petsc-3.14.5 2021-03-03
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# TSSetPostEvaluate

Sets the general-purpose function called once at the end of each step evaluation.

### Synopsis

    #include "petscts.h"
    PetscErrorCode  TSSetPostEvaluate(TS ts, PetscErrorCode (*func)(TS))

Logically Collective on TS

### Input Parameters

| ts | - The TS context obtained from TSCreate()
| func | - The function

### Calling sequence of func

| PetscErrorCode func(TS ts);

### Note

Semantically, TSSetPostEvaluate() differs from TSSetPostStep() since the function it sets is called before event-handling thus guaranteeing the same solution (computed by the time-stepper) will be passed to it. On the other hand, TSPostStep() may be passed a different solution, possibly changed by the event handler. TSPostEvaluate() is called after the next step solution is evaluated allowing to modify it, if need be. The solution can be obtained with TSGetSolution(), the time step with TSGetTimeStep(), and the time at the start of the step is available via TSGetTime()

### See Also

TSSetPreStage(), TSSetPreStep(), TSSetPostStep(), TSGetApplicationContext()

### Level

intermediate

### Location

src/ts/interface/ts.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages