diff options
Diffstat (limited to 'drivers/char/hfmodem/gentbl.c')
| -rw-r--r-- | drivers/char/hfmodem/gentbl.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/char/hfmodem/gentbl.c b/drivers/char/hfmodem/gentbl.c new file mode 100644 index 000000000..558b9a405 --- /dev/null +++ b/drivers/char/hfmodem/gentbl.c @@ -0,0 +1,69 @@ +/*****************************************************************************/ + +/* + * 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); +} + +/* --------------------------------------------------------------------- */ + |