/* ScummVM - Graphic Adventure Engine * * ScummVM is the legal property of its developers, whose names * are too numerous to list here. Please refer to the COPYRIGHT * file distributed with this source distribution. * * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * $URL$ * $Id$ */ #ifndef COMMON_RATIONAL_H #define COMMON_RATIONAL_H #include "common/scummsys.h" #include "common/frac.h" namespace Common { /** A simple rational class that holds fractions. */ 00034 class Rational { public: Rational(); Rational(int num); Rational(int num, int denom); Rational &operator=(const Rational &right); Rational &operator=(int right); Rational &operator+=(const Rational &right); Rational &operator-=(const Rational &right); Rational &operator*=(const Rational &right); Rational &operator/=(const Rational &right); Rational &operator+=(int right); Rational &operator-=(int right); Rational &operator*=(int right); Rational &operator/=(int right); const Rational operator-() const; const Rational operator+(const Rational &right) const; const Rational operator-(const Rational &right) const; const Rational operator*(const Rational &right) const; const Rational operator/(const Rational &right) const; const Rational operator+(int right) const; const Rational operator-(int right) const; const Rational operator*(int right) const; const Rational operator/(int right) const; bool operator==(const Rational &right) const; bool operator!=(const Rational &right) const; bool operator>(const Rational &right) const; bool operator<(const Rational &right) const; bool operator>=(const Rational &right) const; bool operator<=(const Rational &right) const; bool operator==(int right) const; bool operator!=(int right) const; bool operator>(int right) const; bool operator<(int right) const; bool operator>=(int right) const; bool operator<=(int right) const; void invert(); Rational getInverse() const; int toInt() const; double toDouble() const; frac_t toFrac() const; void debugPrint(int debuglevel = 0, const char *caption = "Rational:") const; private: int _num; int _denom; void cancel(); }; const Rational operator+(int left, const Rational &right); const Rational operator-(int left, const Rational &right); const Rational operator*(int left, const Rational &right); const Rational operator/(int left, const Rational &right); bool operator==(int left, const Rational &right); bool operator!=(int left, const Rational &right); bool operator>(int left, const Rational &right); bool operator<(int left, const Rational &right); bool operator>=(int left, const Rational &right); bool operator<=(int left, const Rational &right); } // End of namespace Common #endif

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