fn print_raw_bytes<T: std::marker::Sized>(x: T) {
    let view = &x as *const _ as *const u8;
    unsafe {
        for i in 0..std::mem::size_of::<T>() as isize {
            println!("0x{:x}", *view.offset(i));
        }
    }
}

fn main() {
    let a = -0_f32;
    print_raw_bytes(a);
}