Java Zigzag Encode zigZagEncode(long l)

Description

<a href="https://developers.google.com/protocol-buffers/docs/encoding#types">Zig-zag</a> encode the provided long.

License

Apache License

Declaration

public static long zigZagEncode(long l) 

Method Source Code

//package com.java2s;
/*//from ww  w . j  a  v  a2 s .c  o  m
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

public class Main {
    /** Same as {@link #zigZagEncode(long)} but on integers. */
    public static int zigZagEncode(int i) {
        return (i >> 31) ^ (i << 1);
    }

    /**
     * <a href="https://developers.google.com/protocol-buffers/docs/encoding#types">Zig-zag</a>
     * encode the provided long. Assuming the input is a signed long whose
     * absolute value can be stored on <tt>n</tt> bits, the returned value will
     * be an unsigned long that can be stored on <tt>n+1</tt> bits.
     */
    public static long zigZagEncode(long l) {
        return (l >> 63) ^ (l << 1);
    }
}

Related

1. zigzagEncode(byte[] data)
2. zigZagEncode(int i)
3. zigzagEncode(int input)
4. zigzagEncode(int input)
5. zigZagEncode(long n)
6. zigzagEncode(long val)
7. zigZagSort(int[] array)
8. zigzagToInt(final int n)