Struct core::arch::x86_64::__m128i

1.27.0 · source ·
#[repr(simd)]
pub struct __m128i(/* private fields */);
Available on x86-64 and (x86 or x86-64) only.
Expand description

128-bit wide integer vector type, x86-specific

This type is the same as the __m128i type defined by Intel, representing a 128-bit SIMD register. Usage of this type typically corresponds to the sse and up target features for x86/x86_64.

Internally this type may be viewed as:

  • i8x16 - sixteen i8 variables packed together
  • i16x8 - eight i16 variables packed together
  • i32x4 - four i32 variables packed together
  • i64x2 - two i64 variables packed together

(as well as unsigned versions). Each intrinsic may interpret the internal bits differently, check the documentation of the intrinsic to see how it’s being used.

Note that this means that an instance of __m128i typically just means a “bag of bits” which is left up to interpretation at the point of use.

Most intrinsics using __m128i are prefixed with _mm_ and the integer types tend to correspond to suffixes like “epi8” or “epi32”.

§Examples

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

let all_bytes_zero = _mm_setzero_si128();
let all_bytes_one = _mm_set1_epi8(1);
let four_i32 = _mm_set_epi32(1, 2, 3, 4);
Run

Trait Implementations§

source§

impl Clone for __m128i

source§

fn clone(&self) -> __m128i

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl Debug for __m128i

source§

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

Formats the value using the given formatter. Read more
source§

impl From<Simd<i16, 8>> for __m128i

source§

fn from(value: i16x8) -> __m128i

Converts to this type from the input type.
source§

impl From<Simd<i32, 4>> for __m128i

source§

fn from(value: i32x4) -> __m128i

Converts to this type from the input type.
source§

impl From<Simd<i64, 2>> for __m128i

source§

fn from(value: i64x2) -> __m128i

Converts to this type from the input type.
source§

impl From<Simd<i8, 16>> for __m128i

source§

fn from(value: i8x16) -> __m128i

Converts to this type from the input type.
source§

impl From<Simd<isize, 2>> for __m128i

source§

fn from(value: isizex2) -> __m128i

Converts to this type from the input type.
source§

impl From<Simd<u16, 8>> for __m128i

source§

fn from(value: u16x8) -> __m128i

Converts to this type from the input type.
source§

impl From<Simd<u32, 4>> for __m128i

source§

fn from(value: u32x4) -> __m128i

Converts to this type from the input type.
source§

impl From<Simd<u64, 2>> for __m128i

source§

fn from(value: u64x2) -> __m128i

Converts to this type from the input type.
source§

impl From<Simd<u8, 16>> for __m128i

source§

fn from(value: u8x16) -> __m128i

Converts to this type from the input type.
source§

impl From<Simd<usize, 2>> for __m128i

source§

fn from(value: usizex2) -> __m128i

Converts to this type from the input type.
source§

impl From<__m128i> for i16x8

source§

fn from(value: __m128i) -> i16x8

Converts to this type from the input type.
source§

impl From<__m128i> for i32x4

source§

fn from(value: __m128i) -> i32x4

Converts to this type from the input type.
source§

impl From<__m128i> for i64x2

source§

fn from(value: __m128i) -> i64x2

Converts to this type from the input type.
source§

impl From<__m128i> for i8x16

source§

fn from(value: __m128i) -> i8x16

Converts to this type from the input type.
source§

impl From<__m128i> for isizex2

source§

fn from(value: __m128i) -> isizex2

Converts to this type from the input type.
source§

impl From<__m128i> for u16x8

source§

fn from(value: __m128i) -> u16x8

Converts to this type from the input type.
source§

impl From<__m128i> for u32x4

source§

fn from(value: __m128i) -> u32x4

Converts to this type from the input type.
source§

impl From<__m128i> for u64x2

source§

fn from(value: __m128i) -> u64x2

Converts to this type from the input type.
source§

impl From<__m128i> for u8x16

source§

fn from(value: __m128i) -> u8x16

Converts to this type from the input type.
source§

impl From<__m128i> for usizex2

source§

fn from(value: __m128i) -> usizex2

Converts to this type from the input type.
source§

impl Copy for __m128i

Auto Trait Implementations§

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

source§

fn into(self) -> U

Calls U::from(self).

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

source§

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

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

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

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

Performs the conversion.