/*
 *  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"
#include "division.h"

floatComplex cvariancefa(floatComplex *in1, int size, floatComplex *in2)

{
  int i = 0 ;
  floatComplex temp = FloatComplex (0.0f, 0.0f );
  floatComplex accumulate =FloatComplex (0.0f, 0.0f );
  floatComplex accumulateFre = FloatComplex (0.0f, 0.0f );

  floatComplex meanf = cmeanfa (in1 , size , in2);

  for(i = 0 ; i < size ; ++i)
    {
     temp = cpows (  cdiffs (in1[i] , meanf ) ,FloatComplex (2.0f, 0.0f ) );
     temp = cmuls( in2[i] , temp);

     accumulate = cadds( temp , accumulate);
     accumulateFre =  cadds (in2[i] ,accumulateFre );
    }
  return crdivs (accumulate , cdiffs (accumulateFre ,FloatComplex(1.0f,0.0f))   ); 
}