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114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef COMMON_RATIONAL_H
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#define COMMON_RATIONAL_H
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#include "common/scummsys.h"
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#include "common/frac.h"
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namespace Common {
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/** A simple rational class that holds fractions. */
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class Rational {
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public:
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Rational();
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Rational(int num);
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Rational(int num, int denom);
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Rational(const Rational &rational);
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Rational &operator=(const Rational &right);
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Rational &operator=(int right);
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Rational &operator+=(const Rational &right);
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Rational &operator-=(const Rational &right);
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Rational &operator*=(const Rational &right);
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Rational &operator/=(const Rational &right);
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Rational &operator+=(int right);
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Rational &operator-=(int right);
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Rational &operator*=(int right);
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Rational &operator/=(int right);
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const Rational operator-() const;
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const Rational operator+(const Rational &right) const;
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const Rational operator-(const Rational &right) const;
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const Rational operator*(const Rational &right) const;
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const Rational operator/(const Rational &right) const;
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const Rational operator+(int right) const;
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const Rational operator-(int right) const;
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const Rational operator*(int right) const;
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const Rational operator/(int right) const;
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bool operator==(const Rational &right) const;
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bool operator!=(const Rational &right) const;
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bool operator>(const Rational &right) const;
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bool operator<(const Rational &right) const;
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bool operator>=(const Rational &right) const;
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bool operator<=(const Rational &right) const;
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bool operator==(int right) const;
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bool operator!=(int right) const;
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bool operator>(int right) const;
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bool operator<(int right) const;
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bool operator>=(int right) const;
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bool operator<=(int right) const;
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void invert();
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Rational getInverse() const;
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int toInt() const;
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double toDouble() const;
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frac_t toFrac() const;
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int getNumerator() const { return _num; }
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int getDenominator() const { return _denom; }
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bool isOne() const { return _num == _denom; }
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void debugPrint(int debuglevel = 0, const char *caption = "Rational:") const;
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private:
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int _num;
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int _denom;
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void cancel();
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};
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const Rational operator+(int left, const Rational &right);
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const Rational operator-(int left, const Rational &right);
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const Rational operator*(int left, const Rational &right);
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const Rational operator/(int left, const Rational &right);
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bool operator==(int left, const Rational &right);
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bool operator!=(int left, const Rational &right);
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bool operator>(int left, const Rational &right);
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bool operator<(int left, const Rational &right);
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bool operator>=(int left, const Rational &right);
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bool operator<=(int left, const Rational &right);
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} // End of namespace Common
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#endif
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