/*
Copyright (C) 2001 - 2013 Evan Teran
                          evan.teran@gmail.com

This program 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 2 of the License, or
(at your option) any later version.

This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef KNUMBER_FRACTION_H_
#define KNUMBER_FRACTION_H_

#include "knumber_base.h"

class KNumber;

namespace detail {

class knumber_fraction : public knumber_base {
    friend class ::KNumber;
    friend class knumber_error;
    friend class knumber_integer;
    friend class knumber_float;

public:
    static bool default_fractional_input;
    static bool default_fractional_output;
    static bool split_off_integer_for_fraction_output;

public:
    static void set_default_fractional_input(bool value);
    static void set_default_fractional_output(bool value);
    static void set_split_off_integer_for_fraction_output(bool value);

public:
    explicit knumber_fraction(const QString &s);
    knumber_fraction(qint64 num, quint64 den);
    knumber_fraction(quint64 num, quint64 den);
    explicit knumber_fraction(mpq_t mpq);
    virtual ~knumber_fraction();

public:
    virtual knumber_base *clone();

public:
    virtual QString toString(int precision) const;
    virtual quint64 toUint64() const;
    virtual qint64 toInt64() const;

public:
    virtual bool is_integer() const;
    virtual bool is_zero() const;
    virtual int sign() const;

public:
    virtual knumber_base *add(knumber_base *rhs);
    virtual knumber_base *sub(knumber_base *rhs);
    virtual knumber_base *mul(knumber_base *rhs);
    virtual knumber_base *div(knumber_base *rhs);
    virtual knumber_base *mod(knumber_base *rhs);

public:
    virtual knumber_base *bitwise_and(knumber_base *rhs);
    virtual knumber_base *bitwise_xor(knumber_base *rhs);
    virtual knumber_base *bitwise_or(knumber_base *rhs);
    virtual knumber_base *bitwise_shift(knumber_base *rhs);

public:
    virtual knumber_base *pow(knumber_base *rhs);
    virtual knumber_base *neg();
    virtual knumber_base *cmp();
    virtual knumber_base *abs();
    virtual knumber_base *sqrt();
    virtual knumber_base *cbrt();
    virtual knumber_base *factorial();
    virtual knumber_base *reciprocal();
    virtual knumber_base *tgamma();

public:
    virtual knumber_base *log2();
    virtual knumber_base *log10();
    virtual knumber_base *ln();
    virtual knumber_base *exp2();
    virtual knumber_base *floor();
    virtual knumber_base *ceil();
    virtual knumber_base *exp10();
    virtual knumber_base *exp();
    virtual knumber_base *bin(knumber_base *rhs);

public:
    virtual knumber_base *sin();
    virtual knumber_base *cos();
    virtual knumber_base *tan();
    virtual knumber_base *asin();
    virtual knumber_base *acos();
    virtual knumber_base *atan();
    virtual knumber_base *sinh();
    virtual knumber_base *cosh();
    virtual knumber_base *tanh();
    virtual knumber_base *asinh();
    virtual knumber_base *acosh();
    virtual knumber_base *atanh();

public:
    virtual int compare(knumber_base *rhs);

private:
    knumber_integer *numerator() const;
    knumber_integer *denominator() const;

private:
    // conversion constructors
    explicit knumber_fraction(const knumber_integer *value);
    explicit knumber_fraction(const knumber_fraction *value);
#if 0
    // TODO: this is omitted because there is no good way to
    // implement it
    knumber_fraction(const knumber_float *value);
#endif
    explicit knumber_fraction(const knumber_error *value);

private:
    mpq_t mpq_;
};

}

#endif