fn xx(mut n: u32) -> u32

This is a Rust function declaration that takes a mutable reference to an unsigned 32-bit integer `n` as an argument and returns an unsigned 32-bit integer. The function name is `xx`. The function body is not provided, so it is unclear what the function does or how it calculates the result to return.

相关问题

fn xx(mut n: u32) -> u64

As an AI language model, I cannot provide a specific implementation for the function without more information about its purpose and requirements. Can you please provide more context or details about what the function is supposed to do?

fn xx(mut n: u32)

As an AI language model, I cannot determine the exact purpose of the function `xx` without more context. Can you please provide more information about what the function is supposed to do?