petsc-3.11.4 2019-09-28

TaoIsObjectiveAndGradientDefined

Checks to see if the user has declared a joint objective/gradient routine. Useful for determining when it is appropriate to call TaoComputeObjective() or TaoComputeObjectiveAndGradient()

#include "petsctao.h" 
PetscErrorCode TaoIsObjectiveAndGradientDefined(Tao tao, PetscBool *flg)

Not Collective

	tao	- the Tao context
	ctx	- PETSC_TRUE if objective/gradient routine is set by user, PETSC_FALSE otherwise

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