mpz_rational.h

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/*
Copyright (C) 2013, 2014
Rafael Guglielmetti, rafael.guglielmetti@unifr.ch
*/

/*
This file is part of CoxIter.

CoxIter is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

CoxIter is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with CoxIter. If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef __NUMBER_RATIONAL_H__
#define __NUMBER_RATIONAL_H__

#include <iostream>
#include <string>

using namespace std;

#include "number_template.h"
#include "../string.h"
#ifndef _COMPILE_WITHOUT_REGEXP_
#include "../regexp.h"
#endif
#ifdef _USE_LOCAL_GMP_
#include "gmpxx.h"
#else
#include <gmpxx.h>
#endif

class MPZ_rational : public Number_template
{
    public:
        mpz_class a;
        mpz_class b;

    private:
        void update( );

    public:
        MPZ_rational( );
        
        MPZ_rational( mpz_class a, mpz_class b );
        MPZ_rational( mpz_class a );
        
        MPZ_rational( const int& i );
        #ifndef _COMPILE_WITHOUT_REGEXP_
        MPZ_rational( string szRational );
        #endif
        bool isInteger( ) const;
        bool isCOInteger( ) const;

        bool operator>=( int const& ) const;
        bool operator==( int const& ) const;
        bool operator==( MPZ_rational const& ) const;
        bool operator==( mpz_class const& ) const;
        bool operator!=( MPZ_rational const& ) const;
        
        MPZ_rational& operator=( long int );
        
        MPZ_rational operator+( MPZ_rational const &n ) const;
        MPZ_rational& operator+=( MPZ_rational const &n );

        MPZ_rational operator-( MPZ_rational const &n ) const;
        void opp( MPZ_rational* &_c ) const;
        MPZ_rational& operator-=( MPZ_rational const &n );
        
        MPZ_rational operator*( MPZ_rational const &n ) const;
        MPZ_rational& operator*=( MPZ_rational const &n );

        MPZ_rational operator/( MPZ_rational const &n ) const;
        MPZ_rational& operator/=( MPZ_rational const &n );

        void print( ostream & ) const;  
        
        string to_string( ) const;
};

ostream& operator<<( ostream& , MPZ_rational const & );
//BigInteger gcd( const BigInteger &, const BigInteger & );

#endif