Example usage for org.apache.lucene.util BitUtil zigZagDecode

Introduction

In this page you can find the example usage for org.apache.lucene.util BitUtil zigZagDecode.

Prototype

public static long zigZagDecode(long l) 

Source Link

Document

Decode a long previously encoded with #zigZagEncode(long) .

Usage

From source file:org.codelibs.elasticsearch.common.io.stream.StreamInput.java

License:Apache License

public long readZLong() throws IOException {
    long accumulator = 0L;
    int i = 0;//from  w  w w  . j a  va 2  s.c  o m
    long currentByte;
    while (((currentByte = readByte()) & 0x80L) != 0) {
        accumulator |= (currentByte & 0x7F) << i;
        i += 7;
        if (i > 63) {
            throw new IOException("variable-length stream is too long");
        }
    }
    return BitUtil.zigZagDecode(accumulator | (currentByte << i));
}

---