TSPseudoSetTimeStep#

Sets the user-defined routine to be called at each pseudo-timestep to update the timestep.

Synopsis#

#include "petscts.h"   
PetscErrorCode TSPseudoSetTimeStep(TS ts, PetscErrorCode (*dt)(TS, PetscReal *, void *), void *ctx)

Logically Collective

Input Parameters#

  • ts - timestep context

  • dt - function to compute timestep

  • ctx - [optional] user-defined context for private data required by the function (may be NULL)

Calling sequence of dt#

PetscErrorCode dt(TS ts, PetscReal *newdt, void *ctx);

  • newdt - the newly computed timestep

  • ctx - [optional] timestep context

Notes#

The routine set here will be called by TSPseudoComputeTimeStep() during the timestepping process.

If not set then TSPseudoTimeStepDefault() is automatically used

See Also#

TS: Scalable ODE and DAE Solvers, TSPSEUDO, TSPseudoTimeStepDefault(), TSPseudoComputeTimeStep()

Level#

intermediate

Location#

src/ts/impls/pseudo/posindep.c

Examples#

src/ts/tutorials/ex1.c

Implementations#

TSPseudoSetTimeStep_Pseudo in src/ts/impls/pseudo/posindep.c

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