Xcalc is a fairly basic calculator that allows mathmatical equations to be entered via the console or by using the GUI calculator interface.

Xcalc is based off of QuickCalc by Mark Ribau. A good portion of the code has been rewritten, and the GUI has been completely rewritten.

Usage slash commands: /xcalc /calc /=

Screenshots: 

So I was making a few relatively minor updates/changes to my mod xcalc, and as I was doing so realized that by following the original design from another person it was all out of whack. Xcalc was originally written by someone else like 3 years ago, I got a hold of it back then and there is only a very little left of his original code. But I was following similar design as that person and realized the other day that it was a bit whacked out for how it should be. Basically its several hours more worth of cleanup and writing that still needs to be done for that mod.

So finally after about 6 months or so I got around to updating my World of Warcraft mod xcalc. Originally this mod I was using to learn a bit about lua and such, but as it turned out a fair amount of people wanted a calculator in wow and such. The update was not much more than some bug fixes I really didn't add any features to the bill, there is only so many things that I can do at this point with it that might be useful like maybe a history of the last several calculations performed, and some better control on what kind of calculations can be performed.