The direction of the inequality for XTsiz is probably reversed, e.g., _NL ≤ 4 for XTsiz ≥ 1024_ should be _NL ≤ 4 for XTsiz ≤ 1024_. 
The direction of the inequality for XTsiz is probably reversed, e.g., NL ≤ 4 for XTsiz ≥ 1024 should be NL ≤ 4 for XTsiz ≤ 1024.