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