petsc-3.4.5 2014-06-29

TSPseudoSetVerifyTimeStep

Sets a user-defined routine to verify the quality of the last timestep.

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

Logically Collective on TS

	ts	- timestep context
	dt	- user-defined function to verify timestep
	ctx	- [optional] user-defined context for private data for the timestep verification routine (may be NULL)

func (TS ts,Vec update,void *ctx,PetscReal *newdt,PetscBool *flag); -

update -latest solution vector

ctx -[optional] timestep context

newdt -the timestep to use for the next step

flag -flag indicating whether the last time step was acceptable

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

timestep, pseudo, set, verify