/*
 *  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 "stdevf.h"
#include "meanf.h"
#include "abs.h"

void zcolumnstdevfa(doubleComplex *in1, int lines, int columns, doubleComplex*in2, doubleComplex* out){
  int i = 0;
  int j = 0;
  doubleComplex temp = DoubleComplex(0.0,0.0);
  doubleComplex accumulate = DoubleComplex(0.0,0.0);
  doubleComplex accumulateFre = DoubleComplex(0.0,0.0);
    
  zcolumnmeanfa(in1, lines, columns, in2, out );


  /*we first multiply each zell of the input matrix by its zoefficient*/
  for (j = 0; j < lines; ++j)
    {
      accumulate = DoubleComplex(0.0,0.0);
      accumulateFre = DoubleComplex(0.0,0.0);
      temp = DoubleComplex(0.0,0.0);

      for ( i = 0 ; i < columns; ++i )
        {

         temp = zpows (  zdiffs (in1[lines*i + j] ,out[j] ) ,DoubleComplex (2.0, 0.0 ) );
         temp = zmuls( in2[lines*i + j] , temp);

         accumulate = zadds( temp , accumulate);
         accumulateFre = zadds(in2[lines*i + j] ,accumulateFre );

        } 

      if (lines <= 1)
        {
          out[j] = zmuls (DoubleComplex(0.0,0.0) , accumulate ) ; 
        }
      else
        {
	  if( dabss (zreals(accumulate)) <= 3e-14 ) accumulate = DoubleComplex(dabss(zreals(accumulate)) ,zimags(accumulate));
	  if( dabss (zimags(accumulate)) <= 3e-14 ) accumulate = DoubleComplex(zreals(accumulate) ,dabss(zimags(accumulate)));
       accumulate = zrdivs(accumulate, zdiffs(accumulateFre ,DoubleComplex(1.0,0.0)));
        out[j] = zsqrts(accumulate);
        }
    }

}