petsc-3.9.4 2018-09-11
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 on Tao
Input Parameters
| ls | - the TaoLineSearch context
|
| x | - input vector
|
Output Parameter
| 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
Index of all TaoLineSearch routines
Table of Contents for all manual pages
Index of all manual pages