a C++ bitset class which allows set bit-number during run time. As know, the standard C++ doesn't support init a bitset class during runtime using a runtime result.

1. set(const int bitpos) - set the given bitpos to 1, if the parameter is -1, set all bit to 1

2. reset(const int bitpos, const bool value) - set the given bitpos to the given value (0 or 1)

3. test(const int bitpos) - try to get the bit value, true for 1, and false for 0

4. operator(const int bitpos) - the same as the function test(..)

5. print() - output the bitset, the output format is controlled by function set_output_format(...)

6. set_output_format(const int cluster_bit_size) - set output format

7. operator[] - set to true or set to false

please contact [email protected] or xgzhang at seu.edu.cn if you have any question to use the class.

int main()
{
   bitset_ex bs(7);
    bs.set();
    bs.set_output_format(4);
    bs.print();

    bs.set(3);
    bs.reset(2);
    bs.reset(4);
    bs.print();

    bs[2] = true;
    bs[3] = false;
    bs.print();

    if(bs.test(2))
        cout<<"good"<<endl;
    else
        cout<<"bad"<<endl;
}