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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/* 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 "MALLOC.h"
#include "scicos_block.h"
#include "dynlib_scicos_blocks.h"
#include "scicos_free.h"
#include "scicos_malloc.h"
/*--------------------------------------------------------------------------*/
SCICOS_BLOCKS_IMPEXP void ratelimiter(scicos_block *block, int flag)
{
/* rpar[0]=rising rate limit, rpar[1]=falling rate limit */
double* pw = NULL;
double rate = 0. , t = 0.;
double** work = (double**) block->work;
if (flag == 4)
{
/* the workspace is used to store previous values */
if ((*work = (double*) scicos_malloc(sizeof(double) * 4)) == NULL )
{
set_block_error(-16);
return;
}
pw = *work;
pw[0] = 0.0;
pw[1] = 0.0;
pw[2] = 0.0;
pw[3] = 0.0;
}
else if (flag == 5)
{
scicos_free(*work);
}
else if (flag == 1)
{
if (get_phase_simulation() == 1)
{
do_cold_restart();
}
pw = *work;
t = get_scicos_time();
if (t > pw[2])
{
pw[0] = pw[2];
pw[1] = pw[3];
rate = (block->inptr[0][0] - pw[1]) / (t - pw[0]);
}
else if (t <= pw[2])
{
if (t > pw[0])
{
rate = (block->inptr[0][0] - pw[1]) / (t - pw[0]);
}
else
{
rate = 0.0;
}
}
if (rate > block->rpar[0])
{
block->outptr[0][0] = (t - pw[0]) * block->rpar[0] + pw[1];
}
else if (rate < block->rpar[1])
{
block->outptr[0][0] = (t - pw[0]) * block->rpar[1] + pw[1];
}
else
{
block->outptr[0][0] = block->inptr[0][0];
}
pw[2] = t;
pw[3] = block->outptr[0][0];
}
}
/*--------------------------------------------------------------------------*/
|
