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function bin_state = bin_state( int_state, m ) 
% Copyright Matt C. Valenti 
% MPRG lab, Virginia Tech 
% for academic use only 
 
% converts an vector of integer into a matrix; the i-th row is the binary form  
% of m bits for the i-th integer 
 
for j = 1:length( int_state ) 
   for i = m:-1:1 
       state(j,m-i+1) = fix( int_state(j)/ (2^(i-1)) ); 
       int_state(j) = int_state(j) - state(j,m-i+1)*2^(i-1); 
   end 
end 
 
bin_state = state;