Annotated using CiaoPP:
:- mode(app/3, [+,+,-]).
:- measure(app/3, [length,size,size]).
%complexity: app(i,i,o).
app([],X,X).
app([X|Xs],Ys,[X|Zs]) :-
	app(Xs,Ys,Zs).


/*TWDESC

This is the append program

*/

/*TWDEMO

selected_norms([listlength]).
*/
/*.

*/


Caslog 1.0, April 1992.

* Mutually exclusive classes of clauses for predicate app/3 :

[[1],[2]]

* Size functions for predicate app/3 :

[$(1),$(2),bot]

* Relation functions for predicate app/3 :

[inf]

* Solution functions for predicate app/3 :

[1]

* Time functions for predicate app/3 :

[$(1)+1]

{Exexution Time: 4.001 msec}

{End of Caslog execution.}