Function mpi::ffi::PMPI_Type_create_keyval

pub unsafe extern fn PMPI_Type_create_keyval(type_copy_attr_fn: MPI_Type_copy_attr_function,
                                             type_delete_attr_fn: MPI_Type_delete_attr_function,
                                             type_keyval: *mut c_int,
                                             extra_state: *mut c_void)
                                             -> c_int