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d2be7481 RM |
1 | /* Generate trigonometric function tables. */ |
2 | /* | |
3 | * GRUB -- GRand Unified Bootloader | |
4 | * Copyright (C) 2008, 2009 Free Software Foundation, Inc. | |
5 | * | |
6 | * GRUB is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * GRUB is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GRUB. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #define _GNU_SOURCE 1 | |
21 | ||
22 | #include <grub/trig.h> | |
23 | #include <math.h> | |
24 | #include <stdio.h> | |
25 | ||
26 | int | |
27 | main () | |
28 | { | |
29 | int i; | |
30 | ||
31 | printf ("#include <grub/types.h>\n"); | |
32 | ||
33 | #define TAB(op) \ | |
34 | printf ("grub_int16_t grub_trig_" #op "tab[] =\n{"); \ | |
35 | for (i = 0; i < GRUB_TRIG_ANGLE_MAX; i++) \ | |
36 | { \ | |
37 | double x = i * 2 * M_PI / GRUB_TRIG_ANGLE_MAX; \ | |
38 | if (i % 10 == 0) \ | |
39 | printf ("\n "); \ | |
40 | printf ("%d,", (int) (round (op (x) * GRUB_TRIG_FRACTION_SCALE))); \ | |
41 | } \ | |
42 | printf ("\n};\n") | |
43 | ||
44 | TAB(sin); | |
45 | TAB(cos); | |
46 | ||
8f41eb55 | 47 | return 0; |
d2be7481 | 48 | } |