BITS_PER_U128
if (nr_copy_bits > BITS_PER_U128) {
if (nr_copy_bits > BITS_PER_U128) {
if (nr_bits > BITS_PER_U128) {
BITS_PER_U128);
left_shift_bits = BITS_PER_U128 - nr_copy_bits;
right_shift_bits = BITS_PER_U128 - nr_bits;