moved low-level code into fat-bits subcrate

src/utils.rs

@@ -1,26 +0,0 @@
-pub fn load_u16_le(bytes: &[u8]) -> u16 {
-    assert_eq!(bytes.len(), 2);
-
-    u16::from_le_bytes(bytes.try_into().unwrap())
-}
-pub fn load_u32_le(bytes: &[u8]) -> u32 {
-    assert_eq!(bytes.len(), 4);
-
-    u32::from_le_bytes(bytes.try_into().unwrap())
-}
-
-/// replace the value at x with f(x)
-///
-/// SAFETY:
-/// should be safe, I guess? MIRI didn't complain about it
-pub fn replace<T>(x: &mut T, f: impl FnOnce(T) -> T) {
-    unsafe {
-        let x_ptr = x as *mut T;
-
-        let old_x = std::ptr::read(x_ptr);
-
-        let new_x = f(old_x);
-
-        std::ptr::write(x_ptr, new_x);
-    }
-}