Package org.elasticsearch.geometry.utils

Class BitUtil

java.lang.Object
org.elasticsearch.geometry.utils.BitUtil
public class BitUtil
extends java.lang.Object
Utilities for common Bit twiddling methods. Borrowed heavily from Lucene (org.apache.lucene.util.BitUtil).

  • Constructor Summary

    Constructors 
    Constructor Description
    BitUtil()  

  • Method Summary

    Modifier and Type Method Description
    static long deinterleave​(long b)
    Extract just the even-bits value as a long from the bit-interleaved value
    static long flipFlop​(long b)
    flip flops odd with even bits
    static long interleave​(int even, int odd)
    Interleaves the first 32 bits of each long value Adapted from: http://graphics.stanford.edu/~seander/bithacks.html#InterleaveBMN

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

  • Method Details

    • interleave

      public static long interleave​(int even, int odd)
      Interleaves the first 32 bits of each long value Adapted from: http://graphics.stanford.edu/~seander/bithacks.html#InterleaveBMN

    • deinterleave

      public static long deinterleave​(long b)
      Extract just the even-bits value as a long from the bit-interleaved value

    • flipFlop

      public static final long flipFlop​(long b)
      flip flops odd with even bits