[Maxima] Strange behavior of atom()

[Richard Fateman]

> -----Original Message-----
> From: maxima-bounces at math.utexas.edu [mailto:maxima-
> bounces at math.utexas.edu] On Behalf Of Kostas Oikonomou
> Sent: Tuesday, January 09, 2007 8:37 AM
> To: maxima at math.utexas.edu
> Subject: [Maxima] Strange behavior of atom()
> 
....

> 
> 
> It seems to me that the documentation not consistent with these results.
> Or am I missing something?

Yes.  You are missing "evaluation." Try typing sin(2.0)  and see if it looks
like an atom to you.   Try sin(3/2), also.

Is  2+2 an atom?  If you first compute 4, then it is an atom.