To make things a little easier for those interested, here are two links:
http://www.econ.univpm.it/lucchetti/gretl/genr-list.tex
This is the "state of the art", which incorporates the material sent to me
by Ignacio with slight modifications. Here you'll find the most recent
version of this file. Again, when this is nearly completed it'll become
part of the manual and the link above will disappear.
http://gretl.cvs.sourceforge.net/gretl/gretl/lib/src/genlex.c?view=markup...
This is the most recent version of lib/src/genlex.h: the lines you'll want
to have a look at go approximately from 50 to 250. Roughly spaking, it's a
list of accepted genr functions, with their translation to gretl's
internal representation. For example, line 115 reads
115 { ABS, "abs" },
which means that genr knows about a function named "abs" (internally known
as ABS. Your best bet is to write about those you know and maybe try
things out. I will take care of the most obscure ones.
Riccardo (Jack) Lucchetti
Dipartimento di Economia
Università Politecnica delle Marche
r.lucchetti(a)univpm.it
http://www.econ.univpm.it/lucchetti