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53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
#ifndef Statistic_h
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#define Statistic_h
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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: 0.3.4
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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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// Released to the public domain
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//
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// the standard deviation increases the lib (<100 bytes)
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// it can be in/excluded by un/commenting next line (compile time)
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#define STAT_USE_STDEV 1
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#include <math.h>
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#define STATISTIC_LIB_VERSION "0.3.4"
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class Statistic
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{
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public:
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Statistic(); // "switches on/off" stdev run time
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void clear(); // "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 empty
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float sum() const { return _sum; }; // zero if empty
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float minimum() const { return _min; }; // zero if empty
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float maximum() const { return _max; }; // zero if empty
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float average() const; // NAN if empty
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#ifdef STAT_USE_STDEV
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float variance() const; // NAN if empty
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float pop_stdev() const; // population stdev // NAN if empty
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float unbiased_stdev() const; // NAN if empty
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#endif
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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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#ifdef STAT_USE_STDEV
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float _ssqdif; // sum of squares difference
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#endif
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};
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#endif
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// END OF FILE
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