README

Code used on Daniel Lemire's blog

by D. Lemire

blog: http://lemire.me/blog/



This code is meant to illustrate ideas
that I present on my blog. Don't expect or
ask for industrial-strength software. It is
experimental code: it can be wrong, slow, poorly
coded and poorly documented.

I do maintain some software meant for actual
use, with bona fide unit testing and documentation.
The code here does not fit in this category.


== Corresponding blog posts ==

Code is provided in support of the following blog posts:
  
  Data alignment for speed: myth or reality?
  http://lemire.me/blog/archives/2012/05/31/data-alignment-for-speed-myth-or-reality/

  Fast bitmap decoding
  http://lemire.me/blog/archives/2012/05/21/fast-bitmap-decoding/
  
  Bit packing is fast, but integer logarithm is slow
  http://lemire.me/blog/archives/2012/04/05/bit-packing-is-fast-but-integer-logarithm-is-slow/

  How fast is bit packing?
  http://lemire.me/blog/archives/2012/03/06/how-fast-is-bit-packing/

  Bitmaps are surprisingly efficient
  http://lemire.me/blog/archives/2012/02/17/bitmaps-are-surprisingly-efficient/

  Use random hashing if you care about security?
  http://lemire.me/blog/archives/2012/01/17/use-random-hashing-if-you-care-about-security/

  The language interpreters are the new machines
  http://lemire.me/blog/archives/2011/06/14/the-language-interpreters-are-the-new-machines/

  3 surprising facts about the computation of scalar products
  http://lemire.me/blog/archives/2011/11/28/3-surprising-facts-about-the-computation-of-the-scalar-product/

  Make your own programmable digital thermometer in an hour
  http://lemire.me/blog/archives/2010/12/24/make-your-own-programmable-digital-thermometer-in-an-hour/

  For your in-memory databases, do you really need an index?"
  http://lemire.me/blog/archives/2010/12/20/for-your-in-memory-databases-do-you-really-need-an-index/

  Is multiplication slower than addition?
  http://lemire.me/blog/archives/2010/07/19/is-multiplication-slower-than-addition/

  Sorting is fast and useful
  http://lemire.me/blog/archives/2010/05/20/sorting-is-fast-and-useful/

== languages ==

You'll find code written in :

- C
- C++
- Java
- Python

and possibly other languages.


== licensing ==

Unless otherwise stated, I make no copyright claim
on this code: you may consider it to be in the public
domain.

Don't bother forking this code: just steal it.