Struct SmaState 

pub struct SmaState { /* private fields */ }

Incremental SMA. After warm-up, each SmaState::push is O(1).

Batch sma is implemented as SmaState::new + SmaState::push_bars.

Examples

use finance_solution::stocks::ta::SmaState;
let mut s = SmaState::new(3).unwrap();
assert_eq!(s.push(1.0).unwrap(), None);
assert_eq!(s.push(2.0).unwrap(), None);
assert!((s.push(3.0).unwrap().unwrap() - 2.0).abs() < 1e-12);
assert!((s.push(6.0).unwrap().unwrap() - 3.666666666666).abs() < 1e-9);

Implementations

impl SmaState

pub fn new(period: usize) -> FinanceResult<Self>

Fallible constructor (period >= 1). Named new → FinanceResult (not try_new).

pub fn from_history(period: usize, closes: &[f64]) -> FinanceResult<Self>

pub fn period(&self) -> usize

pub fn reset(&mut self)

pub fn push(&mut self, close: f64) -> FinanceResult<Option<f64>>

Push one close. None until period samples seen.

pub fn push_bars(&mut self, closes: &[f64]) -> FinanceResult<Vec<Option<f64>>>

Push many closes (one streaming payload). One output per input.

pub fn last(&self) -> Option<f64>

Trait Implementations

impl Clone for SmaState

fn clone(&self) -> SmaState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SmaState

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

Formats the value using the given formatter.