TSSetRHSFunction

Sets the routine for evaluating the function, where U_t = G(t,u).

Synopsis

#include "petscts.h"  
PetscErrorCode TSSetRHSFunction(TS ts, Vec r, TSRHSFunctionFn *f, void *ctx)

Logically Collective

Input Parameters

• ts - the TS context obtained from TSCreate()

• r - vector to put the computed right-hand side (or NULL to have it created)

• f - routine for evaluating the right-hand-side function

• ctx - [optional] user-defined context for private data for the function evaluation routine (may be NULL)

Note

You must call this function or TSSetIFunction() to define your ODE. You cannot use this function when solving a DAE.

See Also

TS: Scalable ODE and DAE Solvers, TS, TSRHSFunctionFn, TSSetRHSJacobian(), TSSetIJacobian(), TSSetIFunction()

Level

beginner

Location

src/ts/interface/ts.c

Examples

src/ts/tutorials/ex52.c
src/tao/unconstrained/tutorials/burgers_spectral.c
src/ts/tutorials/extchem.c
src/ts/utils/dmplexlandau/tutorials/ex1.c
src/ts/utils/dmplexlandau/tutorials/ex2.c
src/ts/tutorials/ex22.c
src/ts/tutorials/ex5.c
src/ts/tutorials/ex74.c
src/ts/tutorials/ex50.c
src/tao/unconstrained/tutorials/spectraladjointassimilation.c

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