Infinite looping: Knowing its presence in a big program?

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Jaya on 25 Oct 2021
Commented: John D'Errico on 25 Oct 2021
I have a big code and multiple .m files connected to it. The program itself takes time and was running perfectly. But I made changes and I see the program running. But I have a slight doubt that maybe it is not progressing and is somewhere caught in infinite looping.
So, the curiosity to ask this question that are there any tricks or methods followed by programmers to catch the points of infinite looping in their codes so that it kind of stops or throws some exception,etc?

Accepted Answer

Jan on 25 Oct 2021
You can prove, that there are no "tricks" to determine securely in advance if a program stops or runs in an infinite loop.
There is a limit for recursive calls in Matlab. If the code contains an iteration, testing if the current value differs from the last one, is not sufficient, because the value might be repeated with a certain period or chaotic.
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John D'Errico
John D'Errico on 25 Oct 2021
The best you can probably do is to learn to use the debugger, and to use it effectively.

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