petsc-3.3-p7 2013-05-11

SNESGetJacobian

 Returns the Jacobian matrix and optionally the user provided context for evaluating the Jacobian.

Synopsis

#include "petscsnes.h"  
#include "petscdmshell.h" 
#include "petscsys.h" 
PetscErrorCode SNESGetJacobian(SNES snes,Mat *A,Mat *B,PetscErrorCode (**func)(SNES,Vec,Mat*,Mat*,MatStructure*,void*),void **ctx)
Not Collective, but Mat object will be parallel if SNES object is

Input Parameter

snes -the nonlinear solver context

Output Parameters

A - location to stash Jacobian matrix (or PETSC_NULL)
B - location to stash preconditioner matrix (or PETSC_NULL)
func - location to put Jacobian function (or PETSC_NULL)
ctx - location to stash Jacobian ctx (or PETSC_NULL)

See Also

SNESSetJacobian(), SNESComputeJacobian()

Level:advanced
Location:src/snes/interface/snes.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages