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76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
//
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// FILE: fraction.h
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.07
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// PURPOSE: demo library for fractions for Arduino
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// URL:
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//
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// Released to the public domain
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//
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#ifndef Fraction_h
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#define Fraction_h
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#include "Arduino.h"
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#define FRACTIONLIBVERSION "0.1.07"
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class Fraction: public Printable
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{
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public:
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Fraction(double);
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Fraction(int32_t, int32_t);
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Fraction(int32_t p) : n(p), d(1) {}
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Fraction(int16_t p) : n(p), d(1) {}
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Fraction(int8_t p) : n(p), d(1) {}
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Fraction(uint32_t p) : n(p), d(1) {}
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Fraction(uint16_t p) : n(p), d(1) {}
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Fraction(uint8_t p) : n(p), d(1) {}
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Fraction(const Fraction &f) : n(f.n), d(f.d) {}
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size_t printTo(Print& p) const;
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// equalities
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bool operator == (const Fraction&);
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bool operator != (const Fraction&);
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bool operator > (const Fraction&);
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bool operator >= (const Fraction&);
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bool operator < (const Fraction&);
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bool operator <= (const Fraction&);
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// negation
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Fraction operator - ();
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// basic math
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Fraction operator + (const Fraction&);
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Fraction operator - (const Fraction&);
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Fraction operator * (const Fraction&);
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Fraction operator / (const Fraction&);
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Fraction& operator += (const Fraction&);
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Fraction& operator -= (const Fraction&);
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Fraction& operator *= (const Fraction&);
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Fraction& operator /= (const Fraction&);
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double toDouble();
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bool isProper(); // abs(f) < 1
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double toAngle();
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static Fraction mediant(const Fraction&, const Fraction&);
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// approximate a fraction with defined denominator
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static Fraction setDenominator(const Fraction&, uint16_t);
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protected:
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void simplify();
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double fractionize(double);
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int32_t gcd(int32_t, int32_t);
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int32_t n;
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int32_t d;
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};
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#endif
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//
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// -- END OF FILE --
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//
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