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/* 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_block.h"
#include "scicos_print.h"
#include "localization.h"
#include "dynlib_scicos_blocks.h"
/*--------------------------------------------------------------------------*/
SCICOS_BLOCKS_IMPEXP void edgetrig(scicos_block *block, int flag)
{
double z = block->z[0], u = block->inptr[0][0];
if (flag == 2 || flag == 6)
{
block->z[0] = u;
}
else if (flag == 1)
{
if (block->ipar[0] != 0)
{
z = z * block->ipar[0];
u = u * block->ipar[0];
if (((z <= 0) & (u > 0)) || ((z < 0) & (u >= 0)))
{
block->outptr[0][0] = 1.;
}
else
{
block->outptr[0][0] = 0.;
}
}
else /* rising and falling edge */
{
if (((z <= 0) & (u > 0)) || ((z < 0) & (u >= 0)) || ((z > 0) & (u <= 0)) || ((z >= 0) & (u < 0)))
{
block->outptr[0][0] = 1.;
}
else
{
block->outptr[0][0] = 0.;
}
}
}
else if (flag == 4)
{
if (block->ng > 0)
{
set_block_error(-1);
scicos_print(_("Trigger block must have discrete time input."));
return;
}
}
}
/*--------------------------------------------------------------------------*/
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