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# DMSetVariableBounds

sets a function to compute the lower and upper bound vectors for `SNESVI`.

## Synopsis

    #include "petscdm.h"
    #include "petscdmlabel.h"
    #include "petscds.h"
    PetscErrorCode DMSetVariableBounds(DM dm, PetscErrorCode (*f)(DM, Vec, Vec))

Logically Collective

## Input Parameters

- dm - the DM object

- f - the function that computes variable bounds used by `SNESVI` (use `NULL` to cancel a previous function that was set)

## Developer Note

Should be called `DMSetComputeVIBounds()` or something similar

## See Also

DM Basics, `DM`, `DMComputeVariableBounds()`, `DMHasVariableBounds()`, `DMView()`, `DMCreateGlobalVector()`, `DMCreateInterpolation()`, `DMCreateColoring()`, `DMCreateMatrix()`, `DMCreateMassMatrix()`, `DMGetApplicationContext()`, `DMSetJacobian()`

## Level

intermediate

## Location

src/dm/interface/dm.c

Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages