Neg.h

#ifndef Neg_h
#define Neg_h
#include "Primitive.h"
 
namespace Tree {
namespace Primitives {
 
template <class T>
class NegT : public Primitive
{
public:
    NegT();
    void execute(void* result, Tree& tree);
    ~NegT();
};
typedef NegT<double> Neg;
 
 
template <class T>
NegT<T>::NegT()
{
    nArguments_ = 1;
    name_ = "neg";
    complementName_ = "pos";
}
 
 
template <class T>
NegT<T>::~NegT()
{   }
 
 
template <class T>
void NegT<T>::execute(void* result, Tree& tree)
{
    T arg;
    T& neg = *(T*)result;
    getNextArgument(&arg, tree);
    neg = arg < 0 ? arg : 0;
}
 
}
}
 
#endif