petsc-3.14.5 2021-03-03
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# TSGetIFunction

Returns the vector where the implicit residual is stored and the function/contex to compute it.

### Synopsis

    #include "petscts.h"
    PetscErrorCode TSGetIFunction(TS ts,Vec *r,TSIFunction *func,void **ctx)

Not Collective

### Input Parameter

| ts | - the TS context

### Output Parameter

| r | - vector to hold residual (or NULL)
| func | - the function to compute residual (or NULL)
| ctx | - the function context (or NULL)

### See Also

TSSetIFunction(), SNESGetFunction()

### Level

advanced

### Location

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