function C = setdiff_C(A,B)
% SETDIFF Compute C = { x: x in A, x not in B }
% C = setdiff(A,B)

% This is faster than the built-in setdiff
% /usr/sww/pkg/matlab-5.2/toolbox/matlab/ops/setdiff.m     

C = C_fast_set(A(:),B(:),0);
