PETSc version 3.15.5
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