[fluffything]

Can you solve the exact same problem using Python list comprehensions or Rust iterators?

I'd like to see how solving this same problem in those languages is less of a nightmare.

I personally find that C loop quite readable compared with the same iteration being done in Rust.

[pcwalton]

This is a sum of absolute differences, so in Rust:

    let satd = d.iter().cloned().map(abs).sum();

As an added bonus, there's no undefined behavior!