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/*
* Copyright 2007-2008 Ben Boeckel <MathStuf@gmail.com>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/**
* \file sigcore/Fraction.cpp
*/
// Header include
#include "Fraction.h"
Sigcore::Fraction::Fraction(const int numerator, const int denominator)
{
set(numerator, denominator);
}
Sigcore::Fraction::Fraction(const Fraction& fraction)
{
set(fraction.numerator(), fraction.denominator());
}
void Sigcore::Fraction::set(const int numerator, const int denominator)
{
m_numerator = numerator;
m_denominator = denominator;
normalize();
}
void Sigcore::Fraction::setNumerator(const int numerator)
{
set(numerator, m_denominator);
}
void Sigcore::Fraction::setDenominator(const int denominator)
{
set(m_numerator, denominator);
}
int Sigcore::Fraction::numerator() const
{
return m_numerator;
}
int Sigcore::Fraction::denominator() const
{
return m_denominator;
}
void Sigcore::Fraction::reduce()
{
if (!m_numerator || !m_denominator)
return;
int i = m_numerator;
int j = m_denominator;
if (i < 0)
i = -i;
while (i - j)
(i > j) ? (i -= j) : (j -= i);
m_numerator /= i;
m_denominator /= i;
}
bool Sigcore::Fraction::poll() const
{
return (qrand() % m_denominator) < m_numerator;
}
bool Sigcore::Fraction::poll(const int numerator, const int denominator)
{
return (qrand() % denominator) < numerator;
}
Sigcore::Fraction& Sigcore::Fraction::operator=(const Fraction& rhs)
{
if (this == &rhs)
return *this;
m_numerator = rhs.m_numerator;
m_denominator = rhs.m_denominator;
return *this;
}
Sigcore::Fraction::operator double() const
{
return (double(m_numerator) / m_denominator);
}
Sigcore::Fraction Sigcore::Fraction::operator+(const Fraction& rhs) const
{
return Fraction((m_numerator * rhs.m_denominator) + (m_denominator * rhs.m_numerator), m_denominator * rhs.m_denominator);
}
Sigcore::Fraction Sigcore::Fraction::operator-(const Fraction& rhs) const
{
return Fraction((m_numerator * rhs.m_denominator) - (m_denominator * rhs.m_numerator), m_denominator * rhs.m_denominator);
}
Sigcore::Fraction Sigcore::Fraction::operator*(const Fraction& rhs) const
{
return Fraction(m_numerator * rhs.m_numerator, m_denominator * rhs.m_denominator);
}
Sigcore::Fraction Sigcore::Fraction::operator/(const Fraction& rhs) const
{
return Fraction(m_numerator * rhs.m_denominator, m_denominator * rhs.m_numerator);
}
Sigcore::Fraction& Sigcore::Fraction::operator+=(const Fraction& rhs)
{
return *this = *this + rhs;
}
Sigcore::Fraction& Sigcore::Fraction::operator-=(const Fraction& rhs)
{
return *this = *this - rhs;
}
Sigcore::Fraction& Sigcore::Fraction::operator*=(const Fraction& rhs)
{
return *this = *this * rhs;
}
Sigcore::Fraction& Sigcore::Fraction::operator/=(const Fraction& rhs)
{
return *this = *this / rhs;
}
bool Sigcore::Fraction::operator==(const Fraction& rhs) const
{
return ((m_numerator * rhs.m_denominator) == (m_denominator * rhs.m_numerator));
}
bool Sigcore::Fraction::operator!=(const Fraction& rhs) const
{
return !(*this == rhs);
}
bool Sigcore::Fraction::operator<(const Fraction& rhs) const
{
return ((m_numerator * rhs.m_denominator) < (m_denominator * rhs.m_numerator));
}
bool Sigcore::Fraction::operator<=(const Fraction& rhs) const
{
return ((m_numerator * rhs.m_denominator) <= (m_denominator * rhs.m_numerator));
}
bool Sigcore::Fraction::operator>(const Fraction& rhs) const
{
return !(*this <= rhs);
}
bool Sigcore::Fraction::operator>=(const Fraction& rhs) const
{
return !(*this < rhs);
}
void Sigcore::Fraction::normalize()
{
if (m_denominator < 0)
{
m_denominator = -m_denominator;
m_numerator = -m_numerator;
}
}
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