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0
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1
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2 test :- Strdata = [10,20,5,100,1,6,2,3],
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3 datagen(Strdata,Data),
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4 pipe(Data,Out),
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5 length(18),
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6 #write(Out).
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7
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8 % Data Generator
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9
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10 datagen([],[]).
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11 datagen([H|T],Out) :-
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12 Out = [H],
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13 @T = T, @datagen(T,Out).
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14
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15 % Pipeline Merge Sorter
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16
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17 pipe(I0,Out) :-
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18 I1 = [], I2 = [], Out = [],
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19 proc_start(I0,I1, 2,1),
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20 proc_start(I1,I2, 4,2),
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21 proc_start(I2,Out,8,4).
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22
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23 % Processor Unit
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24
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25 proc_start(I,O,P,PP) :-
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26 X = [], Y = [], Z = [], T = 1,
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27 #proc(I,O,X,Y,Z,T,P,PP).
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28
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29 proc(I,O,X,Y,Z,T,P,PP) :- X=[],Y=[],I=[],!,
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30 @X=X, @Y=Y, @Z=Z, @O=[], @T=1.
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31 proc(I,O,X,Y,Z,T,P,PP) :-
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32 load(I,O,X,Y,Yn,Z,Zn,T,P,PP),
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33 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP).
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34
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35 load(I,O,X,Y,Yn,Z,Zn,T,P,PP) :- T=<PP, !,
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36 append(Z,I,Zn), @Z=Zn, Yn=Y,
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37 @T=T+1.
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38 load(I,O,X,Y,Yn,Z,Zn,T,P,PP) :-
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39 append(Y,I,Yn), @Z=[],
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40 (if T<P then @T=T+1 else @T=1).
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41
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42 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP) :-X=[],Yn=[],!,
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43 @O=[], @Y=Yn,
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44 (if T=PP then @X=Zn else @X=X).
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45 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP) :- X=[A|L],Yn=[],!,
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46 @O=[A], @Y=Yn,
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47 (if T=PP then @X=Zn else @X=L).
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48 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP) :-X=[],Yn=[B|N],!,
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49 @O=[B], @Y=N,
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50 (if T=PP then @X=Zn else @X=X).
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51 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP) :-X=[A|L],Yn=[B|N],!,
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52 (if A<B then
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53 @O=[A], @X=L, @Y=Yn
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54 else
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55 @O=[B], @Y=N, @X=X).
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56
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57 append(Nil,L,L1) :- Nil=[],L=L1.
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58 append(X,L,Y) :-[H|T]=X,[H1|M]=Y,
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59 H=H1,append(T,L,M).
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60
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