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

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: Scalar> ReductionOp<T> for Sum

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

Merge a new data vector v into accumulator acc.

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

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: SimdKernel<T>>() -> Arch::Vector

Splat the identity element into a vector register.

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

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

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

Merge two partial accumulators WITHOUT the per-element transform.

impl StructuralPartialEq for Sum