TSTrajectoryGetUpdatedHistoryVecs

Get updated state and time-derivative history vectors.

Synopsis

#include "petscts.h"  
PetscErrorCode TSTrajectoryGetUpdatedHistoryVecs(TSTrajectory tj, TS ts, PetscReal time, Vec *U, Vec *Udot)

Collective

Input Parameters

• tj - the TSTrajectory context

• ts - the TS solver context

• time - the requested time

Output Parameters

• U - state vector at given time (can be interpolated)

• Udot - time-derivative vector at given time (can be interpolated)

Notes

The vectors are interpolated if time does not match any time step stored in the TSTrajectory(). Pass NULL to not request a vector.

This function differs from TSTrajectoryGetVecs() since the vectors obtained cannot be modified, and they need to be returned by calling TSTrajectoryRestoreUpdatedHistoryVecs().

See Also

TS: Scalable ODE and DAE Solvers, TSTrajectory, TSSetSaveTrajectory(), TSTrajectoryCreate(), TSTrajectoryDestroy(), TSTrajectoryRestoreUpdatedHistoryVecs(), TSTrajectoryGetVecs()

Level

developer

Location

src/ts/trajectory/interface/traj.c

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