You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: motif4funct_bin.m
    path of file: ./repos/fieldtrip/external/bct
    
    the code of the file until where you have to start completion: function [f,F]=motif4funct_bin(A)
%MOTIF4FUNCT_BIN       Frequency of functional class-4 motifs
%
%   [f,F] = motif4funct_bin(A);
%
%   *Structural motifs* are patterns of local connectivity in complex
%   networks. In contrast, *functional motifs* are all possible subsets of
%   patterns of local connectivity embedded within structural motifs. Such

    
function [f,F]=motif4funct_bin(A)
%MOTIF4FUNCT_BIN       Frequency of functional class-4 motifs
%
%   [f,F] = motif4funct_bin(A);
%
%   *Structural motifs* are patterns of local connectivity in complex
%   networks. In contrast, *functional motifs* are all possible subsets of
%   patterns of local connectivity embedded within structural motifs. Such
%   patterns are particularly diverse in directed networks. The motif
%   frequency of occurrence around an individual node is known as the motif
%   fingerprint of that node. The total motif frequency of occurrence in
%   the whole network is correspondingly known as the motif fingerprint of
%   the network.
%
%   Input:      A,      binary directed connection matrix
%
%   Output:     F,      node motif frequency fingerprint
%               f,      network motif frequency fingerprint
%
%   Notes: 
%       1. The function find_motif34.m outputs the motif legend