# PetscDataTypeToMPIDataType

Converts the PETSc name of a datatype to its MPI name.

### Synopsis

    #include "petsc.h"
    PetscErrorCode PETSC_DLLEXPORT PetscDataTypeToMPIDataType(PetscDataType ptype,MPI_Datatype* mtype)

Not collective

### Input Parameter

ptype -the PETSc datatype name (for example PETSC_DOUBLE)

### Output Parameter

mtype -the MPI datatype (for example MPI_DOUBLE, ...)

### See Also

PetscDataType

Level:advanced
Location:src/sys/src/objects/ptype.c
Index of all Sys routines
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