TaoGetGradient#
Gets the gradient evaluation routine for the function being optimized
Synopsis#
#include "petsctao.h" 
PetscErrorCode TaoGetGradient(Tao tao, Vec *g, PetscErrorCode (**func)(Tao tao, Vec x, Vec g, void *ctx), void **ctx)
Not Collective
Input Parameter#
- tao - the - Taocontext
Output Parameters#
- g - the vector to internally hold the gradient computation 
- func - the gradient function 
- ctx - user-defined context for private data for the gradient evaluation routine 
Calling sequence of func#
- tao - the optimizer 
- x - input vector 
- g - gradient value (output) 
- ctx - [optional] user-defined function context 
See Also#
TAO: Optimization Solvers, Tao, TaoSetObjective(), TaoSetHessian(), TaoSetObjectiveAndGradient(), TaoSetGradient()
Level#
beginner
Location#
Examples#
src/tao/unconstrained/tutorials/spectraladjointassimilation.c
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages