petsc-3.9.4 2018-09-11

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

Level

beginner

Location

src/tao/interface/taosolver_fg.c

Examples

TaoSetObjectiveAndGradientRoutine

Synopsis

Input Parameter

Calling sequence of func

See Also

Level

Location

Examples