108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
#include "fraction.hpp"
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namespace FractionNS {
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int gcd(int p, int q) {
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while(true) {
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if(p == 0) return q;
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q %= p;
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if(q == 0) return p;
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p %= q;
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}
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}
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int lcm(int p, int q) {
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int gcd = FractionNS::gcd(p, q);
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return gcd != 0 ? (p / gcd * q) : 0;
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}
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int abs(int n) {
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if(n < 0) return -n;
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return n;
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}
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Fraction::Fraction(int numerator, int denominator)
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{
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auto gcd = FractionNS::gcd(FractionNS::abs(numerator), FractionNS::abs(denominator));
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if(denominator < 0) {
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numerator *= -1;
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denominator *= -1;
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}
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this->m_numerator = numerator / gcd;
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this->m_denominator = denominator / gcd;
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}
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Fraction::Fraction(int n) {
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this->m_numerator = n;
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this->m_denominator = 1;
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}
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Fraction::Fraction(float n) {
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// TODO
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throw std::runtime_error("Not yet implemented");
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}
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Fraction::Fraction(const Fraction& n) {
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this->m_numerator = n.getNumerator();
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this->m_denominator = n.getDenominator();
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}
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int Fraction::getNumerator() const { return m_numerator; }
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int Fraction::getDenominator() const { return m_denominator; }
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void Fraction::setNumerator(int numerator) {
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auto gcd = std::__gcd(numerator, this->m_denominator);
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this->m_numerator = numerator / gcd;
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}
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void Fraction::setDenominator(int denominator) {
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auto gcd = std::__gcd(this->m_numerator, denominator);
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this->m_denominator = denominator / gcd;
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}
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QString Fraction::display() const {
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return QString::number(m_numerator) + '/' + QString::number(m_denominator);
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}
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bool Fraction::operator==(const int n) const {
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return (double(m_numerator) / double(m_denominator)) == n;
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}
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bool Fraction::operator==(const float n) const {
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return (double(m_numerator) / double(m_denominator)) == n;
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}
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bool Fraction::operator==(const double n) const {
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return (double(m_numerator) / double(m_denominator)) == n;
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}
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bool Fraction::operator==(const Fraction& n) const {
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return (this->m_numerator == n.getNumerator())
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&& (this->m_denominator == n.getDenominator());
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}
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bool Fraction::operator!=(const int n) const {
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return (double(m_numerator) / double(m_denominator)) != n;
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}
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bool Fraction::operator!=(const float n) const {
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return (double(m_numerator) / double(m_denominator)) != n;
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}
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bool Fraction::operator!=(const double n) const {
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return (double(m_numerator) / double(m_denominator)) != n;
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}
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bool Fraction::operator!=(const Fraction& n) const {
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return (this->m_numerator != n.getNumerator())
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|| (this->m_denominator != n.getDenominator());
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}
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Fraction& Fraction::operator+(const int n) const {
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return Fraction(n) + *this;
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}
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Fraction& Fraction::operator+(const float n) const {
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return Fraction(n) + *this;
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}
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Fraction& Fraction::operator+(const double n) const {
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return Fraction(n) + *this;
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}
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Fraction& Fraction::operator+(const Fraction& other) const {
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auto lcm = FractionNS::lcm(getDenominator(), other.getDenominator());
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return *new Fraction((getNumerator() + other.getNumerator()) * lcm, getDenominator() * lcm);
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}
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}
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