PetscObjectIsNull#
returns true if the given PETSc object is a null object Fortran only
Synopsis#
#include <petsc/finclude/petscsys.h>
PetscBool PetscObjectIsNull(PetscObject obj)
Logically Collective
Input Parameters#
obj - the PETSc object
Example Usage#
if (PetscObjectIsNull(dm)) then
if (.not. PetscObjectIsNull(dm)) then
Note#
Code such as
if (dm == PETSC_NULL_DM) then
is not allowed.
See Also#
PetscObject, PETSC_NULL_OBJECT, PETSC_NULL_VEC, PETSC_NULL_VEC_ARRAY
Level#
beginner
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages