Mul.h

#ifndef Mul_h
#define Mul_h
#include "Function.h"
 
namespace cart
{
    template <class T>
    class Mul : public Function
    {
    public:
        Mul();
        Mul(uint numArgs);
        ~Mul();
 
        void evaluate(voidP inputs, void* result);
    };
 
    typedef Mul<double> MulDouble;
    typedef Mul<int> MulInt;
 
    template <class T>
    Mul<T>::Mul()
    {
        name_ = "*";
        numOfArgs_ = 2;
    }
 
    template <class T>
    Mul<T>::Mul(uint numArgs)
    {
        name_ = "*";
        numOfArgs_ = numArgs;
    }
 
    template <class T>
    Mul<T>::~Mul()
    {
    }
 
    template <class T>
    void Mul<T>::evaluate(voidP inputs, void* result)
    {
        T& prod = *(T*) result;
        prod = 0;
        stringstream ss;
        ss << *((string*) inputs.get());
        vector<T> readInputs;
        T input;
        uint i = 0;
        while (ss >> input)
        {
            readInputs.push_back(input);
            ++i;
            if (i == numOfArgs_)
            {
                break;
            }
        }
 
        prod = readInputs.at(0);
        for (int i = 1; i < (int)numOfArgs_; i++)
        {
            prod *= readInputs.at(i);
        }
    }
 
}
 
#endif /* Mul_h */