# PetscMergeMPIIntArray
Merges two SORTED `PetscMPIInt` arrays. 
## Synopsis
```
#include "petscsys.h"  
PetscErrorCode PetscMergeMPIIntArray(PetscInt an, const PetscMPIInt aI[], PetscInt bn, const PetscMPIInt bI[], PetscInt *n, PetscMPIInt **L)
```
Not Collective


## Input Parameters

- ***an  -*** number of values in the first array
- ***aI  -*** first sorted array of integers
- ***bn  -*** number of values in the second array
- ***bI  -*** second array of integers



## Output Parameters

- ***n   -*** number of values in the merged array (<= an + bn)
- ***L   -*** merged sorted array, allocated if address of NULL pointer is passed





## See Also
 `PetscIntSortSemiOrdered()`, `PetscSortReal()`, `PetscSortIntWithPermutation()`, `PetscSortInt()`, `PetscSortIntWithArray()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/utils/sorti.c.html#PetscMergeMPIIntArray">src/sys/utils/sorti.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/utils/sorti.c)


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