On Sat, Oct 25, 2008 at 08:30:24PM +0200, PICS wrote: > Using: > > if (_long.data != _long.data) > > worked perfectly > > I did not find either a MACRO nor a function named "isnan" in all the librarys How could this work? Wouldn't "_long.data != _long.data" always be false? Matthew -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist