pprz_stat.h File Reference

Statistics functions like variance. More...

#include "std.h"

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Functions
static float	variance_float (float *array, int nb)
	Compute the variance of an array of values (float). More...
static int32_t	variance_int (int32_t *array, int nb)
	Compute the variance of an array of values (integer). More...

Detailed Description

Statistics functions like variance.

Definition in file pprz_stat.h.

Function Documentation

static float variance_float ( float *  array, int  nb  )

inlinestatic

Compute the variance of an array of values (float).

The variance is a measure of how far a set of numbers is spread out V(X) = E[(X-E[X])^2] = E[X^2] - E[X]^2 where E[X] is the expected value of X

Parameters

array	pointer to an array of float
nb	numbre of values in the array, must be >0

Returns

variance

Definition at line 45 of file pprz_stat.h.

static int32_t variance_int ( int32_t *  array, int  nb  )

inlinestatic

Compute the variance of an array of values (integer).

The variance is a measure of how far a set of numbers is spread out V(X) = E[(X-E[X])^2] = E[X^2] - E[X]^2 where E[X] is the expected value of X

Parameters

array	pointer to an array of integer
nb	numbre of values in the array, must be >0

Returns

variance

Definition at line 66 of file pprz_stat.h.