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
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
float reverse_float (float x)
{
float y;
char *src = (char *) &x;
char *targ = (char *) &y;
/* swap the bytes */
targ[0] = src[3];
targ[1] = src[2];
targ[2] = src[1];
targ[3] = src[0];
return y;
}
int main (int argc, char **argv)
{
const char *binfile = "fedstl.bin";
const char *datfile = "fedstl.dat";
char datpath[512];
int swap_ends = 0;
FILE *fdat, *fbin;
double xx;
float x;
if (argc == 2 && !strcmp(argv[1], "--swap-ends")) {
swap_ends = 1;
argc--;
} else if (argc == 3 && !strcmp(argv[2], "--swap-ends")) {
swap_ends = 1;
argc--;
}
if (swap_ends) {
puts("*** making data file with swapped endianness");
}
if (argc > 1) {
sprintf(datpath, "%s/%s", argv[1], datfile);
} else {
strcpy(datpath, datfile);
}
fdat = fopen(datpath, "r");
if (fdat == NULL) {
fprintf(stderr, "Couldn't open %s\n", datfile);
exit(EXIT_FAILURE);
}
fbin = fopen(binfile, "wb");
if (fbin == NULL) {
fprintf(stderr, "Couldn't open %s\n", binfile);
exit(EXIT_FAILURE);
}
while (fscanf(fdat, "%lf", &xx) == 1) {
x = xx;
if (swap_ends) {
reverse_float(x);
}
fwrite(&x, sizeof x, 1, fbin);
}
fclose(fbin);
fclose(fdat);
return 0;
}
|
