:orphan:
# VecReciprocal
Replaces each component of a vector by its reciprocal.
## Synopsis
```
#include "petscvec.h"
PetscErrorCode VecReciprocal(Vec vec)
```
Logically Collective
## Input Parameter
- ***vec -*** the vector
## Output Parameter
- ***vec -*** the vector reciprocal
## Note
Vector entries with value 0.0 are not changed
## See Also
[](ch_vectors), `Vec`, `VecLog()`, `VecExp()`, `VecSqrtAbs()`
## Level
intermediate
## Location
src/vec/vec/interface/vector.c
## Examples
src/ksp/ksp/tutorials/ex15.c
src/ksp/ksp/tutorials/ex15f.F90
src/snes/tutorials/ex70.c
src/tao/constrained/tutorials/tomographyADMM.c
src/tao/pde_constrained/tutorials/elliptic.c
src/tao/pde_constrained/tutorials/parabolic.c
src/tao/tutorials/ex4.c
src/tao/unconstrained/tutorials/burgers_spectral.c
src/tao/unconstrained/tutorials/spectraladjointassimilation.c
src/ts/tutorials/ex50.c
## Implementations
VecReciprocal_Nest in src/vec/vec/impls/nest/vecnest.c
VecReciprocal_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/vec/vec/interface/vector.c)
[Index of all Vec routines](index.md)
[Table of Contents for all manual pages](/manualpages/index.md)
[Index of all manual pages](/manualpages/singleindex.md)