News Archive

January Update | Jan. 19, 2008
2007 was a great year for us! The annual revenue more than doubled and sales have continued strong into the first weeks of January. Thank you for your feedback on our products, as we continue implementing the various improvements you request.

As of November, Nathan has started a full time job but will continue answering email and pushing out new releases on evenings and weekends. Richard will be coding features and bug fixes including an updated Jep Extensions package which is compatible with Jep 3. We look forward to releasing top quality solutions for you!

Jep 3.1 Release | Oct. 09, 2007
The 3.1 version of our main product was recently released. This update includes minor bug fixes and adds serialization support. The && and || operators now evaluate using short-circuit logic for faster performance and the functions min, max and avg have been added. Download the trial version, and take it for a spin!

Racing with Jep | Jul. 18, 2007
Jep is used in numerous different applications. We recently interviewed Stefan Windt about how he is using Jep in the telemetry system for the Lions Racing team in Germany. Read the full article here.

Jep 3 Release | Jul. 8, 2007
It is finally out - Jep 3 is released! This new version includes a set of exciting new features, making Jep even faster, and even more accurate. We have restructured the library to permit modular development of components, giving you more power and flexibility in your development.

The new BigDecimal components allow you to perform calculations using the BigDecimal class for representing numbers. This gives you full control over the accuracy of your calculations - ideal for financial calculations where floating point arithmetic is not enough.

A new configurable parser gives you more flexibility in adapting the expression syntax to your needs. And a new fast evaluator increases the evaluation speed up to 6x!

As earlier announced, Jep has now gone from a dual-license (GPL/commercial) model to a pure proprietary model. This new licensing model is intended to sustain Jep for years to come.

The Jep 3 trial is available for download - so download and enjoy!

Jep 2.4.1 | Apr. 30, 2007
We know not to dress up bugs as features... so we have read your bug reports and patched the pesky little flaws. Jep and Extensions are now fresh again with no known bugs! Here's what we have changed since Jep 2.4.0 and Extensions 1.1.0:

Added the rounding functions round, floor and ceil
Fixed three minor bugs in Jep: 1670974 1706295 1563324
Fixed the bug 1567116 in the extensions library

Keep sending us your bug reports! We appreciate each and every one.

Jep 3 | Mar. 30, 2007
A new release of Jep is coming! We are working hard on getting the new version out as soon as possible. Based on your feedback, we have decided to implement the following new features:

Support for BigDecimal arithmetic
Improved evaluation performance
New configurable parser added
Redesigned modular package structure
Redesigned main class
Built using JavaCC 4.0
Makes use of newest Java features

Last minute requests for small enhancements are still welcome! To be notified about the new release, enter your email address in the Jep download form.

AutoAbacus | Dec. 20, 2006
The equation solving package is now being made available as a Java library rather than as an application. To obtain an evaluation trial version of the software, visit the AutoAbacus trial page.

Educational Licenses | Dec. 20, 2006
Despite Jep no longer being released as open-source software, there will be educational licenses available. So if you are in the academic environment with little cash on hand, you should not shy away from using Jep.

Closing Jep source | Nov. 4, 2006
Much to our regret, the next major release of Jep will no longer be available under the GPL. This means that licenses for new releases will have an associated fee. The change is necessary since the current dual-licensing scheme is not generating sufficient revenue to sustain development of Jep. Your comments are welcome in the Jep Forum.

Switching to Subversion | Jul. 24, 2006
After repeated failed attempts to migrate the existing CVS repository to Subversion, it has been decided to postpone the migration. As with any new system there are a number of problems with Sourceforge's migration utilities. We will attempt the transition again when the Sourceforge utilities have been refined. For now Jep will remain on CVS.

Jep Download Survey | Jun. 30, 2006
A new survey has been added before the Jep download as you may have already noticed. We do not want to annoy people, but it was necessary since we were not getting sufficient feedback on where to take Jep in future releases.

From the first week of running the survey we have already been able to get a better idea of who all is downloading Jep and what new features people are interested in. So thank you if you have filled out this form.

And remember that if you have more feedback for us on anything, you can always click the Leave Feedback link at the bottom of the web pages.

Switching to Subversion | Jun. 27, 2006
Out of joy for technology we will be switching over our source control system from CVS to Subversion :) This means that if you are currently watching the CVS tree of Jep through sourceforge.net you will need to also switch to Subversion with us. We're looking forward to the benefits that come with this new system! We'll keep you posted on the status of this transition.

Jep 2.4 and Extensions 1.1 | Jun. 7, 2006
A new version of Jep and the Jep Extensions has been released! Updates to Jep include improved error handling, new built-in functions, observable variable creation together with some bug fixes.

Many significant features have been added to the Jep Extensions (formerly DJep). These include expression simplification, fast evaluation and better support for vectors and matrices. Enjoy!