Not.h

#ifndef Not_h
#define Not_h
#include "Function.h"
 
namespace cart
{
    template <class T>
    class Not : public Function
    {
    public:
        Not();
        ~Not();
 
        void evaluate(voidP inputs, void* result);
    };
 
    typedef Not<uint> NotUint;
 
    template <class T>
    Not<T>::Not()
    {
        name_ = "NOT";
        numOfArgs_ = 1;
    }
 
    template <class T>
    Not<T>::~Not()
    {
    }
 
    template <class T>
    void Not<T>::evaluate(voidP inputs, void* result)
    {
        T& neg = *(T*) result;
        stringstream ss;
        ss << *((string*) inputs.get());
        vector<T> readInputs;
        T input, maxSize = 0;
        uint i = 0;
        //received inputs are in format: input1 sizeOfInput1 input2 sizeOfInput2 ...
        while (ss >> input)
        {
            readInputs.push_back(input);
            ss >> input;
            if (input > maxSize)
            {
                maxSize = input;
            }
            i += 2;
            if (i == 2 * numOfArgs_)
            {
                break;
            }
        }
        T mask = (T)pow(2.0, maxSize + 1.0) - 1;
 
        neg = ~((T)readInputs.at(0));
        //masking is important in NOT operation because instead of leading 0's there would be 
        //leading 1's as most significant bits
        neg &= mask;
    }
 
}
 
#endif /* Not_h */