Struct Align16U128

#[repr(C, align(16))]
pub struct Align16U128(pub u128);

A thin wrapper around u128 that ensures 16-byte alignment.

Since wasm is happy with 8-byte aligned u128, a u128 value would sometimes get placed into an 8-byte aligned memory address by Rust when created in wasm-land, but this breaks memory safety requirements if we want to access that value directly on the host side and triggering a relevant assertion in safe casting functions. As a result, in ffi types, this should always be used over a raw u128

Tuple Fields

0: u128

Methods from Deref<Target = u128>

pub const MIN: u128 = 0u128

pub const MAX: u128 = 340_282_366_920_938_463_463_374_607_431_768_211_455u128

pub const BITS: u32 = 128u32

Trait Implementations

impl AsMut<u128> for Align16U128

fn as_mut(&mut self) -> &mut u128

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<u128> for Align16U128

fn as_ref(&self) -> &u128

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Align16U128

fn clone(&self) -> Align16U128

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Align16U128

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Align16U128

fn default() -> Align16U128

Returns the “default value” for a type.

impl Deref for Align16U128

type Target = u128

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl DerefMut for Align16U128

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl Display for Align16U128

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Align16U128> for u128

fn from(value: Align16U128) -> Self

Converts to this type from the input type.

impl From<u128> for Align16U128

fn from(value: u128) -> Self

Converts to this type from the input type.

impl Zeroable for Align16U128

fn zeroed() -> Self

Calls zeroed.

impl Copy for Align16U128

impl Pod for Align16U128