DMSNESSetJacobian#

set SNES Jacobian evaluation function

Synopsis#

#include "petscsnes.h" 
#include "petscdm.h" 
PetscErrorCode DMSNESSetJacobian(DM dm, PetscErrorCode (*J)(SNES, Vec, Mat, Mat, void *), void *ctx)

Not Collective

Input Parameters#

  • dm - DM to be used with SNES

  • J - Jacobian evaluation function

  • ctx - context for residual evaluation

Note#

SNESSetJacobian() is normally used, but it calls this function internally because the user context is actually associated with the DM.

Developer Note#

This makes the interface consistent regardless of whether the user interacts with a DM or not. If DM took a more central role at some later date, this could become the primary method of setting the Jacobian.

See Also#

DMSNESSetContext(), SNESSetFunction(), DMSNESGetJacobian(), SNESSetJacobian(), SNESJacobianFunction

Level#

advanced

Location#

src/snes/utils/dmsnes.c

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Index of all SNES routines
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Index of all manual pages