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: find_internal.m
    path of file: ./repos/YALMIP/operators
    
    the code of the file until where you have to start completion: function Model = find_internal(pos,x)

n = length(x);

% Binary to model if element is non-zero
dp = binvar(1,n); % Positve
dn = binvar(1,n); % Negative
d = binvar(1,n);

% Binary to model if element is first non-zero
e = binvar(1,n);

[M,m] = derivebounds(x);
M = max(max(abs(M),max(abs(m))));
% Activate d iff value is sufficiently non-zero
Model = [x <= 0.00001 + M*dp, x >= -0.00001 - M*dn, -M*d <= x <= M*d,

    
function Model = find_internal(pos,x)

n = length(x);

% Binary to model if element is non-zero
dp = binvar(1,n); % Positve
dn = binvar(1,n); % Negative
d = binvar(1,n);

% Binary to model if element is first non-zero
e = binvar(1,n);

[M,m] = derivebounds(x);
M = max(max(abs(M),max(abs(m))));
% Activate d iff value is sufficiently non-zero
Model = [x <= 0.00001 + M*dp, x >= -0.00001 - M*dn, -M*d <= x <= M*d,
         x >= 0.00001-M*(1-dp),   x <= -0.00001 + M*(1-dn)];

% e(i) should be 1 if d(i) is the first 1
Model = [Model, d == dn + dp, e(1) == d(1), sum(e)==1];
for i = 2:n
     % No non-zeros so far so e must be 0
     Model = [Model, e(i) <= sum(d(1:i))];
     % Has to be activated if first 1
     Model = [Model, e(i) >= d(i)-sum(d(1:i-1))];
end