fuzzy logic triplets multiplication for overall scores

So=[0 0 0;0 0 0;0 0 0;0 0 0];

>> for i=1:k

CC=[fuzzyf(S1(i,:),Qrel(i,:));fuzzyf(S2(i,:),Qrel(i,:));...

fuzzyf(S3(i,:),Qrel(i,:));fuzzyf(S4(i,:),Qrel(i,:))];

So=So+CC;

end

can anyone tell me what does fuzzyf mean in this code . it is from earlier versions of matlab . i am trying use triplets for overall scores using a multiplication rule