petsc-3.7.1 2016-05-15
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TSGetIJacobian

Returns the implicit Jacobian at the present timestep.

Synopsis

#include "petscts.h"  
PetscErrorCode  TSGetIJacobian(TS ts,Mat *Amat,Mat *Pmat,TSIJacobian *f,void **ctx)
Not Collective, but parallel objects are returned if TS is parallel Many br

Input Parameter

ts -The TS context obtained from TSCreate() Many br

Output Parameters

Amat - The (approximate) Jacobian of F(t,U,U_t) Many br
Pmat - The matrix from which the preconditioner is constructed, often the same as Amat Many br
f - The function to compute the matrices Many br
ctx - User-defined context for Jacobian evaluation routine Many br

Notes: You can pass in NULL for any return argument you do not need. Many br

Many br

See Also

TSGetTimeStep(), TSGetRHSJacobian(), TSGetMatrices(), TSGetTime(), TSGetTimeStepNumber()

Keywords

TS, timestep, get, matrix, Jacobian

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