My understanding of how this shook out: https://www.reddit.com/r/rust/comments/7m99wo/outperforming_rust_with_functional_programming/drt8ltq/ https://www.re

My understanding of how this shook out: https://www.reddit.com/r/rust/comments/7m99wo/outperforming_rust_with_functional_programming/drt8ltq/ https://www.reddit.com/r/rust/comments/7m99wo/outperforming_... tl;dr: the C and Rust versions had signed integers rather than unsigned like the ATS version, and if you make that change they end up more similar.