PCFieldSplitSetType — PETSc 3.21.4 documentation

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# PCFieldSplitSetType

Sets the type, `PCCompositeType`, of a `PCFIELDSPLIT`

## Synopsis

    #include "petscpc.h"
    PetscErrorCode PCFieldSplitSetType(PC pc, PCCompositeType type)

Collective

## Input Parameters

- pc - the preconditioner context

- type - `PC_COMPOSITE_ADDITIVE`, `PC_COMPOSITE_MULTIPLICATIVE` (default), `PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE`, `PC_COMPOSITE_SPECIAL`, `PC_COMPOSITE_SCHUR`, `PC_COMPOSITE_GKB`

## Options Database Key

- -pc_fieldsplit_type <one of multiplicative, additive, symmetric_multiplicative, special, schur> - Sets fieldsplit preconditioner type

## See Also

Solving Block Matrices with PCFIELDSPLIT, `PC`, `PCFIELDSPLIT`, `PCCompositeType`, `PCCompositeGetType()`, `PC_COMPOSITE_ADDITIVE`, `PC_COMPOSITE_MULTIPLICATIVE`, `PC_COMPOSITE_SYMMETRIC_MULTIPLICATIVE`, `PC_COMPOSITE_SPECIAL`, `PC_COMPOSITE_SCHUR`, `PCFieldSplitSetSchurFactType()`

## Level

intermediate

## Location

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

## Examples

src/ksp/ksp/tutorials/ex87.c
src/dm/impls/stag/tutorials/ex4.c

## Implementations

PCFieldSplitSetType_FieldSplit() in src/ksp/pc/impls/fieldsplit/fieldsplit.c

Index of all PC routines
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Index of all manual pages