DMDASNESSetFunctionLocalVec#

set a local residual evaluation function that operates on a local vector for DMDA

Synopsis#

#include "petscdmda.h" 
#include "petscsnes.h" 
PetscErrorCode DMDASNESSetFunctionLocalVec(DM dm, InsertMode imode, PetscErrorCode (*func)(DMDALocalInfo *, Vec, Vec, void *), void *ctx)

Logically Collective

Input Parameters#

  • dm - DM to associate callback with

  • imode - INSERT_VALUES if local function computes owned part, ADD_VALUES if it contributes to ghosted part

  • func - local residual evaluation

  • ctx - optional context for local residual evaluation

Calling sequence of func#

PetscErrorCode func(DMDALocalInfo *info, Vec x, Vec f, void *ctx),

  • info - DMDALocalInfo defining the subdomain to evaluate the residual on

  • x - state vector at which to evaluate residual

  • f - residual vector

  • ctx - optional context passed above

See Also#

DMDA, DMDASNESSetFunctionLocal(), DMDASNESSetJacobianLocalVec(), DMSNESSetFunction(), DMDACreate1d(), DMDACreate2d(), DMDACreate3d()

Level#

beginner

Location#

src/snes/utils/dmdasnes.c

Examples#

src/snes/tutorials/ex55.c

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