~jonathank89/burg/burg-percise

/* Generate trigonometric function tables. */

/*

 *  GRUB  --  GRand Unified Bootloader

 *  Copyright (C) 2008, 2009  Free Software Foundation, Inc.

 *

 *  GRUB 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 3 of the License, or

 *  (at your option) any later version.

 *

 *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.

 */

#define _GNU_SOURCE 1

#include <grub/trig.h>

#include <math.h>

#include <stdio.h>

int

main ()

{

  int i;

  printf ("#include <grub/types.h>\n"

	  "#include <grub/symbol.h>\n"

	  "GRUB_EXPORT(grub_trig_costab);\n"

	  "GRUB_EXPORT(grub_trig_sintab);\n");

#define TAB(op) \

  printf ("grub_int16_t grub_trig_" #op "tab[] =\n{"); \

  for (i = 0; i < GRUB_TRIG_ANGLE_MAX; i++) \

    { \

      double x = i * 2 * M_PI / GRUB_TRIG_ANGLE_MAX; \

      if (i % 10 == 0) \

	printf ("\n    "); \

      printf ("%d,", (int) (round (op (x) * GRUB_TRIG_FRACTION_SCALE))); \

    } \

  printf ("\n};\n")

  TAB(sin);

  TAB(cos);

  return 0;

}