petsc-main 2021-04-20
Report Typos and Errors


Get updated state and time-derivative history vectors.


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

Input Parameter

tj - the TS trajectory context
ts - the TS solver context
time - the requested time

Output Parameter

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

TSSetSaveTrajectory(), TSTrajectoryCreate(), TSTrajectoryDestroy(), TSTrajectoryRestoreUpdatedHistoryVecs(), TSTrajectoryGetVecs()




Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages