pub const fn parity(n: u64) -> Option<CollatzParity>Expand description
Returns the parity of a positive input.
Returns None when n == 0.
ยงExamples
use use_collatz::{CollatzParity, parity};
assert_eq!(parity(8), Some(CollatzParity::Even));
assert_eq!(parity(9), Some(CollatzParity::Odd));
assert_eq!(parity(0), None);