TSSetEventTolerances#

Set tolerances for event zero crossings

Synopsis#

#include "petscts.h" 
PetscErrorCode TSSetEventTolerances(TS ts, PetscReal tol, PetscReal vtol[])

Logically Collective

Input Parameters#

  • ts - time integration context

  • tol - scalar tolerance, PETSC_DECIDE to leave current value

  • vtol - array of tolerances or NULL, used in preference to tol if present

Options Database Key#

  • -ts_event_tol - tolerance for event zero crossing

Notes#

Must call TSSetEventHandler() before setting the tolerances.

The size of vtol is equal to the number of events.

The tolerance is some measure of how close the event function is to zero for the event detector to stop and declare the time of the event has been detected.

See Also#

TS: Scalable ODE and DAE Solvers, TS, TSEvent, TSSetEventHandler()

Level#

beginner

Location#

src/ts/event/tsevent.c

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