pub fn mlkem_ntt_w16(input: &[Word16]) -> Vec<Word16>Expand description
Word16-native forward NTT — coefficients are carried as Word16 (u16) in [0, q), so the
boundary is a plain reinterpret (w.0 as i16, exact since q < 2¹⁵), no rem_euclid and no
i64 round-trip. The experimental fast carrier for the Word16-representation crypto.