Java Number Swap swap(final int value)

Description

Performs a byte-order swap for a 32-bit signed integer.

License

Apache License

Parameter

Parameter	Description
value	The value to swap.

Return

The swapped value.

Declaration

public static int swap(final int value) 

Method Source Code

//package com.java2s;
/*/*from www. j  a  v a2s .  c  o m*/
 * #%L
 * EndianUtils.java - mongodb-async-driver - Allanbank Consulting, Inc.
 * %%
 * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc.
 * %%
 * 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.
 * #L%
 */

public class Main {
    /**
     * Performs a byte-order swap for a 32-bit signed integer.
     *
     * @param value
     *            The value to swap.
     * @return The swapped value.
     */
    public static int swap(final int value) {
        return (((value << 24) & 0xFF000000) | ((value << 8) & 0x00FF0000) | ((value >> 8) & 0x0000FF00)
                | ((value >> 24) & 0x000000FF));
    }

    /**
     * Performs a byte-order swap for a 64-bit signed integer.
     *
     * @param value
     *            The value to swap.
     * @return The swapped value.
     */
    public static long swap(final long value) {
        return (((value << 56) & 0xFF00000000000000L) | ((value << 40) & 0x00FF000000000000L)
                | ((value << 24) & 0x0000FF0000000000L) | ((value << 8) & 0x000000FF00000000L)
                | ((value >> 8) & 0x00000000FF000000L) | ((value >> 24) & 0x0000000000FF0000L)
                | ((value >> 40) & 0x000000000000FF00L) | ((value >> 56) & 0x00000000000000FFL));
    }
}

Related

1. swap(int elementWidth, long value)
2. swap(Integer i, Integer j)
3. swap(short myShort)
4. swap(short value)