newlips :- true.

nrev([],[]).
nrev([X|Rest],Ans) :- nrev(Rest,L), append(L,[X],Ans).

append([],L,L).
append([X|L1],L2,[X|L3]) :- append(L1,L2,L3).

bench(Count) :- cputime(T0),dodummy(Count),cputime(T1),
	dobench(Count),cputime(T2),
	report(Count,T0,T1,T2).

dobench(Count) :- data(List),repeat(Count),nrev(List,_),fail.
dobench(_).

dodummy(Count) :- data(List),repeat(Count),dummy(List,_),fail.
dodummy(_).

dummy(_,_).

data(X) :- data(X,30).
data([],0).
data([a|Y],N) :- N > 0, N1 is N-1, data(Y,N1).
/* data([a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,aa,bb,cc,dd]). */

repeat(N).
repeat(N) :- N > 1, N1 is N-1, repeat(N1).

report(Count,T0,T1,T2) :- write(T0),nl,write(T1),nl,write(T2),nl,
	Time1 is T1 - T0,write(Time1),nl,
	Time2 is T2 - T1,write(Time2),nl,
	Time is Time2-Time1,write(Time),nl,
	Lips is (496*Count*1000)/Time,
	write('Lips = '),write(Lips), nl.