Looking at this code is like finding ancient hieroglyphics written by a mathematician who was simultaneously having a stroke and an existential crisis. The poor soul tasked with porting this Pascal monstrosity will need a PhD in numerical methods, a bottle of strong whiskey, and possibly an exorcist.
What we're witnessing here is some unholy signal processing algorithm with nested loops, mysterious polynomial calculations, and variables named with the creativity of someone who ran out of coffee three days ago. The comments? Non-existent. Documentation? A joke. The only thing more terrifying than reading this code is having to maintain it.
Whoever wrote this clearly subscribed to the "job security through obscurity" design pattern. Future archaeologists will carbon-date this Pascal code and conclude our civilization deserved its downfall.