Java Long to Byte Array longToBytes(long v)

Description

Javascript doesn't support long data type, so it has to be converted to double before converting it to byte[].

License

Open Source License

Declaration

public static byte[] longToBytes(long v) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2013 Oak Ridge National Laboratory.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 ******************************************************************************/

public class Main {
    /**/*from   w  w w .  java 2 s.  c  o  m*/
     * Javascript doesn't support long data type, so it has to be converted to double before
     * converting it to byte[].
     */
    public static byte[] longToBytes(long v) {
        return doubleToBytes((double) v);
    }

    public static byte[] doubleToBytes(double d) {
        long l = Double.doubleToRawLongBits(d);
        byte[] r = new byte[8];
        for (int i = 0; i < 8; i++) {
            r[i] = (byte) ((l >>> (i * 8)) & 0xFF);
        }
        return r;
    }
}

Related

1. longToBytes(long n, byte b[], int offset)
2. longToBytes(long num)
3. longToBytes(long num, byte[] data, int index)
4. longToBytes(long number)
5. longToBytes(long v)
6. longToBytes(long v, byte[] b)
7. longToBytes(long v, byte[] bytes)
8. longToBytes(long v, final byte[] arr)
9. longToBytes(long val)