DMDASNESSetFunctionLocal

set a local residual evaluation function for use with DMDA

Synopsis

#include "petscdmda.h" 
#include "petscsnes.h" 
PetscErrorCode DMDASNESSetFunctionLocal(DM dm, InsertMode imode, PetscErrorCode (*func)(DMDALocalInfo *info, void *x, void *f, void *ctx), 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

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

• x - dimensional pointer to state at which to evaluate residual (e.g. PetscScalar *x or **x or ***x)

• f - dimensional pointer to residual, write the residual here (e.g. PetscScalar *f or **f or ***f)

• ctx - optional context passed above

See Also

SNES: Nonlinear Solvers, DMDA, DMDASNESSetJacobianLocal(), DMSNESSetFunction(), DMDACreate1d(), DMDACreate2d(), DMDACreate3d()

Level

beginner

Location

src/snes/utils/dmdasnes.c

Examples

src/snes/tutorials/ex25.c
src/snes/tutorials/ex55.c
src/snes/tutorials/ex33.c
src/snes/tutorials/ex15.c
src/snes/tutorials/ex46.c
src/snes/tutorials/ex9.c
src/snes/tutorials/ex16.c
src/snes/tutorials/ex40f90.F90
src/snes/tutorials/ex5.c
src/snes/tutorials/ex48.c

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