# Struct core::arch::x86::__m256i

1.27.0 · source ·

    #[repr(simd)]pub struct __m256i(/* private fields */);

Available on x86 and (x86 or x86-64) only.
Expand description

256-bit wide integer vector type, x86-specific

This type is the same as the `__m256i` type defined by Intel, representing a 256-bit SIMD register. Usage of this type typically corresponds to the `avx` and up target features for x86/x86_64.

Internally this type may be viewed as:

- `i8x32` - thirty two `i8` variables packed together
- `i16x16` - sixteen `i16` variables packed together
- `i32x8` - eight `i32` variables packed together
- `i64x4` - four `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 `__m256i` typically just means a “bag of bits” which is left up to interpretation at the point of use.

## §Examples

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

    let all_bytes_zero = _mm256_setzero_si256();
    let all_bytes_one = _mm256_set1_epi8(1);
    let eight_i32 = _mm256_set_epi32(1, 2, 3, 4, 5, 6, 7, 8);

Run

## Trait Implementations§

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### impl Clone for __m256i

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#### fn clone(&self) -> __m256i

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 __m256i

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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 From<Simd<i16, 16>> for __m256i

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#### fn from(value: i16x16) -> __m256i

Converts to this type from the input type.
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### impl From<Simd<i32, 8>> for __m256i

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#### fn from(value: i32x8) -> __m256i

Converts to this type from the input type.
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### impl From<Simd<i64, 4>> for __m256i

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#### fn from(value: i64x4) -> __m256i

Converts to this type from the input type.
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### impl From<Simd<i8, 32>> for __m256i

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#### fn from(value: i8x32) -> __m256i

Converts to this type from the input type.
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### impl From<Simd<isize, 4>> for __m256i

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#### fn from(value: isizex4) -> __m256i

Converts to this type from the input type.
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### impl From<Simd<u16, 16>> for __m256i

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#### fn from(value: u16x16) -> __m256i

Converts to this type from the input type.
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### impl From<Simd<u32, 8>> for __m256i

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#### fn from(value: u32x8) -> __m256i

Converts to this type from the input type.
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### impl From<Simd<u64, 4>> for __m256i

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#### fn from(value: u64x4) -> __m256i

Converts to this type from the input type.
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### impl From<Simd<u8, 32>> for __m256i

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#### fn from(value: u8x32) -> __m256i

Converts to this type from the input type.
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### impl From<Simd<usize, 4>> for __m256i

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#### fn from(value: usizex4) -> __m256i

Converts to this type from the input type.
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### impl From<__m256i> for i16x16

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#### fn from(value: __m256i) -> i16x16

Converts to this type from the input type.
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### impl From<__m256i> for i32x8

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#### fn from(value: __m256i) -> i32x8

Converts to this type from the input type.
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### impl From<__m256i> for i64x4

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#### fn from(value: __m256i) -> i64x4

Converts to this type from the input type.
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### impl From<__m256i> for i8x32

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#### fn from(value: __m256i) -> i8x32

Converts to this type from the input type.
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### impl From<__m256i> for isizex4

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#### fn from(value: __m256i) -> isizex4

Converts to this type from the input type.
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### impl From<__m256i> for u16x16

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#### fn from(value: __m256i) -> u16x16

Converts to this type from the input type.
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### impl From<__m256i> for u32x8

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#### fn from(value: __m256i) -> u32x8

Converts to this type from the input type.
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### impl From<__m256i> for u64x4

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#### fn from(value: __m256i) -> u64x4

Converts to this type from the input type.
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### impl From<__m256i> for u8x32

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#### fn from(value: __m256i) -> u8x32

Converts to this type from the input type.
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### impl From<__m256i> for usizex4

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#### fn from(value: __m256i) -> usizex4

Converts to this type from the input type.
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### impl Copy for __m256i

## Auto Trait Implementations§

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### impl RefUnwindSafe for __m256i

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### impl Send for __m256i

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### impl Sync for __m256i

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### impl Unpin for __m256i

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### impl UnwindSafe for __m256i

## Blanket Implementations§

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

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#### 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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#### 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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#### 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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#### fn from(t: T) -> T

Returns the argument unchanged.

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

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#### fn into(self) -> U

Calls `U::from(self)`.

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

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

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: 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>,

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

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.