pub type MPI_Grequest_query_function = Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: *mut MPI_Status) -> c_int>;Aliased Type§
enum MPI_Grequest_query_function {
None,
Some(unsafe extern "C" fn(*mut c_void, *mut ompi_status_public_t) -> i32),
}