TSAdaptChoose#

choose which method and step size to use for the next step

Synopsis#

#include "petscts.h" 
PetscErrorCode TSAdaptChoose(TSAdapt adapt, TS ts, PetscReal h, PetscInt *next_sc, PetscReal *next_h, PetscBool *accept)

Collective

Input Parameters#

  • adapt - adaptive controller

  • ts - time stepper

  • h - current step size

Output Parameters#

  • next_sc - optional, scheme to use for the next step

  • next_h - step size to use for the next step

  • accept - PETSC_TRUE to accept the current step, PETSC_FALSE to repeat the current step with the new step size

Note#

The input value of parameter accept is retained from the last time step, so it will be PETSC_FALSE if the step is being retried after an initial rejection.

See Also#

TS: Scalable ODE and DAE Solvers, TSAdapt, TSAdaptCandidatesClear(), TSAdaptCandidateAdd()

Level#

developer

Location#

src/ts/adapt/interface/tsadapt.c

Implementations#

TSAdaptChoose_Basic() in src/ts/adapt/impls/basic/adaptbasic.c
TSAdaptChoose_CFL() in src/ts/adapt/impls/cfl/adaptcfl.c
TSAdaptChoose_DSP() in src/ts/adapt/impls/dsp/adaptdsp.c
TSAdaptChoose_GLEE() in src/ts/adapt/impls/glee/adaptglee.c
TSAdaptChoose_History() in src/ts/adapt/impls/history/adapthist.c
TSAdaptChoose_None() in src/ts/adapt/impls/none/adaptnone.c

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