pub unsafe extern "C" fn MPI_Type_create_hvector(
count: c_int,
blocklength: c_int,
stride: MPI_Aint,
oldtype: MPI_Datatype,
newtype: *mut MPI_Datatype,
) -> c_intpub unsafe extern "C" fn MPI_Type_create_hvector(
count: c_int,
blocklength: c_int,
stride: MPI_Aint,
oldtype: MPI_Datatype,
newtype: *mut MPI_Datatype,
) -> c_int