#include <ConstrainedOptPack_MeritFuncNLPDirecDeriv.hpp>
Inheritance diagram for ConstrainedOptPack::MeritFuncNLPDirecDeriv:
To be overridden by subclasses  
virtual value_type  calc_deriv (const Vector &Gf_k, const Vector *c_k, const Vector *h_k, const Vector *hl, const Vector *hu, const Vector &d_k)=0 
Calculate d(phi(x_k + alpha_k*d_k))/d(alpha_k) at alpha_k = 0.  
Public Member Functions  
virtual  ~MeritFuncNLPDirecDeriv () 

The quantities Gf(xo) (gradient of f(xo)) c(xo), h(xo) and d are used by several types of merit functions to calculate the derivative of:
d(phi(x_k + alpha_k*d_k))/d(alpha_k) at alpha_k = 0.
It is generally assumed that d satisfies Gc_k'*d_k + c_k = 0 otherwise the merit function would need Gc_k to compute this directional derivative properly.
Definition at line 48 of file ConstrainedOptPack_MeritFuncNLPDirecDeriv.hpp.
virtual ConstrainedOptPack::MeritFuncNLPDirecDeriv::~MeritFuncNLPDirecDeriv  (  )  [inline, virtual] 
virtual value_type ConstrainedOptPack::MeritFuncNLPDirecDeriv::calc_deriv  (  const Vector &  Gf_k,  
const Vector *  c_k,  
const Vector *  h_k,  
const Vector *  hl,  
const Vector *  hu,  
const Vector &  d_k  
)  [pure virtual] 
Calculate d(phi(x_k + alpha_k*d_k))/d(alpha_k) at alpha_k = 0.
The value is stored internally by the subclass are returned by its deriv() member usually. The value is also returned from this function.
If the sizes of the vectors input do not aggree then std::length_error# exception will be thrown.
Implemented in ConstrainedOptPack::MeritFuncNLPL1, and ConstrainedOptPack::MeritFuncNLPModL1.