GradFunctor class for Multidimensional gradient functions.
It is used to wrap in a very C++ callable object to make gradient functions. It can be constructed in three different way:
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from an object implementing both double operator()( const double * ) for the function evaluation and double Derivative(const double *, int icoord) for the partial derivatives
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from an object implementing any member function like Foo::XXX(const double *) for the function evaluation and any member function like Foo::XXX(const double *, int icoord) for the partial derivatives
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from an function object implementing double operator()( const double * ) for the function evaluation and another function object implementing double operator() (const double *, int icoord) for the partial derivatives
The function dimension is required when constructing the functor.
Definition at line 585 of file Functor.h.
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| GradFunctor () |
| Default constructor.
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template<typename Func , typename GradFunc > |
| GradFunctor (const Func &f, const GradFunc &g, int dim) |
| construct for Gradient Functions of multi-dimension Func gives the function evaluatiion, GradFunc the partial derivatives The function dimension is required
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template<typename Func > |
| GradFunctor (const Func &f, unsigned int dim) |
| construct from a callable object of multi-dimension implementing operator()(const double *x) and Derivative(const double * x,icoord)
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| GradFunctor (const GradFunctor &rhs) |
| Copy constructor for functor based on ROOT::Math::IMultiGradFunction.
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template<class PtrObj , typename MemFn , typename GradMemFn > |
| GradFunctor (const PtrObj &p, MemFn memFn, GradMemFn gradFn, unsigned int dim) |
| construct from a pointer to member function and member function types for function and derivative evaluations
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virtual | ~GradFunctor () |
| Destructor (no operations)
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ImplBase * | Clone () const |
| Clone a function.
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unsigned int | NDim () const |
| Retrieve the dimension of the function.
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GradFunctor & | operator= (const GradFunctor &rhs) |
| Assignment operator.
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virtual | ~IGradientFunctionMultiDimTempl () |
| Virtual Destructor (no operations)
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virtual void | FdF (const T *x, T &f, T *df) const |
| Optimized method to evaluate at the same time the function value and derivative at a point x.
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virtual void | Gradient (const T *x, T *grad) const |
| Evaluate all the vector of function derivatives (gradient) at a point x.
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virtual unsigned int | NDim () const=0 |
| Retrieve the dimension of the function.
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| IBaseFunctionMultiDimTempl () |
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virtual | ~IBaseFunctionMultiDimTempl () |
| virtual destructor
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T | operator() (const T *x) const |
| Evaluate the function at a point x[].
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virtual | ~IGradientMultiDimTempl () |
| virual destructor
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T | Derivative (const T *x, unsigned int icoord=0) const |
| Return the partial derivative with respect to the passed coordinate.
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