File indexing completed on 2024-05-12 05:55:18
0001 // This file is part of the SpeedCrunch project 0002 // Copyright (C) 2015 Pol Welter <polwelter@gmail.com> 0003 // 0004 // This program is free software; you can redistribute it and/or 0005 // modify it under the terms of the GNU General Public License 0006 // as published by the Free Software Foundation; either version 2 0007 // of the License, or (at your option) any later version. 0008 // 0009 // This program is distributed in the hope that it will be useful, 0010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 0011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0012 // GNU General Public License for more details. 0013 // 0014 // You should have received a copy of the GNU General Public License 0015 // along with this program; see the file COPYING. If not, write to 0016 // the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 0017 // Boston, MA 02110-1301, USA. 0018 0019 #ifndef RATIONAL_H 0020 #define RATIONAL_H 0021 0022 class HNumber; 0023 class QString; 0024 0025 class Rational 0026 { 0027 int m_num; 0028 int m_denom; 0029 bool m_valid; 0030 0031 inline int gcd(int a, int b) const {return (b==0) ? a : gcd(b, a%b);} 0032 void normalize(); 0033 int compare(const Rational & other) const; 0034 0035 public: 0036 Rational() : m_num(0), m_denom(1), m_valid(true) {} 0037 Rational(const HNumber &num); 0038 Rational(const double &num); 0039 Rational(const QString & str); 0040 Rational(const int a, const int b) : m_num(a), m_denom(b), m_valid(true) {normalize();} 0041 0042 int numerator() const {return m_num;} 0043 int denominator() const {return m_denom;} 0044 0045 Rational operator*(const Rational & other) const; 0046 Rational operator/(const Rational & other) const; 0047 Rational operator+(const Rational & other) const; 0048 Rational operator-(const Rational & other) const; 0049 Rational &operator=(const Rational & other); 0050 Rational &operator+=(const Rational & other); 0051 Rational &operator-=(const Rational & other); 0052 Rational &operator*=(const Rational & other); 0053 Rational &operator/=(const Rational & other); 0054 bool operator<(const Rational & other) const; 0055 bool operator==(const Rational & other) const; 0056 bool operator!=(const Rational & other) const {return !operator==(other);} 0057 bool operator>(const Rational & other) const; 0058 0059 bool isZero() const; 0060 bool isValid() const; 0061 0062 QString toString() const; 0063 HNumber toHNumber( )const; 0064 double toDouble() const; 0065 }; 0066 0067 #endif // RATIONAL_H