**petsc-3.6.1 2015-07-22**

# PetscMPIInt

datatype used to represent 'int' parameters to MPI functions.
Notes: usually this is the same as PetscInt, but if PETSc was built with --with-64-bit-indices but
standard C/Fortran integers are 32 bit then this is NOT the same as PetscInt it remains 32 bit

PetscMPIIntCast(a,&b) checks if the given PetscInt a will fit in a PetscMPIInt, if not it
generates a PETSC_ERR_ARG_OUTOFRANGE error.

### See Also

PetscBLASInt, PetscInt

**Level:**intermediate

Location:include/petscsys.h

Index of all Sys routines

Table of Contents for all manual pages

Index of all manual pages