PETSc version 3.15.5
TaoSetObjectiveAndGradientRoutine
Sets a combined objective function and gradient evaluation routine for minimization 
Synopsis
#include "petsctao.h" 
PetscErrorCode TaoSetObjectiveAndGradientRoutine(Tao tao, PetscErrorCode (*func)(Tao, Vec, PetscReal *, Vec, void*), void *ctx)
Logically collective on Tao
Input Parameter
|  | tao | - the Tao context | 
|  | func | - the gradient function | 
|  | ctx | - [optional] user-defined context for private data for the gradient evaluation
routine (may be NULL) | 
Calling sequence of func
     func (Tao tao, Vec x, PetscReal *f, Vec g, void *ctx);
|  | x | - input vector | 
|  | f | - objective value (output) | 
|  | g | - gradient value (output) | 
|  | ctx | - [optional] user-defined function context | 
See Also
 TaoSetObjectiveRoutine(), TaoSetHessianRoutine() TaoSetObjectiveAndGradientRoutine()
Level
beginner
Location
src/tao/interface/taosolver_fg.c
Examples
src/ts/tutorials/ex20opt_p.c.html
src/ts/tutorials/ex20opt_ic.c.html
src/tao/unconstrained/tutorials/eptorsion1.c.html
src/tao/unconstrained/tutorials/eptorsion2.c.html
src/tao/unconstrained/tutorials/minsurf2.c.html
src/tao/unconstrained/tutorials/rosenbrock1.c.html
src/tao/unconstrained/tutorials/rosenbrock2.c.html
src/tao/unconstrained/tutorials/rosenbrock3.c.html
src/tao/unconstrained/tutorials/spectraladjointassimilation.c.html
src/tao/unconstrained/tutorials/eptorsion2f.F.html
src/tao/unconstrained/tutorials/rosenbrock1f.F90.html
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages