/*  Scicos
*
*  Copyright (C) INRIA - METALAU Project <scicos@inria.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* See the file ./license.txt
*/
/*--------------------------------------------------------------------------*/
#include <math.h>
#include "scicos_block4.h"
#include "dynlib_scicos_blocks.h"
/*--------------------------------------------------------------------------*/
SCICOS_BLOCKS_IMPEXP void summation(scicos_block *block, int flag)
{
    int j = 0, k = 0;

    double *y = GetRealOutPortPtrs(block, 1);
    int nu = GetInPortRows(block, 1);
    int mu = GetInPortCols(block, 1);
    int *ipar = GetIparPtrs(block);

    if (flag == 1)
    {
        if (GetNin(block) == 1)
        {
            double *u = GetRealInPortPtrs(block, 1);
            y[0] = 0.0;

            for (j = 0; j < nu * mu; j++)
            {
                y[0] = y[0] + u[j];
            }
        }
        else
        {
            for (j = 0; j < nu * mu; j++)
            {
                y[j] = 0.0;
                for (k = 0; k < GetNin(block); k++)
                {
                    double *u = GetRealInPortPtrs(block, k + 1);
                    if (ipar[k] > 0)
                    {
                        y[j] = y[j] + u[j];
                    }
                    else
                    {
                        y[j] = y[j] - u[j];
                    }
                }
            }
        }
    }
}
/*--------------------------------------------------------------------------*/