You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: test_casts.rs
    path of file: ./repos/c2rust/tests/casts/src
    
    the code of the file until where you have to start completion: use crate::cast_funptr::{rust_entry, rust_get_identity, rust_identity};
use crate::casts::rust_cast_stuff;

use libc::{c_int, c_uint, c_void};

use std::mem::transmute;

#[link(name = "test")]
exter
    
pub fn test_identity() {
    for i in 0..10 {
        let id = unsafe { identity(i) };
        let rust_id = unsafe { rust_identity(i) };

        assert_eq!(id, i);
        assert_eq!(rust_id, i);
    }

    let transmuted_rust_identity: unsafe extern "C" fn(_: libc::c_int) -> libc::c_int =
        unsafe { transmute(rust_get_identity()) };
    let transmuted_identity: unsafe extern "C" fn(_: libc::c_int) -> libc::c_int =
        unsafe { transmute(get_identity()) };

    for i in 0..10 {
        let id = unsafe { transmuted_identity(i) };
        let rust_id = unsafe { transmuted_rust_identity(i) };

        assert_eq!(id, i);
        assert_eq!(rust_id, i);
    }
}