Extract the sign bits from each lane return them in the first 4 bits. /// "x" lane is bit 0. /// "y" lane is bit 1. /// "z" lane is bit 2. /// "w" lane is bit 3.
Extract the sign bits from each lane return them in the first 4 bits. /// "x" lane is bit 0. /// "y" lane is bit 1. /// "z" lane is bit 2. /// "w" lane is bit 3.