[Jprogramming] Virus ?

[Roger Hui]

A long shot:  if x is NaN, it is possible for x to be
changed after executing for the following C code:

   double t,x;
   t=x;
   x=t;

In any case, it may be useful to identity the
byte/halfword/word/double that got changed and 
see if you can spot a pattern.  If the halfword is 
0xfff8 (or 0xf8ff) then I'll bet that NaN is the culprit.



----- Original Message -----
From: Ralph G Selfridge <selfrid at cns.ufl.edu>
Date: Thursday, July 10, 2008 15:35
Subject: [Jprogramming] Virus ?
To: programming at jsoftware.com

> This not a question about J really.
> 
> I run Norton 360 as a virus check. I have J and APL. Now with a 
> small 
> number of APL ws some of the variables are changed when I run 'scan'.
> 
> I've just spent 20 minutes seaching the Norton support site to 
> find out 
> where to ask the question and end up in a terrible mood.
> 
> Any ideas about where I go?
> 
> Thanks,  Ralph