;
public:
// constructor, assignment and destructor
bigint();
bigint(const unsigned int);
bigint(const signed int);
bigint(const unsigned long);
bigint(const signed long);
bigint(const double);
bigint(const char*);
bigint(const bigint&);
bigint& operator =(const bigint&);
~bigint();
// random
// friend bigint rand();
// conversion
unsigned long len() const;
int fits_long() const;
long as_long() const;
int fits_unsigned_long() const;
unsigned long as_unsigned_long() const;
friend double frexp(const bigint&, long*);
friend long lb4lgAbs(const bigint&);
friend long ub4lgAbs(const bigint&);
// arithmetic
friend bigint operator +(const bigint&, const bigint&);
friend bigint operator -(const bigint&, const bigint&);
friend bigint operator *(const bigint&, const bigint&);
friend bigint operator /(const bigint&, const bigint&);
bigint& operator ++(); // prefix
bigint operator ++(int); // postfix
bigint& operator --(); // prefix
bigint operator --(int); // postfix
friend bigint operator <<(const bigint&, const unsigned long);
friend bigint operator >>(const bigint&, const unsigned long);
friend bigint operator -(const bigint&);
friend bigint abs(const bigint&);
friend bigint root(const bigint&, const unsigned long);
friend bigint sqrt(const bigint&);
// comparison
friend int operator ==(const bigint&, const bigint&);
friend int operator !=(const bigint&, const bigint&);
friend int operator <(const bigint&, const bigint&);
friend int operator <=(const bigint&, const bigint&);
friend int operator >(const bigint&, const bigint&);
friend int operator >=(const bigint&, const bigint&);
friend int sgn(const bigint&);
friend int operator &&(const bigint&, const bigint&);
friend int operator ||(const bigint&, const bigint&);
friend int operator !(const bigint&);
// bit
friend bigint operator &(const bigint&, const bigint&);
friend bigint operator |(const bigint&, const bigint&);
friend bigint operator ^(const bigint&, const bigint&);
int bit(unsigned long) const;
// algebra
friend bigint gcd(const bigint&, const bigint&);
friend bigint lcm(const bigint&, const bigint&);
// arithmetic and assignment
bigint& operator +=(const bigint&);
bigint& operator -=(const bigint&);
bigint& operator *=(const bigint&);
bigint& operator /=(const bigint&);
bigint& operator <<=(const unsigned long);
bigint& operator >>=(const unsigned long);
bigint& operator &=(const bigint&);
bigint& operator |=(const bigint&);
bigint& operator ^=(const bigint&);
// stream
friend ostream& operator <<(ostream&, const bigint&);
friend istream& operator >>(istream&, bigint&);
};
#endif
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