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# MPIU_REAL
Portable MPI datatype corresponding to `PetscReal` independent of what precision `PetscReal` is in
## Notes
In MPI calls that require an MPI datatype that matches a `PetscReal` or array of `PetscReal` values, pass this value.
## See Also
`PetscReal`, `PetscScalar`, `PetscComplex`, `PetscInt`, `MPIU_SCALAR`, `MPIU_COMPLEX`, `MPIU_INT`
## Level
beginner
## Location
include/petscmath.h
## Examples
src/ksp/ksp/tutorials/ex82.c
src/snes/tutorials/ex13.c
src/snes/tutorials/ex48.c
src/snes/tutorials/ex5.c
src/snes/tutorials/ex55.c
src/snes/tutorials/ex55k.kokkos.cxx
src/sys/classes/random/tutorials/ex2.c
src/tao/bound/tutorials/plate2.c
src/tao/constrained/tutorials/ex1.c
src/tao/leastsquares/tutorials/chwirut2.c
src/tao/unconstrained/tutorials/eptorsion2.c
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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/include/petscmath.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)