47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
#pragma once
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//
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// FILE: Statistic.h
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// AUTHOR: Rob dot Tillaart at gmail dot com
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// modified at 0.3 by Gil Ross at physics dot org
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// VERSION: 0.4.2
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// PURPOSE: Recursive Statistical library for Arduino
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// HISTORY: See Statistic.cpp
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//
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#include <Arduino.h>
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#include <math.h>
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#define STATISTIC_LIB_VERSION (F("0.4.2"))
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class Statistic
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{
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public:
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Statistic(bool useStdDev = true); // "switches on/off" stdev run time
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void clear(bool useStdDev = true); // "switches on/off" stdev run time
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void add(const float);
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// returns the number of values added
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uint32_t count() const { return _cnt; }; // zero if count == zero
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float sum() const { return _sum; }; // zero if count == zero
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float minimum() const { return _min; }; // zero if count == zero
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float maximum() const { return _max; }; // zero if count == zero
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float average() const; // NAN if count == zero
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// useStdDev must be true to use next three
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float variance() const; // NAN if count == zero
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float pop_stdev() const; // population stdev // NAN if count == zero
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float unbiased_stdev() const; // NAN if count == zero
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protected:
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uint32_t _cnt;
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float _sum;
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float _min;
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float _max;
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bool _useStdDev;
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float _ssqdif; // sum of squares difference
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};
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// -- END OF FILE --
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