Function ruint::algorithms::div::reciprocal_ref

pub fn reciprocal_ref(d: u64) -> u64

⚠️ Computes $\floor{\frac{2^{128} - 1}{\mathtt{d}}} - 2^{64}$.

Requires $\mathtt{d} ≥ 2^{127}$, i.e. the highest bit of $\mathtt{d}$ must be set.