public static uint select(uint src, Part24x4 part) => Bits.gather(src, (uint)part);
public static uint ToScalar(this Part24x4 src) => (uint)src;
public static uint select(uint src, Part24x4 part) => Bits.gather(src, (uint)part);
public static uint ToScalar(this Part24x4 src) => (uint)src;