PCFieldSplitGetSchurPre#
For Schur complement fieldsplit, determine how the Schur complement will be preconditioned. See PCFieldSplitSetSchurPre() for details.
Synopsis#
#include "petscpc.h"
PetscErrorCode PCFieldSplitGetSchurPre(PC pc, PCFieldSplitSchurPreType *ptype, Mat *pre)
Logically Collective
Input Parameter#
pc - the preconditioner context
Output Parameters#
ptype - which matrix to use for preconditioning the Schur complement:
PC_FIELDSPLIT_SCHUR_PRE_A11,PC_FIELDSPLIT_SCHUR_PRE_SELF,PC_FIELDSPLIT_PRE_USERpre - matrix to use for preconditioning (with
PC_FIELDSPLIT_PRE_USER), or NULL
See Also#
Solving Block Matrices, PC, PCFieldSplitSetSchurPre(), PCFieldSplitGetSubKSP(), PCFIELDSPLIT, PCFieldSplitSetFields(), PCFieldSplitSchurPreType, PCLSC,
PCFieldSplitSchurPreType
Level#
intermediate
Location#
Implementations#
PCFieldSplitGetSchurPre_FieldSplit in src/ksp/pc/impls/fieldsplit/fieldsplit.c
Index of all PC routines
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