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use std::cmp::min;
use std::mem::{size_of, zeroed};
pub unsafe fn mem_eq<T: Sized>(a: &T, b: &T) -> bool {
let a_addr = a as *const T as usize;
let b_addr = b as *const T as usize;
for i in 0..size_of::<T>() {
if *((a_addr + i) as *const u8) != *((b_addr + i) as *const u8) {
return false;
}
}
true
}
pub unsafe fn transmute_union<I, O>(input: &I) -> O
where
I: Sized,
O: Sized,
{
let mut output: O = zeroed();
let copy_len = min(size_of::<I>(), size_of::<O>());
for i in 0..copy_len {
*((&mut output as *mut O as usize + i) as *mut u8) =
*((input as *const I as usize + i) as *const u8);
}
output
}