class ROOT::Math::Functor: public ROOT::Math::IBaseFunctionMultiDim

   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