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# ISRestoreIndices
Restores an index set to a usable state after a call to `ISGetIndices()`.
## Synopsis
```
#include "petscis.h"
PetscErrorCode ISRestoreIndices(IS is, const PetscInt *ptr[])
```
Not Collective
## Input Parameters
- ***is -*** the index set
- ***ptr -*** the pointer obtained by `ISGetIndices()`
## Fortran Note
`ISRestoreIndices()` Fortran binding is deprecated (since PETSc 3.19), use `ISRestoreIndicesF90()`
## See Also
`IS`, `ISGetIndices()`, `ISRestoreIndicesF90()`
## Level
intermediate
## Location
src/vec/is/is/interface/index.c
## Examples
src/dm/impls/plex/tutorials/ex10.c
src/dm/tutorials/ex22.c
src/dm/tutorials/swarm_ex3.c
src/ksp/ksp/tutorials/ex19.c
src/ksp/ksp/tutorials/ex71.c
src/ksp/ksp/tutorials/ex76.c
src/snes/tutorials/ex13.c
src/snes/tutorials/ex56.c
src/snes/tutorials/ex77.c
src/tao/tutorials/ex3.c
src/ts/tutorials/ex11_sa.c
## Implementations
ISRestoreIndices_Block in src/vec/is/is/impls/block/block.c
ISRestoreIndices_General in src/vec/is/is/impls/general/general.c
ISRestoreIndices_Stride in src/vec/is/is/impls/stride/stride.c
---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/vec/is/is/interface/index.c)
[Index of all IS routines](index.md)
[Table of Contents for all manual pages](/manualpages/index.md)
[Index of all manual pages](/manualpages/singleindex.md)