blob: 6e03e6d2a692e57849e1309665c05bb00bc24f9f (
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
|
/*
* Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar.helper;
/**
* Useful functions to work with bits
*/
public class BitUtil {
public static boolean check(long number, int index) {
return (number & (1 << index)) != 0;
}
public static int range(int number, int index, int length) {
return (number >> index) & ((1 << length) - 1);
}
public static long range(long number, int index, int length) {
return (number >> index) & ((1l << length) - 1);
}
}
|
