PetscObjectQuery#

Gets a PETSc object associated with a given object that was composed with PetscObjectCompose()

Synopsis#

#include "petscsys.h"    
PetscErrorCode PetscObjectQuery(PetscObject obj, const char name[], PetscObject *ptr)

Not Collective

Input Parameters#

  • obj - the PETSc object Thus must be cast with a (PetscObject), for example, PetscObjectCompose((PetscObject)mat,…);

  • name - name associated with child object

  • ptr - the other PETSc object associated with the PETSc object, this must be cast with (PetscObject*)

Note#

The reference count of neither object is increased in this call

See Also#

PetscObjectCompose(), PetscObjectComposeFunction(), PetscObjectQueryFunction(), PetscContainer PetscContainerGetPointer()

Level#

advanced

Location#

src/sys/objects/inherit.c

Examples#

src/ksp/ksp/tutorials/ex73.c.html
src/snes/tutorials/ex48.c.html
src/ts/tutorials/ex29.c.html
src/ts/tutorials/ex77.c.html


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