# Struct core::arch::x86::__m128i
1.27.0[−][src]

    #[repr(simd)]pub struct __m128i(_, _);

This is supported on x86 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

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### impl Clone for __m128i

This is supported on x86 or x86-64 only.
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#### fn clone(&self) -> __m128i

Returns a copy of the value. Read more

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

Performs copy-assignment from `source`. Read more

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### impl Debug for __m128i

This is supported on x86 or x86-64 only.
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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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### impl Copy for __m128i

This is supported on x86 or x86-64 only.

## Auto Trait Implementations

### impl Send for __m128i

### impl Sync for __m128i

### impl Unpin for __m128i

## Blanket Implementations

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

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#### pub fn type_id(&Self) -> TypeId

Gets the `TypeId` of `self`. Read more

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

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#### pub fn borrow(&Self) -> &T

Immutably borrows from an owned value. Read more

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

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#### pub fn borrow_mut(&mut Self) -> &mut T

Mutably borrows from an owned value. Read more

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### impl<T> From<T> for T

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#### pub fn from(T) -> T

Performs the conversion.

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

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#### pub fn into(Self) -> U

Performs the conversion.

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

#### type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

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### 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.

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#### pub fn try_into(Self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.