Here you can find the source of toUnsignedLong(int x)
public static final long toUnsignedLong(int x)
//package com.java2s; /*/*w ww . j a v a2 s .co m*/ * Licensed to GraphHopper and Peter Karich under one or more contributor * license agreements. See the NOTICE file distributed with this work for * additional information regarding copyright ownership. * * GraphHopper 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 { /** * This method handles the specified (potentially negative) int as unsigned bit representation * and returns the positive converted long. */ public static final long toUnsignedLong(int x) { return ((long) x) & 0xFFFFffffL; } }