Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
EndianUtils |
|
| 1.0;1 |
1 | /* | |
2 | * #%L | |
3 | * EndianUtils.java - mongodb-async-driver - Allanbank Consulting, Inc. | |
4 | * %% | |
5 | * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc. | |
6 | * %% | |
7 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
8 | * you may not use this file except in compliance with the License. | |
9 | * You may obtain a copy of the License at | |
10 | * | |
11 | * http://www.apache.org/licenses/LICENSE-2.0 | |
12 | * | |
13 | * Unless required by applicable law or agreed to in writing, software | |
14 | * distributed under the License is distributed on an "AS IS" BASIS, | |
15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
16 | * See the License for the specific language governing permissions and | |
17 | * limitations under the License. | |
18 | * #L% | |
19 | */ | |
20 | package com.allanbank.mongodb.bson.io; | |
21 | ||
22 | /** | |
23 | * Utilities to deal with integer endian differences. | |
24 | * | |
25 | * @api.no This class is <b>NOT</b> part of the drivers API. This class may be | |
26 | * mutated in incompatible ways between any two releases of the driver. | |
27 | * @copyright 2011-2013, Allanbank Consulting, Inc., All Rights Reserved | |
28 | */ | |
29 | 0 | public final class EndianUtils { |
30 | /** | |
31 | * Performs a byte-order swap for a 32-bit signed integer. | |
32 | * | |
33 | * @param value | |
34 | * The value to swap. | |
35 | * @return The swapped value. | |
36 | */ | |
37 | public static int swap(final int value) { | |
38 | 577 | return (((value << 24) & 0xFF000000) | ((value << 8) & 0x00FF0000) |
39 | | ((value >> 8) & 0x0000FF00) | ((value >> 24) & 0x000000FF)); | |
40 | } | |
41 | ||
42 | /** | |
43 | * Performs a byte-order swap for a 64-bit signed integer. | |
44 | * | |
45 | * @param value | |
46 | * The value to swap. | |
47 | * @return The swapped value. | |
48 | */ | |
49 | public static long swap(final long value) { | |
50 | 340 | return (((value << 56) & 0xFF00000000000000L) |
51 | | ((value << 40) & 0x00FF000000000000L) | |
52 | | ((value << 24) & 0x0000FF0000000000L) | |
53 | | ((value << 8) & 0x000000FF00000000L) | |
54 | | ((value >> 8) & 0x00000000FF000000L) | |
55 | | ((value >> 24) & 0x0000000000FF0000L) | |
56 | | ((value >> 40) & 0x000000000000FF00L) | ((value >> 56) & 0x00000000000000FFL)); | |
57 | } | |
58 | ||
59 | } |