rational.h

/*
    Copyright (C) 2014-2015 Carl Hetherington <cth@carlh.net>
 
    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, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
*/
 
namespace sub {
 
class Rational
{
public:
    Rational (int numerator_, int denominator_)
        : numerator (numerator_)
        , denominator (denominator_)
    {}
 
    int numerator;
    int denominator;
 
    double fraction () const {
        return double (numerator) / denominator;
    }
 
    bool integer () const;
    int integer_fraction () const {
        return numerator / denominator;
    }
};
 
bool operator== (Rational const & a, Rational const & b);
Rational max (Rational const & a, Rational const & b);
 
}