TSIJacobianFn

A prototype of a TS Jacobian evaluation function that would be passed to TSSetIJacobian()

Synopsis

#include <petscts.h> 
PETSC_EXTERN_TYPEDEF typedef PetscErrorCode(TSIJacobianFn)(TS ts, PetscReal t, Vec U, Vec U_t, PetscReal a, Mat Amat, Mat Pmat, void *ctx);

Calling Sequence

• ts - the TS context obtained from TSCreate()

• t - time at step/stage being solved

• U - state vector

• U_t - time derivative of state vector

• a - shift

• Amat - (approximate) Jacobian of F(t,U,W+aU), equivalent to dF/dU + adF/dU_t

• Pmat - matrix used for constructing preconditioner, usually the same as Amat

• ctx - [optional] user-defined context for Jacobian evaluation routine

Note

The deprecated TSIJacobian still works as a replacement for TSIJacobianFn *.

See Also

TS: Scalable ODE and DAE Solvers, TSSetIJacobian(), DMTSSetIJacobian(), TSIFunctionFn, TSRHSFunctionFn, TSRHSJacobianFn

Level

beginner

Location

include/petscts.h

Examples

src/ts/tutorials/ex8.c

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Index of all manual pages