MATLAB: How to half the value of a constant inside an iteration

iteration

I have an iteration loop. Inside the loop, I have a constant gamma. I want its starting value to be 10e-8. I want to half its value on every iteration (10e-4 on second iteration). How to do it?
maxiter = 100;
while iter< maxiter
    gamma = 1Oe-8
    f = gamma * p;
end

Best Answer

maxiter = 100;
iter = 1;
x = 1:1:99;
n = 8*(1/2).^x; % n = 8 , 4, 2, 0.5,...
while iter< maxiter
    gamma = 10 * 10^(-n(iter)); % 10e-8, 10e-4,...
    f = gamma * p;
    iter = iter + 1;
end
edit: changed x to 1:1:99 instead of 1:1:100
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