As conversion example

as.rs

use std::mem::transmute;
fn main() {
    let num: u32 = u32::MAX;
    println!("u32: {num}");
    println!("u16: {}", num as u16);
    println!("i32: {}", num as i32);
    println!("f32: {}", num as f32);
    let bytes_u32: [u8; 4] = unsafe { transmute(num.to_be()) };
    let bytes_u16: [u8; 2] = unsafe { transmute((num as u16).to_be()) };
    let bytes_i32: [u8; 4] = unsafe { transmute((num as i32).to_be()) };
    let bytes_f32: [u8; 4] = unsafe { transmute((num as f32).to_be_bytes()) };

    println!("bytes_u32: {:?}", bytes_u32);
    println!("bytes_u16: {:?}", bytes_u16);
    println!("bytes_i32: {:?}", bytes_i32);
    println!("bytes_f32: {:?}", bytes_f32);
    println!(
        "f32::from_be_bytes(bytes_f32): {}",
        f32::from_be_bytes(bytes_f32)
    );
}