Ciao Preprocessor (integrated Alpha version)
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{written file /tmp/tmpSmONT4/duplicate_eterms_shfr_nfg_resources_co.pl}
:- module(_1,[duplicate/2],[assertions,predefres(res_steps),nativeprops,basicmodes,regtypes]).
:- entry duplicate(A,B)
: ground(A).
:- true pred duplicate(A,B)
: ( gnd(A), term(B) )
=> ( list(A,gnd), rt8(B) ).
:- true pred duplicate(A,B)
: ( mshare([[B]]), ground([A]) )
=> ground([A,B]).
:- true pred duplicate(A,B)
: ( gnd(A), term(B) )
=> ( list(A,gnd), rt8(B) )
+ ( possibly_fails, not_covered ).
:- true pred duplicate(A,B)
: ( gnd(A), term(B) )
=> ( list(A,gnd), rt8(B), size(lb,A,length(A)), size(lb,B,2*length(A)) )
+ cost(lb,steps,0).
:- true pred duplicate(A,B)
: ( gnd(A), term(B) )
=> ( list(A,gnd), rt8(B), size(ub,A,length(A)), size(ub,B,2*length(A)) )
+ cost(ub,steps,length(A)+1).
duplicate([],[]).
duplicate([X|Y],[X,X|Z]) :-
duplicate(Y,Z).
:- regtype rt8/1.
rt8([]).
rt8([A,B|C]) :-
gnd(A),
gnd(B),
rt8(C).