DMDATSSetIFunctionLocal#

set a local residual evaluation function for use with DMDA

Synopsis#

#include "petscdmda.h" 
#include "petscts.h" 
PetscErrorCode DMDATSSetIFunctionLocal(DM dm, InsertMode imode, DMDATSIFunctionLocal func, void *ctx)

Logically Collective

Input Parameters#

  • dm - DM to associate callback with

  • func - local residual evaluation

  • ctx - optional context for local residual evaluation

Calling sequence of func#

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

  • info - defines the subdomain to evaluate the residual on

  • t - time at which to evaluate residual

  • x - array of local state information

  • xdot - array of local time derivative information

  • f - output array of local function evaluation information

  • ctx - optional context passed above

See Also#

TS: Scalable ODE and DAE Solvers, DMDA, DMTSSetIFunction(), DMDATSSetIJacobianLocal(), DMDASNESSetFunctionLocal()

Level#

beginner

Location#

src/ts/utils/dmdats.c

Examples#

src/ts/tutorials/ex26.c
src/ts/tutorials/ex29.c

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