fn get_byte_num_by_bit()

in src/index.rs [269:275]


    fn get_byte_num_by_bit(bit_num: usize) -> usize {
        let mut byte_num = bit_num / BYTE_SIZE;
        if bit_num % BYTE_SIZE > 0 {
            byte_num += 1;
        }
        byte_num
    }