pub const MONT_R: i64 = 65536;Expand description
Montgomery radix R = 2¹⁶ and qinv' = −q⁻¹ mod R = 3327, with the exact integer cofactor
(qinv'·q + 1) / R = 169. These are the constants of the division-free reduction
redc(x) = (x + ((x·qinv') mod R)·q) / R used by the (SIMD) ML-KEM NTT.