TaoLineSearchComputeObjectiveAndGTS#

Computes the objective function value and inner product of gradient and step direction at a given point

Synopsis#

#include "petsctaolinesearch.h" 
PetscErrorCode TaoLineSearchComputeObjectiveAndGTS(TaoLineSearch ls, Vec x, PetscReal *f, PetscReal *gts)

Collective

Input Parameters#

  • ls - the TaoLineSearch context

  • x - input vector

Output Parameters#

  • f - Objective value at X

  • gts - inner product of gradient and step direction at X

Notes#

TaoLineSearchComputeObjectiveAndGTS() is typically used within line searches so most users would not generally call this routine themselves.

See Also#

TaoLineSearchComputeGradient(), TaoLineSearchComputeObjectiveAndGradient(), TaoLineSearchSetObjectiveRoutine()

Level#

developer

Location#

src/tao/linesearch/interface/taolinesearch.c


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Index of all TaoLineSearch routines
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