1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/* gen-trig-test.c
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <benjamin@chausse.xyz> wrote this file. As long as you retain this notice
* you can do whatever you want with this stuff. If we meet some day, and you
* think this stuff is worth it, you can buy me a beer in return.
* Benjamin Chausse
* ----------------------------------------------------------------------------
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
/* This code was used to generate floating numbers found in testData.h
* It's purpose is to generate a list of expected outputs for the sine
* and cosine function with a given number. It uses the math.h library
* which cannot be used for the assignment and which is therefore a great
* subject to test and compare with.
*
* The generated [][3]int list is organized as follows:
* { original_value, expected_sine, expected_cosine }
*
* Values chosen here test the following edge cases,
* - Common trigonometric circle identities (0°,30°,45°,60°,90°, etc...)
* - Negative values
* - Values surpassing 2π
*/
int main(){
// list of number {{{
float lst[20] = {
0, // 0°
M_PI/6, // 30°
M_PI/4, // 45°
M_PI/3, // 60°
M_PI/2, // 90°
2*M_PI/3, // 120°
3*M_PI/4, // 135°
5*M_PI/6, // 150°
M_PI, // 180°
7*M_PI/6, // 210°
5*M_PI/4, // 225°
4*M_PI/3, // 240°
3*M_PI/2, // 270°
5*M_PI/3, // 300°
7*M_PI/4, // 315°
11*M_PI/6, // 330°
5*M_PI/2, // 450° (over 2π -> sin=1)
3*M_PI, // 540° (over 2π -> cos=1)
-5*M_PI/2, // -90 negative value -> sin=-1°
-3*M_PI, // -180 negative value -> cos=-1°
};
// }}}
printf("int piValues[][] = {\n");
int max = (sizeof(lst)/sizeof(lst[0]))-1;
printf("%d",max);
for (int i=0; i<max; i++) {
printf(" {%f, %f, %f},\n",
lst[i],
sin(lst[i]),
cos(lst[i]));
};
printf(" {%f, %f, %f}\n}",
lst[max],
sin(lst[max]),
cos(lst[max]));
return 0
}
|
