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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 run :- Strdata = [10,20,5,100,1,6,2,3],
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9 datagen(Strdata,Data),
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10 pipe(Data,Out),
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11 length(18).
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12
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13 % Data Generator
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14
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15 datagen([],[]).
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16 datagen([H|T],Out) :-
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17 Out = [H], @T = T, @datagen(T,Out).
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18
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19 % Pipeline Merge Sorter
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20
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21 pipe(I0,Out) :-
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22 I1 = [], I2 = [], Out = [],
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23 proc_start(I0,I1, 2,1),
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24 proc_start(I1,I2, 4,2),
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25 proc_start(I2,Out,8,4).
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26
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27 % Processor Unit
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28
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29 proc_start(I,O,P,PP) :-
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30 X = [], Y = [], Z = [], T = 1,
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31 #proc(I,O,X,Y,Z,T,P,PP).
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32
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33 proc(I,O,X,Y,Z,T,P,PP) :- X=[],Y=[],I=[],
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34 @X=X, @Y=Y, @Z=Z, @O=[], @T=1.
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35 proc(I,O,X,Y,Z,T,P,PP) :-
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36 load(I,O,X,Y,Yn,Z,Zn,T,P,PP),
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37 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP).
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38
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39 load(I,O,X,Y,Yn,Z,Zn,T,P,PP) :- PP>=T,
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40 append(Z,I,Zn), @Z=Zn, Yn=Y, @T=T+1.
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41 load(I,O,X,Y,Yn,Z,Zn,T,P,PP) :- T>PP,T<P,
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42 append(Y,I,Yn), @Z=[],@T=T+1.
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43 load(I,O,X,Y,Yn,Z,Zn,T,P,PP) :- T>PP,T>=P,
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44 append(Y,I,Yn), @Z=[],@T=1.
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45
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46 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP) :-X=[],Yn=[],
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47 @O=[], @Y=Yn,switch(T,PP,X,Zn,X).
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48 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP) :- X=[A|L],Yn=[],
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49 @O=[A], @Y=Yn,switch(T,PP,X,Zn,L).
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50 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP) :-X=[],Yn=[B|N],
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51 @O=[B], @Y=N,switch(T,PP,X,Zn,X).
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52 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP) :-X=[A|L],Yn=[B|N],
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53 A<B,
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54 @O=[A], @X=L, @Y=Yn.
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55 merge(I,O,X,Y,Yn,Z,Zn,T,P,PP) :-X=[A|L],Yn=[B|N],
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56 A>=B,
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57 @O=[B], @Y=N, @X=X.
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58
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59 switch(T,PP,X,Zn,L) :- T=PP, @X=Zn.
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60 switch(T,PP,X,Zn,L) :- T\=PP, @X=L.
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61
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62
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63 append(Nil,L,L1) :- Nil=[],L=L1.
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64 append(X,L,Y) :-[H|T]=X,[H1|M]=Y,
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65 H=H1,append(T,L,M).
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66
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