I know what you wrote is just pseudocode, but it doesn't contain any exit condition. As given, it would be an infinite loop, which is contrary to what you describe. I'd need to know how you intend for the loop to exit.
If your while loop doesn't have an exit condition described in the first line (e.g. like this:)
% specify the exit condition normally
error=1;
while error>tol
% do stuff
error=abs(thing1-thing2);
end
Then it will have to break conditionally like this:
% or break out directly
while 1
% do stuff
if thinghappens
break;
end
end
Without knowing what the exit condition is and how it's satisfied, there's no way to answer this question with greater specificity. If it's exiting early, observe the value of the variables used to satisfy the exit condition and try to see if they are achieving their required values early or if the logical tests are incorrectly evaluating them.
