DMSNESGetJacobianLocal

the local Jacobian evaluation function set with DMSNESSetJacobianLocal().

Synopsis

#include "petscsnes.h" 
PetscErrorCode DMSNESGetJacobianLocal(DM dm, PetscErrorCode (**func)(DM dm, Vec X, Mat J, Mat Jp, PetscCtx ctx), PetscCtxRt ctx)

Logically Collective

Input Parameter

• dm - DM with the associated callback

Output Parameters

• func - local Jacobian evaluation

• ctx - context for local Jacobian evaluation

Calling sequence of func

• dm - the DM context

• X - current solution vector (ghosted or not?)

• J - the Jacobian

• Jp - approximate Jacobian used to compute the preconditioner, often J

• ctx - a user provided context

See Also

SNES: Nonlinear Solvers, DMSNESSetJacobianLocal(), DMSNESSetJacobian()

Level

beginner

Location

src/snes/utils/dmlocalsnes.c

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