Function div_nx2 

pub unsafe fn div_nx2(limbs: &mut [u64], divisor: u128) -> u128

⚠️ Compute double limb division.

⚠️ This function is not part of the stable API.

Same as [`div_nx2_normalized`] but does the shifting of the numerator inline.

Safety

• The highest limb of numerator must be nonzero.
• The divisor’s high word is non-zero (i.e., divisor >= $2^{64}$).

In debug, may panic if any condition of use is violated. In release, may panic or trigger UB if any condition of use is violated.