This is very rampant in code, for example, take a look here.
Evidently, this function is somewhat complex, i.e. the type of mathematical operations attached with it. However, that isnt the main case here. There are completely no documentations as to why some steps are taken, this heavily stalls the auditing process as we and other security researchers dont know what the intended behaviour is and cant really sit to break it.
Hard time understanding code for users/devs/auditors lead to bad integration.
Consider adding better documentations to even if not all functions then at least the core/complex ones.
