Struct CpuEngine 

pub struct CpuEngine { /* private fields */ }

CPU compute engine using SIMD and rayon parallelism.

Owns a dedicated rayon::ThreadPool so that the cpu_threads configuration is always honoured, regardless of whether any other code has already initialised the rayon global pool. Operations that benefit from data-parallelism (autocorrelation, dot product on large vectors) are dispatched onto this pool when the input exceeds PARALLEL_THRESHOLD.

Implementations

impl CpuEngine

pub fn new(config: ComputeConfig) -> Result<Self, ComputeError>

Creates a new CPU compute engine with the given configuration.

The dedicated thread pool is sized according to ComputeConfig::cpu_threads (0 = number of available cores).

pub fn thread_pool(&self) -> &ThreadPool

Returns a reference to the owned thread pool.

pub fn num_threads(&self) -> usize

Returns the number of threads in the pool.

pub fn batch_z_score(&self, values: &[f64]) -> Result<Vec<f64>, ComputeError>

Compute z-scores for a batch of values.

Uses sample variance (Bessel’s correction, n − 1); all arithmetic in f64. A constant series (zero standard deviation) yields all-zero z-scores.

Errors

Returns ComputeError::InsufficientData if values has fewer than 2 elements.

Trait Implementations

impl ComputeEngine for CpuEngine

fn batch_dot_product(&self, a: &[f64], b: &[f64]) -> Result<f64, ComputeError>

Dot product of two vectors.

fn batch_matrix_solve( &self, a_flat: &[f64], b: &[f64], n: usize, ) -> Result<Vec<f64>, ComputeError>

Solve a linear system Ax = b using LU decomposition.

fn batch_exponential_smooth( &self, values: &[f64], alpha: f64, ) -> Result<Vec<f64>, ComputeError>

Exponential smoothing on a time series.

fn batch_difference( &self, values: &[f64], d: usize, ) -> Result<Vec<f64>, ComputeError>

Compute d-th order differences of a series.

fn batch_autocorrelation( &self, values: &[f64], max_lag: usize, ) -> Result<Vec<f64>, ComputeError>

Compute autocorrelation at the given lags.

fn batch_least_squares( &self, a_flat: &[f64], b: &[f64], m: usize, n: usize, ) -> Result<Vec<f64>, ComputeError>

Solve least-squares: find x minimizing ||Ax - b||².

impl Debug for CpuEngine

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

Formats the value using the given formatter.

impl Default for CpuEngine

fn default() -> Self

Returns the “default value” for a type.