code running endlessly without stopping

I have the below Matlab code and it has been running endlessly without stopping. I have checked and could not detect any error on it.

% specify upper bound.

Iu=1;

% specify lower bound

IL=0;

% specify the probility matrix

Pyc = [0.9 0.05 0.05; 0.05 0.9 0.05; 0.05 0.05 0.9];

% specify the error

e = 0.008;

[N,M]=size(Pyc);

Pc=(1/M).*ones(M,1);

Qy=Pyc*Pc;

F=zeros (1,M);

while (Iu-IL)>e

end

for j=1:M

temp=0;

for k=1:N

temp = temp+((Pyc(k,j))*log((Pyc(k,j))/Qy(k)));

end

F(j)=exp(temp);

end

x=F*Pc;

IL=log2(x)

Iu=log2(max(F));

If (Iu - IL)<e

Cc=IL;

Answer 1

[Voss]

These lines:

while (Iu-IL)>e
end

define an endless loop, according to the values of the variables Iu, IL, and e you have defined.