:orphan:
# PETSC_FALSE
False value of `PetscBool`
## Note
Zero integer
## See Also
`PetscBool`, `PetscBool3`, `PETSC_TRUE`
## Level
beginner
## Location
include/petscsystypes.h
## Examples
src/dm/dt/dualspace/impls/lagrange/tutorials/ex1.c
src/dm/dt/dualspace/impls/lagrange/tutorials/ex2.c
src/dm/field/tutorials/ex1.c
src/dm/impls/forest/tutorials/ex1.c
src/dm/impls/plex/tutorials/ex10.c
src/dm/impls/plex/tutorials/ex11.c
src/dm/impls/plex/tutorials/ex4f90.F90
src/dm/impls/plex/tutorials/ex5.c
src/dm/impls/plex/tutorials/ex8.c
src/dm/impls/plex/tutorials/ex9.c
src/dm/impls/stag/tutorials/ex2.c
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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/include/petscsystypes.h)
[Index of all Sys routines](index.md)
[Table of Contents for all manual pages](/manualpages/index.md)
[Index of all manual pages](/manualpages/singleindex.md)