Java Unsigned Number Create unsignedIntValue(byte[] data, int offset)

Description

unsigned Int Value

License

Apache License

Declaration

public static long unsignedIntValue(byte[] data, int offset) 

Method Source Code

//package com.java2s;
/**/*from   w  ww .j a  v  a2 s  .  c  o  m*/
 * Copyright 2008 - 2009
 * 
 * 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.
 * 
 * @project loonframework
 * @author chenpeng
 * @email?ceponline@yahoo.com.cn
 * @version 0.1
 */

public class Main {
    public static long unsignedIntValue(byte[] data, int offset) {
        long result = 0;
        int multiply = 1;
        int value = 0;

        for (int i = 0; i < 4; i++) {
            value = data[i + offset];
            if (value < 0)
                value = value + 256;
            result = result + (value * multiply);
            multiply = multiply * 256;
        }

        return result;
    }
}

Related

1. unsignedIntToLong(int value)
2. unsignedIntToLong(Integer i)
3. unsignedIntToSignedByte(final int i)
4. unsignedIntToString(int x)
5. unsignedIntToString(int x, int radix)
6. unsignedLeb128Size(int value)
7. unsignedLessThan(long a, long b)
8. unsignedLocalIntersect2by2(final short[] set1, final int length1, final short[] set2, final int length2, final short[] buffer)
9. unsignedLocalIntersect2by2Cardinality(final short[] set1, final int length1, final short[] set2, final int length2)