/*
fixedpoint (c) 2006 Kris Beevers
This file is part of fixedpoint.
fixedpoint 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.
fixedpoint 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 fixedpoint; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
$Id: gen_tables.c,v 1.1.1.1 2006/10/18 22:30:17 beevek Exp $
*/
// this program generates sin/cos tables using the fixed point
// definitions from fixedpoint.h. you should make sure to re-generate
// the tables if you change the size of the decimal part in any way;
// put the tables in fixedpoint.c
#include <stdio.h>
#include <math.h>
#include "fixedpoint.h"
int main()
{
uint32_t count;
fixed_t a;
printf("#define TRIG_TABLE_SIZE %d // put this at top of fixedpoint.c\n", fp_pi/(1<<fp_trig_shift));
printf("static fixed_t sin_table[] = {\n ");
for(count = 1, a = 0; a < fp_pi+1; a += 1<<fp_trig_shift, ++count) {
double s = sin(fp2float(a));
fixed_t sfp = float2fp(s);
if(!(count % 16))
printf("%d,\n ", sfp);
else
printf("%d, ", sfp);
}
printf("\n};\n\n");
printf("static fixed_t cos_table[] = {\n ");
for(count = 1, a = 0; a < fp_pi+1; a += 1<<fp_trig_shift, ++count) {
double c = cos(fp2float(a));
fixed_t cfp = float2fp(c);
if(!(count % 16))
printf("%d,\n ", cfp);
else
printf("%d, ", cfp);
}
printf("\n};\n\n");
printf("static fixed_t tan_table[] = {\n ");
for(count = 1, a = 0; a < fp_pi+1; a += 1<<fp_trig_shift, ++count) {
double t = tan(fp2float(a));
fixed_t tfp = float2fp(t);
if(!(count % 16))
printf("%d,\n ", tfp);
else
printf("%d, ", tfp);
}
printf("\n};\n\n");
return 0;
}
