# VecPointwiseMaxAbs
Computes the componentwise maximum of the absolute values w_i = max(abs(x_i), abs(y_i)). 
## Synopsis
```
#include "petscvec.h"   
PetscErrorCode VecPointwiseMaxAbs(Vec w, Vec x, Vec y)
```
Logically Collective on Vec


## Input Parameters

- ***x, y  -*** the vectors



## Output Parameter

- ***w -*** the result





## Notes
any subset of the x, y, and w may be the same vector.


## See Also
 `VecPointwiseDivide()`, `VecPointwiseMult()`, `VecPointwiseMin()`, `VecPointwiseMax()`, `VecMaxPointwiseDivide()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/interface/vector.c.html#VecPointwiseMaxAbs">src/vec/vec/interface/vector.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/impls/seq/bvec2.c.html#VecPointwiseMaxAbs_Seq">VecPointwiseMaxAbs_Seq in src/vec/vec/impls/seq/bvec2.c</A><BR>


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[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](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
