48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/* Generate trigonometric function tables. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2008, 2009 Free Software Foundation, Inc.
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*
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* GRUB 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 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define _GNU_SOURCE 1
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#include <grub/trig.h>
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#include <math.h>
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#include <stdio.h>
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int
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main ()
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{
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int i;
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printf ("#include <grub/types.h>\n");
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#define TAB(op) \
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printf ("grub_int16_t grub_trig_" #op "tab[] =\n{"); \
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for (i = 0; i < GRUB_TRIG_ANGLE_MAX; i++) \
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{ \
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double x = i * 2 * M_PI / GRUB_TRIG_ANGLE_MAX; \
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if (i % 10 == 0) \
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printf ("\n "); \
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printf ("%d,", (int) (round (op (x) * GRUB_TRIG_FRACTION_SCALE))); \
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} \
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printf ("\n};\n")
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TAB(sin);
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TAB(cos);
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return 0;
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}
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