blob: b430af9ff3f5631f8c2aac438cb3f9fa78b1b9cb (
plain)
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
|
package dslog;
import java.io.InputStream;
class Util {
public static int[] concat(int[]... lists) {
int len = 0;
for (int[] list : lists) {
len += list.length;
}
int[] ret = new int[len];
int n = 0;
for (int[] list : lists) {
System.arraycopy(list, 0, ret, n, list.length);
n += list.length;
}
return ret;
}
public static int[] reverse(int[] list) {
int mid = list.length / 2;
int tmp;
for (int i = 0; i < mid; i++) {
tmp = list[i];
list[i] = list[list.length - i - 1];
list[list.length - i - 1] = tmp;
}
return list;
}
public static double unpack(short val, int whole, int frac) {
switch (whole + frac) {
case 8:
case 10:
break;
default:
throw new IllegalArgumentException(whole+"+"+frac+" != 8|10");
}
return val / Math.pow(2, frac);
}
public static double unpack(int val, int whole, int frac) {
switch (whole + frac) {
case 16:
break;
default:
throw new IllegalArgumentException(whole+"+"+frac+" != 16");
}
return val / Math.pow(2, frac);
}
}
|
