mirror of
https://github.com/paparazzi/paparazzi.git
synced 2026-05-09 22:49:53 +08:00
Felix Ruess
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/*
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* mkcostab.c -- cosine table generator
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*
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* Copyright (C) 1996
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* Thomas Sailer (sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* ---------------------------------------------------------------------- */
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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/* ---------------------------------------------------------------------- */
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#define COSTABSIZE 0x400
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/* ---------------------------------------------------------------------- */
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int main(int argc, char *argv[])
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{
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int i;
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FILE *fi, *ff;
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float f;
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if (!(fi = fopen("costabi.c", "w")))
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exit(1);
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if (!(ff = fopen("costabf.c", "w")))
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exit(1);
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fprintf(fi, "/*\n * This file is machine generated, DO NOT EDIT!\n */\n\n"
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"int costabi[%i] = {", COSTABSIZE);
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fprintf(ff, "/*\n * This file is machine generated, DO NOT EDIT!\n */\n\n"
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"float costabf[%i] = {", COSTABSIZE);
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for (i = 0; i < COSTABSIZE; i++) {
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if ((i & 3) == 0)
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fprintf(ff, "\n\t");
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if ((i & 7) == 0)
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fprintf(fi, "\n\t");
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f = cos(M_PI*2.0*i/COSTABSIZE);
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fprintf(ff, "%12.9f", f);
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fprintf(fi, "%6i", (int)(32767.0*f));
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if (i < COSTABSIZE-1) {
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fprintf(ff, ", ");
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fprintf(fi, ", ");
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}
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}
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fprintf(ff, "\n};\n");
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fprintf(fi, "\n};\n");
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exit(0);
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}
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