120 lines
3.6 KiB
C++
120 lines
3.6 KiB
C++
#pragma once
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#include <QString>
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namespace FractionNS {
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struct divide_by_zero_error : public std::logic_error { divide_by_zero_error() : std::logic_error("tried to divide by zero") {}; };
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struct not_real_error : public std::logic_error { not_real_error() : std::logic_error("value is not a real number") {}; };
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struct not_defined_error : public std::logic_error { not_defined_error() : std::logic_error("operation result is not defined") {}; };
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class Fraction
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{
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private:
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int m_numerator, m_denominator;
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void reduce();
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public:
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Fraction(int, int);
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Fraction(int);
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Fraction(double);
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Fraction(float);
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Fraction(const Fraction&);
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int getNumerator() const;
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int getDenominator() const;
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void setNumerator(const int);
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void setDenominator(const int);
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QString display() const;
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Fraction& inv() const;
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float toFloat() const;
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double toDouble() const;
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// Binary comparison operators
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bool operator==(const int) const;
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bool operator==(const float) const;
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bool operator==(const double) const;
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bool operator==(const Fraction&) const;
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bool operator!=(const int) const;
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bool operator!=(const float) const;
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bool operator!=(const double) const;
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bool operator!=(const Fraction&) const;
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bool operator<(const int) const;
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bool operator<(const float) const;
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bool operator<(const double) const;
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bool operator<(const Fraction&) const;
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bool operator<=(const int) const;
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bool operator<=(const float) const;
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bool operator<=(const double) const;
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bool operator<=(const Fraction&) const;
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bool operator>(const int) const;
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bool operator>(const float) const;
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bool operator>(const double) const;
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bool operator>(const Fraction&) const;
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bool operator>=(const int) const;
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bool operator>=(const float) const;
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bool operator>=(const double) const;
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bool operator>=(const Fraction&) const;
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// <=> would go here
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// Method versions of operators
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Fraction& add(const Fraction&) const;
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Fraction& add(const int) const;
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Fraction& sub(const Fraction&) const;
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Fraction& sub(const int) const;
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Fraction& mul(const Fraction&) const;
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Fraction& mul(const int) const;
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Fraction& div(const Fraction&) const;
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Fraction& div(const int) const;
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Fraction& inc();
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Fraction& dec();
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// Binary math operators
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Fraction& operator+(const int) const;
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Fraction& operator+(const Fraction&) const;
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Fraction& operator+=(const int);
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Fraction& operator+=(const Fraction&);
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Fraction& operator-(const int) const;
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Fraction& operator-(const Fraction&) const;
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Fraction& operator-=(const int);
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Fraction& operator-=(const Fraction&);
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Fraction& operator*(const int) const;
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Fraction& operator*(const Fraction&) const;
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Fraction& operator*=(const int);
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Fraction& operator*=(const Fraction&);
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Fraction& operator/(const int) const;
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Fraction& operator/(const Fraction&) const;
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Fraction& operator/=(const int);
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Fraction& operator/=(const Fraction&);
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// Maybe replace with ^ operator, as it's unused for this class.
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// Might be syntactically not-so-nice though?
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// Python uses / for combining paths, does cpp do something similar anywhere?
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// How does one raise a Fraction to a power while keeping it a Fraction (avoid double return type)
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double pow(const int) const;
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double pow(const Fraction&) const;
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// Unary operators
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Fraction& operator-() const;
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Fraction& operator+() const; // Should return a copy of the Fraction.
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Fraction& operator++(); // ++x
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Fraction& operator++(const int); // x++
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Fraction& operator--(); // --x
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Fraction& operator--(const int); // x--
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};
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}
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