petsc-3.4.5 2014-06-29
DMKSPSetComputeOperators
set KSP matrix evaluation function
Synopsis
#include "petscksp.h"
PetscErrorCode DMKSPSetComputeOperators(DM dm,PetscErrorCode (*func)(KSP,Mat,Mat,MatStructure*,void*),void *ctx)
Not Collective
Input Argument
| dm | - DM to be used with KSP
|
| func | - matrix evaluation function, see KSPSetComputeOperators() for calling sequence
|
| ctx | - context for matrix evaluation
|
Note
KSPSetComputeOperators() 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. If DM took a more central role at some later date, this could become the primary method of setting the matrix.
See Also
DMKSPSetContext(), DMKSPGetComputeOperators(), KSPSetOperators()
Level:advanced
Location:src/ksp/ksp/interface/dmksp.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages