[ns] About debug in NS2

Dear all,

I am new to NS2.

Now I have already add new protocols into NS2 and compiled it successfully.

And in some simple examples, it works well.

But problem occurred when I try to simulate some complicated situations.

It would give a error message of "Floating point exception".

Any one could tell me that how could I debug my CPP code? Or any
suggestions?

I would search for some materials myself. But if anyone have related
experience , could you please share with me?

Thanks.

Brs,

James