blob: f49d2b38370f494b432339f9ad81b27b2aa1fdf1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2008-2008 - INRIA - Allan SIMON
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
*/
#include "variancef.h"
/*
s_moyennepond = meanf(x, fre)
s_ecartmoyenne = x - s_moyennepond
s_ecartcarre = s_ecartmoyenne.^2
s_ecartcarrepondere = s_ecartcarre .* fre
s = sum( s_ecartcarrepondere )/(sumfre - 1),
*/
float svariancefa(float *in1, int size, float* in2)
{
int i = 0 ;
float temp = 0.0f;
float accumulate = 0.0f ;
float accumulateFre = 0.0f ;
float meanf = smeanfa (in1 , size , in2);
/*printf ("\nmeanf %lf \n" ,meanf);*/
for(i = 0 ; i < size ; ++i)
{
temp = spows ( (in1[i] - meanf ) ,2 );
temp *= in2[i];
accumulate += temp ;
accumulateFre += in2[i];
}
return accumulate / (accumulateFre - 1) ;
}
|
