PCFieldSplitGetSchurBlocks#

Gets all matrix blocks for the Schur complement

Synopsis#

#include "petscpc.h" 
PetscErrorCode PCFieldSplitGetSchurBlocks(PC pc, Mat *A00, Mat *A01, Mat *A10, Mat *A11)

Collective

Input Parameter#

pc - the preconditioner context

Output Parameters#

A00 - the (0,0) block
A01 - the (0,1) block
A10 - the (1,0) block
A11 - the (1,1) block

Note#

Use NULL for any unneeded output arguments

See Also#

Solving Block Matrices with PCFIELDSPLIT, PC, PCFIELDSPLIT, MatSchurComplementGetSubMatrices(), MatSchurComplementSetSubMatrices()

Level#

advanced

Location#

src/ksp/pc/impls/fieldsplit/fieldsplit.c

Index of all PC routines
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Index of all manual pages