Latex (Tex live) update on Macosx

I recently had a problem with my Latex distribution. I was missing a package and as you may probably know, there are so many Tex distributions and it is difficult to keep up-to-date the installation. Updates work for a year and then you need to install tex distribution once more if you want to get new packages that were not there or updated for the new distribution. In these cases, manual installation could be helpful... What I did for manual installation:
- Copied the .sty file to /usr/local/texlive/2010/texmf-dist/tex/latex  (note that this may change in your system)
- Ran texhash (with sudo).

Good luck...

Two's complement, bitwise operations, old school info:)

When I was playing with a Java library, I realized that I need to refresh some prehistoric information. The bitwise operations in Java :
http://www.leepoint.net/notes-java/data/expressions/bitops.html

Then I found myself looking integer representations in binary formats (4Bytes) that are useful to understand the effects of bitwise operations:
http://en.wikipedia.org/wiki/Two%27s_complement

Stay tuned...