blob: e4f105ab1ac18f19d4e066b023370730967f1884 (
plain) (
blame)
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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
#include <inttypes.h>
#include <libfixmath/fixmath.h>
#include "hiclock.h"
//#define fix_func fix16_exp
//#define fix_func_str "fix16_exp"
//#define flt_func expf
//#define flt_func_str "expf"
//#define fix_func fix16_atan
//#define fix_func_str "fix16_atan"
//#define flt_func atanf
//#define flt_func_str "atanf"
#define fix_func fix16_sin
#define fix_func_str "fix16_sin"
#define flt_func sinf
#define flt_func_str "sinf"
//#define fix_func fix16_sqrt
//#define fix_func_str "fix16_sqrt"
//#define flt_func sqrtf
//#define flt_func_str "sqrtf"
int main(int argc, char** argv) {
printf("libfixmath test tool\n");
hiclock_init();
uintptr_t args = (1 << 8);
uintptr_t iter = (1 << 8);
uintptr_t pass = (1 << 8);
uintptr_t i;
srand(time(NULL));
hiclock_t fix_duration = 0;
hiclock_t flt_duration = 0;
fix16_t fix_error = 0;
uintptr_t k;
for(k = 0; k < pass; k++) {
fix16_t fix_args[args];
for(i = 0; i < args; i++)
fix_args[i] = (rand() ^ (rand() << 16));
fix16_t fix_result[args];
hiclock_t fix_start = hiclock();
for(i = 0; i < iter; i++) {
uintptr_t j;
for(j = 0; j < args; j++)
fix_result[j] = fix_func(fix_args[j]);
}
hiclock_t fix_end = hiclock();
float flt_args[args];
for(i = 0; i < args; i++)
flt_args[i] = fix16_to_float(fix_args[i]);
float flt_result[args];
hiclock_t flt_start = hiclock();
for(i = 0; i < iter; i++) {
uintptr_t j;
for(j = 0; j < args; j++)
flt_result[j] = flt_func(flt_args[j]);
}
hiclock_t flt_end = hiclock();
for(i = 0; i < args; i++)
fix_error += abs(fix16_from_float(flt_result[i]) - fix_result[i]);
flt_duration += (flt_end - flt_start);
fix_duration += (fix_end - fix_start);
}
printf("%16s: %08"PRIuHICLOCK" @ %"PRIu32"Hz\n", flt_func_str, flt_duration, HICLOCKS_PER_SEC);
printf("%16s: %08"PRIuHICLOCK" @ %"PRIu32"Hz\n", fix_func_str, fix_duration, HICLOCKS_PER_SEC);
printf(" Difference: %08"PRIiHICLOCK" (% 3.2f%%)\n", (flt_duration - fix_duration), ((fix_duration * 100.0) / flt_duration));
printf(" Error: %f%%\n", ((fix16_to_dbl(fix_error) * 100.0) / (args * pass)));
return EXIT_SUCCESS;
}
|
