me.lemire.integercompression
Class S9

java.lang.Object
  me.lemire.integercompression.S9

public final class S9
extends Object

This is a version of Simple9 optimized for NewPFOR, OptPFOR

Author:

Daniel Lemire

Constructor Summary

S9()

Method Summary

protected static int	compress(int[] in, int currentPos, int inlength, int[] out, int tmpoutpos)
static int	estimatecompress(int[] in, int currentPos, int inlength) Estimate size of the compressed output.
protected static void	uncompress(int[] in, int tmpinpos, int inlength, int[] out, int currentPos, int outlength)

Methods inherited from class java.lang.Object

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

Constructor Detail

S9

public S9()

Method Detail

estimatecompress

public static int estimatecompress(int[] in,
                                   int currentPos,
                                   int inlength)

Estimate size of the compressed output.

Parameters:

in - array to compress

currentPos - where to start reading

inlength - how many integers to read

Returns:

estimated size of the output (in 32-bit integers)

compress

protected static int compress(int[] in,
                              int currentPos,
                              int inlength,
                              int[] out,
                              int tmpoutpos)

uncompress

protected static void uncompress(int[] in,
                                 int tmpinpos,
                                 int inlength,
                                 int[] out,
                                 int currentPos,
                                 int outlength)