Struct Sum 

pub struct Sum;

Sum reduction: accumulate by adding vectors, finalize with sum_reduce.

view.reduce(Sum) is equivalent to view.sum().

Trait Implementations

impl Clone for Sum

fn clone(&self) -> Sum

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Sum

impl Debug for Sum

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

Formats the value using the given formatter.

impl Eq for Sum

impl PartialEq for Sum

fn eq(&self, other: &Sum) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<T> ReductionOp<T> for Sum

where T: NumericElement,

unsafe fn accumulate<Arch>( acc: <Arch as SimdKernel<T>>::Vector, v: <Arch as SimdKernel<T>>::Vector, ) -> <Arch as SimdKernel<T>>::Vector

where Arch: SimdKernel<T>,

Merge a new data vector v into accumulator acc.

unsafe fn finalize<Arch>(acc: <Arch as SimdKernel<T>>::Vector) -> T

where Arch: SimdKernel<T>,

Reduce the final accumulator to a scalar.

fn identity_scalar() -> T

The identity element for this reduction as a scalar.

fn scalar_combine(a: T, b: T) -> T

Combine two scalar partial results using this reduction.

unsafe fn fma_pair_accumulate<Arch>( acc: <Arch as SimdKernel<T>>::Vector, a: <Arch as SimdKernel<T>>::Vector, b: <Arch as SimdKernel<T>>::Vector, ) -> <Arch as SimdKernel<T>>::Vector

where Arch: SimdKernel<T>,

FMA-aware pairwise accumulation: acc = fuse(acc, a, b) where fuse may use a single fused multiply-add instruction rather than a separate mul + accumulate.

fn scalar_accumulate(acc: T, elem: T) -> T

Accumulate a single scalar element elem into a scalar accumulator acc.

unsafe fn identity_vector<Arch>() -> <Arch as SimdKernel<T>>::Vector

where Arch: SimdKernel<T>,

Splat the identity element into a vector register.

unsafe fn transform_vector<Arch>( v: <Arch as SimdKernel<T>>::Vector, ) -> <Arch as SimdKernel<T>>::Vector

where Arch: SimdKernel<T>,

Per-element lane transform applied before combining (identity by default).

unsafe fn combine_vectors<Arch>( a: <Arch as SimdKernel<T>>::Vector, b: <Arch as SimdKernel<T>>::Vector, ) -> <Arch as SimdKernel<T>>::Vector

where Arch: SimdKernel<T>,

Merge two partial accumulators WITHOUT the per-element transform.

impl StructuralPartialEq for Sum