Floating Point: Overflow

Certainly, I don't find the way to catch the floating point error, but I don't know how to set up a signal handler.
On the other hand, to give more information about my problem, the kind of network that I use is a special case of RBF, with the neurons of the hidden layer feedbacked with FIR filters. The floating point error comes when the filters have an order greater than 2. I thought that I understood how to do it, but the system doesn't work as expected, and I'm a little bit down for it.
I apprecciate your help

Hi again,
Lets think together. When the order of FIR filters are > 2 either there may occur an overflow due to power operation or the denomitators approaches to 0. So my first suggestion is to check your DIVISION operations.
For example
*  if Dividend is > 1 and your Divisor is < 1E-10 set the result to your MAX but not divide
           this may cause an overflow
Regards, Igor

What happens is a little bit strange. The error comes during the training, and when the order of the filter is 0, that is, a common RBF, everything works perfectly, so the problem must be during the propagation of a signal through the net, or during the updating of the coeficients in the filters.
Every neuron in the net is implemented as an object, and I checked out the operations with possible error, that is exponentials. Well, setting up a limit in these operations doesn't solve the problem. The error comes anyway.
I could send you the code for the object "neuron" if you want to, though the comments will not help very much, since they're in Spanish :-|

What happens is a little bit strange. The error comes during the training, and when the order of the filter is 0, that is, a common RBF, everything works perfectly, so the problem must be during the propagation of a signal through the net, or during the updating of the coeficients in the filters.
Every neuron in the net is implemented as an object, and I checked out the operations with possible error, that is exponentials. Well, setting up a limit in these operations doesn't solve the problem. The error comes anyway.
I could send you the code for the object "neuron" if you want to, though the comments will not help very much, since they're in Spanish :-|

Adjusted points to 600

"try"   that code !

__try {
...................//code to test
{

__except (  (GetExceptionCode() == EXCEPTION_FLT_OVERFLOW)  ?   EXCEPTION_EXECUTE_HANDLER  :  EXCEPTION_C0NTINUE_SEARCH )
{
   //   overflow management

}

Jean-Paul

The part of the code where the problem comes from can be seen at
http://www.geocities.com/SiliconValley/Hills/6142/Neuron.doc
There I wrote the theoretical formulas for the algorithm, and the code to implement a neuron in the hidden layer. If anyone wants to have a look.

Hi emilio !

I just have visited your Home page.....
but where have you hidden your Neuron. doc ???????

JPaul

I have been at some friends home this weekend and I could get to this document without any problem from their computer.
So the document is there, and not hiding. Anyway I'll try to upload it to any ftp server.
Once again, the address is:
http://www.geocities.com/SiliconValley/Hills/6142/Neuron.doc
Anyway, thanks a lot for trying.

There is now an ftp site to reach the problematic code:
the server is ftp.oce.orst.edu
and the directory is /pub/incoming/emilio/
There you can find these three files:
- Neuron.doc, with the algorithm explanation
- GAUSS.CPP, with the code for the neuron (it's included in the former document)
- NEURONA.HPP, with the headings and class declarations (also included in Neuron.doc)
The first document is still available in the other http site.