Struct __m128d

#[repr(simd)]
pub struct __m128d(pub(in ::core_arch::x86) [f64; 2]);

128-bit wide set of two f64 types, x86-specific

This type is the same as the __m128d type defined by Intel, representing a 128-bit SIMD register which internally is consisted of two packed f64 instances. Usage of this type typically corresponds to the sse and up target features for x86/x86_64.

Note that unlike __m128i, the integer version of the 128-bit registers, this __m128d type has one interpretation. Each instance of __m128d always corresponds to f64x2, or two f64 types packed together.

The in-memory representation of this type is the same as the one of an equivalent array (i.e. the in-memory order of elements is the same, and there is no padding); however, the alignment is different and equal to the size of the type. Note that the ABI for function calls may not be the same.

Most intrinsics using __m128d are prefixed with _mm_ and are suffixed with "pd" (or otherwise contain "pd"). Not to be confused with "ps" which is used for __m128.

Examples

# #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {
#[cfg(target_arch = "x86")]
use std::arch::x86::*;
#[cfg(target_arch = "x86_64")]
use std::arch::x86_64::*;

# #[target_feature(enable = "sse2")]
# #[allow(unused_unsafe)] // temporary, to unstick CI
# unsafe fn foo() { unsafe {
let two_zeros = _mm_setzero_pd();
let two_ones = _mm_set1_pd(1.0);
let two_floats = _mm_set_pd(1.0, 2.0);
# }}
# if is_x86_feature_detected!("sse2") { unsafe { foo() } }
# }

Fields

0: [f64; 2]

Implementations

impl __m128d

const fn as_f64x2(self) -> Simd<f64, 2>

impl __m128d

fn splat(value: f64) -> __m128d

Put the same value in every lane.

const fn as_array(&self) -> &[f64; 2]

Returns an array reference containing the entire SIMD vector.

fn as_mut_array(&mut self) -> &mut [f64; 2]

Returns a mutable array reference containing the entire SIMD vector.

Trait Implementations

impl Clone for __m128d

fn clone(&self) -> __m128d

impl Copy for __m128d

impl Debug for __m128d

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

impl From<Simd<f64, 2>> for __m128d

fn from(value: f64x2) -> __m128d

impl From<Simd<f64, 2>> for __m128d

fn from(simd: Simd<f64, 2>) -> Self

impl TrivialClone for __m128d

Auto Trait Implementations

impl Freeze for __m128d

impl RefUnwindSafe for __m128d

impl Send for __m128d

impl Sync for __m128d

impl Unpin for __m128d

impl UnsafeUnpin for __m128d

impl UnwindSafe for __m128d

Blanket Implementations

impl<T> Any for __m128d where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for __m128d where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for __m128d where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> CloneToUninit for __m128d where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

impl<T> From<T> for __m128d

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Printable for __m128d where T: Copy + Debug,

impl<T> SizeHint for __m128d where T: ?Sized,

fn lower_bound(&self) -> usize
fn upper_bound(&self) -> Option<usize>

impl<T> SizedTypeProperties for __m128d

impl<T, U> Into<U> for __m128d where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

impl<T, U> TryFrom<U> for __m128d where U: Into<T>,

type Error = Infallible;
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for __m128d where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error;
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>