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https://github.com/RobTillaart/Arduino.git
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164 lines
2.6 KiB
C++
164 lines
2.6 KiB
C++
//
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// FILE: Interval.cpp
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// AUTHOR: Rob Tillaart
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// DATE: 2020-07-21
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// VERSION: 0.1.0
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// PURPOSE: Arduino library for Interval datatype
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// URL: https://github.com/RobTillaart/Interval
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//
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// 0.0.1 2020-07-20 initial version (not complete)
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// 0.1.0 2020-12-30 arduino-ci, unit tests, setRange()
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#include "Interval.h"
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Interval::Interval(float lo, float hi)
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{
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if (lo <= hi)
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{
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_lo = lo;
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_hi = hi;
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}
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else
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{
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_lo = hi;
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_hi = lo;
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}
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};
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Interval::Interval(float f)
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{
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_lo = f;
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_hi = f;
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};
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Interval::Interval()
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{
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_lo = 0;
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_hi = 0;
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};
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float Interval::relAccuracy()
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{
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if (value() == 0.0) return -1;
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return abs(range() / value()); // TODO /2 ?
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}
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void Interval::setRange(float r)
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{
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float f = value();
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_lo = f - r / 2;
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_hi = f + r / 2;
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}
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// PRINTABLE
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size_t Interval::printTo(Print& p) const
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{
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size_t n = 0;
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n += p.print('[');
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n += p.print(_lo, _decimals);
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n += p.print(", ");
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n += p.print(_hi, _decimals);
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n += p.print(']');
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return n;
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};
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/////////////////////////////////////////////////
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//
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// MATH BASIC OPERATIONS
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//
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Interval Interval::operator + (const Interval &in)
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{
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return Interval(_lo + in._lo, _hi + in._hi);
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}
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Interval Interval::operator - (const Interval &in)
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{
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return Interval(_lo - in._hi, _hi - in._lo);
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}
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Interval Interval::operator * (const Interval &in)
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{
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return Interval(_lo * in._lo, _hi * in._hi);
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}
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Interval Interval::operator / (const Interval &in)
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{
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return Interval(_lo / in._hi, _hi / in._lo);
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}
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Interval Interval::operator += (const Interval &in)
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{
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_lo += in._lo;
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_hi += in._hi;
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return *this;
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}
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Interval Interval::operator -= (const Interval &in)
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{
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_lo -= in._hi;
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_hi -= in._lo;
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return *this;
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}
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Interval Interval::operator *= (const Interval &in)
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{
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_lo *= in._lo;
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_hi *= in._hi;
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return *this;
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}
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Interval Interval::operator /= (const Interval &in)
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{
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_lo /= in._hi;
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_hi /= in._lo;
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return *this;
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}
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/////////////////////////////////////////////////
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//
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// COMPARISON OPERATIONS
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//
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bool Interval::operator == (const Interval &in)
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{
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return ((_lo == in._lo) && (_hi == in._hi));
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}
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bool Interval::operator != (const Interval &in)
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{
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return ((_lo != in._lo) || (_hi != in._hi));
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}
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// VALUE FOR NOW...
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// bool Interval::operator > (const Interval &in)
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// {
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// return this->value() > in.value();
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// }
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//
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// bool Interval::operator >= (const Interval &in)
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// {
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// return this->value() >= in.value();
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// }
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//
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// bool Interval::operator < (const Interval &in)
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// {
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// return this->value() < in.value();
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// }
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//
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// bool Interval::operator <= (const Interval &in)
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// {
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// return this->value() <= in.value();
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// }
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// -- END OF FILE --
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