Here you can find the source of bitmap64(byte... table)
static long bitmap64(byte... table)
//package com.java2s; /*/*from w w w . j av a2s .c o m*/ * Copyright (C) 2013 Wayne Meissner * * This file is part of the Walters project (http://github.com/wmeissner/walters). * * 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. */ public class Main { static long bitmap64(byte... table) { long map = 0; for (int i = 0; i < table.length; i++) { if (table[i] != 0) { map |= (1 << i); } } return map; } }