On Tue, Apr 15, 2008 at 2:42 PM, Luc Maisonobe <[EMAIL PROTECTED]> wrote: > The proposal for the nabla sandbox component has been put in the svn > repository. You can view it online at the following URL: > > > http://svn.apache.org/viewvc/commons/sandbox/nabla/trunk/PROPOSAL.html?view=co > > The existing code has been imported too (sorry for the commit noise). You > can check it out and look at it. It has been developped using Java 1.5, but > there is no real need for this version. If you prefer to have 1.4 compatible > code, I will remove the parametric collections I used. For a new packages, I > thought 1.5 would be a good start but I would like to hear your comments.
Luc, the current code requires Java 1.6 to build. Niall > All tests do pass, the tests are a good way to understand what the package > does. In many test cases, there are small classes implementing the > ReferenceFunction interface (used only for tests). This interfaces defines > both the f function that will be differentiated and the fPrime function that > is the derivative of the previous one. Of course, the implementation of this > function is for reference purposes: the differentiation process uses only > the f function and generate the derivative, then the test harness compare > this generated function with the exact one implemented by fPrime. You will > see that in many cases, the error is exactly 0 and in some cases I had to > use a comparison threshold between 1.0e-13 and 1.0e-16. > > I am ready to hear any comments or complaints. If some of you want to > contribute, just add your name to the proposal in the inital contributors > section and let me know. Building a community around this project is one of > my main goal now. > > Luc --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
