TSGetIFunction — PETSc 3.21.4 documentation

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# TSGetIFunction

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

## Synopsis

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

Not Collective

## Input Parameter

- ts - the `TS` context

## Output Parameters

- r - vector to hold residual (or `NULL`)

- func - the function to compute residual (or `NULL`)

- ctx - the function context (or `NULL`)

## See Also

TS: Scalable ODE and DAE Solvers, `TS`, `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