mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-09-19 16:46:11 -04:00
114 lines
2.6 KiB
C++
114 lines
2.6 KiB
C++
#pragma once
|
|
//
|
|
// FILE: FLE.h
|
|
// AUTHOR: Rob Tillaart
|
|
// DATE: 2020-07-21
|
|
// VERSION: 0.1.2
|
|
// PURPOSE: Arduino library for float with error datatype
|
|
// URL: https://github.com/RobTillaart/FLE
|
|
//
|
|
// HISTORY:
|
|
// see FLE.cpp file
|
|
|
|
|
|
#include "Arduino.h"
|
|
#include "math.h"
|
|
|
|
#define FLE_LIB_VERSION (F("0.1.2"))
|
|
|
|
|
|
class FLE: public Printable
|
|
{
|
|
public:
|
|
// CONSTRUCTOR
|
|
FLE(float val = 0, float error = 0);
|
|
|
|
// PRINTABLE
|
|
size_t printTo(Print& p) const;
|
|
FLE setDecimals(uint8_t n) { _decimals = n; return *this; };
|
|
FLE setSeparator(char c) { _sep = c; return *this; };
|
|
|
|
// BASE FUNCTIONS
|
|
float value() const{ return _v; };
|
|
float error() const{ return _e; };
|
|
float relError() const{ return (_v == 0 ? 0 : abs(_e / _v)); };
|
|
float high() const{ return _v + _e; };
|
|
float low() const{ return _v - _e; };
|
|
|
|
// MATH OPERATORS
|
|
FLE operator - (); // negation c = -a;
|
|
|
|
FLE operator + (const FLE&);
|
|
FLE operator - (const FLE&); // minus c = a - b;
|
|
FLE operator * (const FLE&);
|
|
FLE operator / (const FLE&);
|
|
FLE operator += (const FLE&);
|
|
FLE operator -= (const FLE&);
|
|
FLE operator *= (const FLE&);
|
|
FLE operator /= (const FLE&);
|
|
|
|
|
|
// BOOL OPERATORS
|
|
// for all value pairs of a and b
|
|
bool operator == (const FLE&);
|
|
bool operator != (const FLE&);
|
|
bool operator > (const FLE&);
|
|
bool operator < (const FLE&);
|
|
|
|
|
|
// MISC OPERATORS
|
|
// FLE lies completely in range a
|
|
// meaning FLE is more precise than a => smaller error.
|
|
bool in(FLE a);
|
|
|
|
|
|
|
|
// EXPERIMENTAL - INVESTIGATE
|
|
//
|
|
|
|
// weak propositions.
|
|
bool peq (const FLE&); // possible equal
|
|
bool pne (const FLE&); // possible not equal
|
|
|
|
// SET LIKE MATH
|
|
FLE shared(FLE b); // overlap.
|
|
|
|
|
|
|
|
// semantic meaning not 100% clear
|
|
// bool operator >= (const FLE&);
|
|
// bool operator <= (const FLE&);
|
|
|
|
|
|
// bool plt (const FLE&); // possible less than
|
|
// bool ple (const FLE&); // possible less equal
|
|
// bool pgt (const FLE&); // possible greater than
|
|
// bool pge (const FLE&); // possible greater equal
|
|
|
|
|
|
|
|
// SET LIKE MATH
|
|
// FLE shared(FLE a, FLE b); // overlap.
|
|
// FLE lower(FLE a, FLE b); // part of a lower than b;
|
|
// FLE higher(FLE a, FLE b); // part of a higher than b;
|
|
|
|
// float both%(FLE a, FLE b); // overlap percentage
|
|
// float sub%(FLE a, FLE b); // part of a lower than b;
|
|
// float sup%(FLE a, FLE b); // part of a higher than b;
|
|
|
|
//
|
|
//
|
|
// infinite ?
|
|
// NAN ?
|
|
|
|
|
|
private:
|
|
float _v;
|
|
float _e;
|
|
uint8_t _decimals = 2;
|
|
char _sep = '~'; // _sep = '±'; // gives warning.
|
|
};
|
|
|
|
|
|
// -- END OF FILE --
|