BITS_ROUNDDOWN_BYTES
(BITS_ROUNDDOWN_BYTES(bits) + !!BITS_PER_BYTE_MASKED(bits))
bytes_offset = BITS_ROUNDDOWN_BYTES(struct_bits_off);
bytes_offset = BITS_ROUNDDOWN_BYTES(struct_bits_off);
data += BITS_ROUNDDOWN_BYTES(total_bits_offset);
bytes_offset = BITS_ROUNDDOWN_BYTES(struct_bits_off);
bytes_offset = BITS_ROUNDDOWN_BYTES(struct_bits_off);
bytes_offset = BITS_ROUNDDOWN_BYTES(struct_bits_off);
bytes_offset = BITS_ROUNDDOWN_BYTES(member_offset);
bytes_offset = BITS_ROUNDDOWN_BYTES(struct_bits_off);
(BITS_ROUNDDOWN_BYTES(bits) + !!BITS_PER_BYTE_MASKED(bits))
data += BITS_ROUNDDOWN_BYTES(total_bits_offset);
data_off = data + BITS_ROUNDDOWN_BYTES(bit_offset);