Here you can find the source of longFromBigEndainArray(byte[] buf, int offset, int len)
Parameter | Description |
---|---|
buf | byte array source |
offset | offset into array |
len | number to read (must be 8 or less |
public static long longFromBigEndainArray(byte[] buf, int offset, int len)
//package com.java2s; /**//w w w . j av a2 s . c o m * static byte array utilities * * Copyright (c) 2004, Pat Farrell, All rights reserved. * * 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. * 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 { /** * utility to build a long from values in an array of bytes in bigEndian order * @param buf byte array source * @param offset offset into array * @param len number to read (must be 8 or less * @return a long */ public static long longFromBigEndainArray(byte[] buf, int offset, int len) { long val = 0; for (int i = 0; i < len; i++) { val = val << 8; int d = (0xff & buf[i + offset]); val += d; } return val; } }