class ROOT::Math::GradFunctor1D: public ROOT::Math::IGradientFunctionOneDim
Documentation for class Functor class. It is used to wrap in a very simple and convenient way multi-dimensional function objects. It can wrap all the following types: <ul> <li> any C++ callable object implemention double operator()( const double * ) <li> a free C function of type double ()(double * ) <li> a member function with the correct signature like Foo::Eval(const double * ). In this case one pass the object pointer and a pointer to the member function (&Foo::Eval) </ul> The function dimension is required when constructing the functor. @ingroup GenFunc
Function Members (Methods)
public:
private:
| virtual double | DoDerivative(double x) const |
| virtual double | DoEval(double x) const |
Data Members
private:
| auto_ptr<ROOT::Math::IGradientFunctionOneDim> | fImpl | pointer to base gradient functor handler |
Class Charts
Function documentation
double DoEval(double x) const
double DoDerivative(double x) const
GradFunctor1D(const ROOT::Math::GradFunctor1D& )
construct from an object with the right signature
implementing both operator() (double x) and Derivative(double x)
{} GradFunctor1D(const PtrObj& p, MemFn memFn, GradMemFn gradFn)
construct from a pointer to class and two pointers to member functions, one for
the function evaluation and the other for the derivative.
The member functions must take a double as argument and return a double
{}