function bin_state = bin_state( int_state, m )% converts an vector of integer into a matrix; the i-th row is the binary form % of m bits for the i-th integerfor 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);   endendbin_state = state;