PETSc version 3.17.4
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# AOPetscToApplicationPermuteInt

Permutes an array of blocks of integers in the PETSc ordering to the application-defined ordering.

### Synopsis

    #include "petscao.h"
    PetscErrorCode  AOPetscToApplicationPermuteInt(AO ao, PetscInt block, PetscInt array[])

Collective on AO

### Input Parameters

| ao | - The application ordering context
| block | - The block size
| array | - The integer array

### Output Parameter

| array | - The permuted array

Note: The length of the array should be block*N, where N is length provided to the AOCreate*() method that created the AO.

The permutation takes array[i_pet] --> array[i_app], where i_app is the index of 'i' in the application ordering and i_pet is the index of 'i' in the petsc ordering.

### See Also

AOCreateBasic(), AOView(), AOApplicationToPetsc(), AOPetscToApplicationIS()

### Level

beginner

### Location

src/vec/is/ao/interface/ao.c

### Implementations

AOPetscToApplicationPermuteInt_Basic in src/vec/is/ao/impls/basic/aobasic.c
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