PETSc version 3.17.0
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# PetscCommRestoreComm

restores an MPI communicator that was obtained with PetscCommGetComm()

### Synopsis

    #include "petscsys.h"
    PetscErrorCode PetscCommRestoreComm(MPI_Comm comm_in,MPI_Comm *comm_out)

Collective

### Input Parameters

| comm_in | - Input communicator
| comm_out | - returned communicator

### See Also

PetscObjectGetNewTag(), PetscCommGetNewTag(), PetscCommDestroy(), PetscCommRestoreComm()

### Level

developer

### Location

src/sys/objects/tagm.c
Index of all Sys routines
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