SumSquare

Struct SumSquare 

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pub struct SumSquare<'a> { /* private fields */ }
Expand description

Computes the sum of squares of a sequence of numbers.

This is conceptually equivalent to slice.iter().map(|&x| x * x).sum() but more efficient as it computes multiple partial sums in parallel using SIMD and then sums across the SIMD lanes at the end. This will produce very slightly different results because the additions are happening in a different order.

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impl<'a> SumSquare<'a>

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pub fn new(input: &'a [f32]) -> Self

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impl SimdOp for SumSquare<'_>

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type Output = f32

The type of the operation’s result.
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fn eval<I: Isa>(self, isa: I) -> Self::Output

Evaluate the operation using the given instruction set.
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fn dispatch(self) -> Self::Output
where Self: Sized,

Dispatch this operation using the preferred ISA for the current platform.

Auto Trait Implementations§

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impl<'a> Freeze for SumSquare<'a>

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impl<'a> RefUnwindSafe for SumSquare<'a>

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impl<'a> Send for SumSquare<'a>

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impl<'a> Sync for SumSquare<'a>

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impl<'a> Unpin for SumSquare<'a>

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impl<'a> UnwindSafe for SumSquare<'a>

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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.