TaoBRGNSetRegularizerObjectiveAndGradientRoutine#

Sets the user-defined regularizer call-back function into the algorithm.

Synopsis#

#include "petsctao.h" 
PetscErrorCode TaoBRGNSetRegularizerObjectiveAndGradientRoutine(Tao tao, PetscErrorCode (*func)(Tao, Vec, PetscReal *, Vec, void *), void *ctx)

Input Parameters#

  • tao - the Tao context

  • func - function pointer for the regularizer value and gradient evaluation

  • ctx - user context for the regularizer

Calling Sequence of func#

PetscErrorCode func(Tao tao, Vec u, PetscReal val, Vec g, void *ctx)

  • tao - the Tao context

  • u - the location at which to compute the objective and gradient

  • val - location to store objective function value

  • g - location to store gradient

  • ctx - user context for the regularizer Hessian

See Also#

Tao, Mat, TAOBRGN

Level#

advanced

Location#

src/tao/leastsquares/impls/brgn/brgn.c

Examples#

src/tao/leastsquares/tutorials/tomography.c

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