petsc-3.14.5 2021-03-03
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# PCFieldSplitRestrictIS

Restricts the fieldsplit ISs to be within a given IS.

### Synopsis

    #include "petscpc.h"
    PetscErrorCode  PCFieldSplitRestrictIS(PC pc,IS isy)

### Input Parameters

| pc | - the preconditioner context
| is | - the index set that defines the indices to which the fieldsplit is to be restricted

### Level

advanced

### Location

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

### Implementations

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