DMSNESSetFunction#

set SNES residual evaluation function

Synopsis#

#include "petscsnes.h" 
#include "petscdm.h" 
PetscErrorCode DMSNESSetFunction(DM dm, PetscErrorCode (*f)(SNES, Vec, Vec, void *), void *ctx)

Not Collective

Input Parameters#

  • dm - DM to be used with SNES

  • f - residual evaluation function; see SNESFunction for details

  • ctx - context for residual evaluation

Note#

SNESSetFunction() is normally used, but it calls this function internally because the user context is actually associated with the DM. This makes the interface consistent regardless of whether the user interacts with a DM or not.

Developer Note#

If DM took a more central role at some later date, this could become the primary method of setting the residual.

See Also#

DMSNESSetContext(), SNESSetFunction(), DMSNESSetJacobian(), SNESFunction

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