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
|
/*****************************************************************************/
/*
* gentbl.c -- Linux soundcard HF FSK driver,
* Table generator.
*
* Copyright (C) 1997 Thomas Sailer (sailer@ife.ee.ethz.ch)
* Swiss Federal Institute of Technology (ETH), Electronics Lab
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
*/
/*****************************************************************************/
#include <linux/hfmodem.h>
#include <math.h>
#include <stdio.h>
/* --------------------------------------------------------------------- */
#define SINTABBITS 9
#define SINTABSIZE (1<<SINTABBITS)
/* --------------------------------------------------------------------- */
static void gensintbl(void)
{
int i;
printf("#define SINTABBITS %d\n#define SINTABSIZE (1<<SINTABBITS)\n"
"\nstatic short isintab[SINTABSIZE+SINTABSIZE/4] = {\n\t", SINTABBITS);
for (i = 0; i < (SINTABSIZE+SINTABSIZE/4); i++) {
printf("%6d", (int)(32767.0 * sin(2.0 * M_PI / SINTABSIZE * i)));
if (i < (SINTABSIZE+SINTABSIZE/4)-1) {
if ((i & 7) == 7)
printf(",\n\t");
else
printf(",");
}
}
printf("\n};\n\n");
}
/* --------------------------------------------------------------------- */
int main(int argc, char *argv[])
{
printf("/*\n * This file is automatically generated by %s, DO NOT EDIT!\n*/\n\n",
argv[0]);
gensintbl();
exit(0);
}
/* --------------------------------------------------------------------- */
|
