Struct v128

#[repr(simd)]
pub struct v128([i32; 4]);

Available on target_family="wasm" only.

WASM-specific 128-bit wide SIMD vector type.

This type corresponds to the v128 type in the WebAssembly SIMD proposal. This type is 128-bits large and the meaning of all the bits is defined within the context of how this value is used.

This same type is used simultaneously for all 128-bit-wide SIMD types, for example:

• sixteen 8-bit integers (both i8 and u8)
• eight 16-bit integers (both i16 and u16)
• four 32-bit integers (both i32 and u32)
• two 64-bit integers (both i64 and u64)
• four 32-bit floats (f32)
• two 64-bit floats (f64)

The v128 type in Rust is intended to be quite analogous to the v128 type in WebAssembly. Operations on v128 can only be performed with the functions in this module.

Tuple Fields

0: [i32; 4]

Implementations

impl v128

fn splat(value: i32) -> v128

Using my_simd([x; N]) seemingly fails tests, so use this internal helper for it instead.

const fn as_array(&self) -> &[i32; 4]

Returns an array reference containing the entire SIMD vector.

fn as_mut_array(&mut self) -> &mut [i32; 4]

Returns a mutable array reference containing the entire SIMD vector.

impl v128

pub(crate) fn as_u8x16(self) -> u8x16

pub(crate) fn as_u16x8(self) -> u16x8

pub(crate) fn as_u32x4(self) -> u32x4

pub(crate) fn as_u64x2(self) -> u64x2

pub(crate) fn as_i8x16(self) -> i8x16

pub(crate) fn as_i16x8(self) -> i16x8

pub(crate) fn as_i32x4(self) -> i32x4

pub(crate) fn as_i64x2(self) -> i64x2

pub(crate) fn as_f32x4(self) -> f32x4

pub(crate) fn as_f64x2(self) -> f64x2

Trait Implementations

impl Clone for v128

fn clone(&self) -> v128

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for v128

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

Formats the value using the given formatter.

impl Copy for v128