Here you can find the source of toDouble(byte[] bytes, int offset)
private static double toDouble(byte[] bytes, int offset)
//package com.java2s; /** I re-ported the (slightly modified) HBase's Bytes code here * to avoid dependencies on HBase in the common package of DML. * The copyright is included./* w w w. j a v a2 s.co m*/ * * * Copyright 2010 The Apache Software Foundation * * 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 { public static final int SIZEOF_LONG = Long.SIZE / Byte.SIZE; private static double toDouble(byte[] bytes, int offset) { return Double.longBitsToDouble(toLong(bytes, offset)); } private static long toLong(byte[] bytes, int offset) { if (offset + SIZEOF_LONG > bytes.length) { throw new RuntimeException("Cannot decode long from the buffer"); } long l = 0; for (int i = offset; i < offset + SIZEOF_LONG; i++) { l <<= 8; l ^= bytes[i] & 0xFF; } return l; } }