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//=============================================================================
// MusE Score
// Linux Music Score Editor
// $Id:$
//
// Copyright (C) 2009 Werner Schweer and others
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2.
//
// 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.
//=============================================================================
#ifndef __FRACTION_H__
#define __FRACTION_H__
#include "al/al.h"
//---------------------------------------------------------
// Fraction
//---------------------------------------------------------
class Fraction {
int _numerator;
int _denominator;
public:
Fraction(int z = 0, int n = 1);
int numerator() const { return _numerator; }
int denominator() const { return _denominator; }
void setNumerator(int v) { _numerator = v; }
void setDenominator(int v) { _denominator = v; }
void set(int z, int n) { _numerator = z; _denominator = n; }
bool isZero() const { return _numerator == 0; }
bool isValid() const { return _denominator != 0; }
void reduce();
Fraction reduced() const;
// check if two fractions are identical (numerator & denominator)
// == operator checks for equal value:
bool identical(const Fraction& v) const {
return (_numerator == v._numerator) && (_denominator == v._denominator);
}
int ticks() const {
return (_numerator * AL::division * 4 + (_denominator/2)) / _denominator;
}
static Fraction fromTicks(int v);
Fraction& operator+=(const Fraction&);
Fraction& operator-=(const Fraction&);
Fraction& operator*=(const Fraction&);
Fraction& operator*=(int);
Fraction& operator/=(const Fraction&);
Fraction& operator/=(int);
Fraction operator+(const Fraction& v) const { return Fraction(*this) += v; }
Fraction operator-(const Fraction& v) const { return Fraction(*this) -= v; }
Fraction operator*(const Fraction& v) const { return Fraction(*this) *= v; }
Fraction operator*(int v) const { return Fraction(*this) *= v; }
Fraction operator/(const Fraction& v) const { return Fraction(*this) /= v; }
Fraction operator/(int v) const { return Fraction(*this) /= v; }
bool operator<(const Fraction&) const;
bool operator<=(const Fraction&) const;
bool operator>=(const Fraction&) const;
bool operator>(const Fraction&) const;
bool operator==(const Fraction&) const;
bool operator!=(const Fraction&) const;
QString print() const { return QString("%1/%2").arg(_numerator).arg(_denominator); }
};
#endif
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