Struct AdOscillator 

pub struct AdOscillator { /* private fields */ }

Williams A/D Oscillator — the volume-free Williams Accumulation/ Distribution line measured against its own moving average, so it oscillates around zero instead of drifting like the cumulative line.

The underlying line is Larry Williams’ volume-less A/D (1972), which uses a true high/low anchored on the prior close; the oscillator subtracts its 13-bar simple moving average:

TR_h_t = max(close_{t−1}, high_t)
TR_l_t = min(close_{t−1}, low_t)
WAD_t  = WAD_{t−1} + (close_t − TR_l_t)   if close_t > close_{t−1}
WAD_t  = WAD_{t−1} + (close_t − TR_h_t)   if close_t < close_{t−1}
WAD_t  = WAD_{t−1}                          if close_t == close_{t−1}
WADOSC_t = WAD_t − SMA(WAD, 13)_t

This is distinct from the raw cumulative line, which Wickra ships as Wad: Wad is the drifting line for divergence analysis, while this oscillator is its zero-centred, mean-reverting form (positive when accumulation is running ahead of its recent average, negative when distribution is). The first bar only seeds the previous close; the first oscillator value lands once the 13-bar average of the line is full.

Example

use wickra_core::{Candle, Indicator, AdOscillator};

let mut indicator = AdOscillator::new();
let mut last = None;
for i in 0..80 {
    let base = 100.0 + f64::from(i);
    let candle =
        Candle::new(base, base + 2.0, base - 2.0, base + 1.0, 10.0, i64::from(i)).unwrap();
    last = indicator.update(candle);
}
assert!(last.is_some());

Implementations

impl AdOscillator

pub fn new() -> Self

Construct a new Williams A/D Oscillator.

pub const fn value(&self) -> Option<f64>

Current oscillator value if available.

Trait Implementations

impl Clone for AdOscillator

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AdOscillator

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

Formats the value using the given formatter.

impl Default for AdOscillator

fn default() -> Self

Returns the “default value” for a type.

impl Indicator for AdOscillator

type Input = Candle

Type of one input data point (typically f64 for a price, or Candle / Tick).

type Output = f64

Type of one output value.

fn update(&mut self, candle: Candle) -> Option<f64>

Feed one new data point into the indicator and return the freshly computed output, or None if there is no value for this input.

fn reset(&mut self)

Reset all internal state, leaving the indicator equivalent to a freshly constructed instance with the same parameters.

fn warmup_period(&self) -> usize

Number of inputs required before the first non-None output can be produced.

fn is_ready(&self) -> bool

Whether the indicator has emitted at least one value since the last reset.

fn name(&self) -> &'static str

Stable, human-readable indicator name. Used by chaining and diagnostics.

fn batch_nan_into(&mut self, inputs: &[Self::Input], out: &mut [f64])

where Self::Input: Copy, Self::Output: Into<f64>,

Run the indicator over inputs, writing one output per input into the caller-owned out buffer (NaN where update returns None). It exists for every indicator whose output converts to an f64; the batch pipelines use it for the scalar f64 -> f64 ones.

fn batch_fast_into(&mut self, inputs: &[Self::Input], out: &mut [f64])

where Self::Input: Copy, Self::Output: Into<f64>,

Opt-in fast batch: like batch_nan_into, but an indicator with a vectorised kernel may reassociate its arithmetic to run it in SIMD lanes. Each value then agrees with the exact batch to within the tolerance the indicator documents (a few units in the last place), not bit for bit; warmup positions, NaN placement and the output length are identical. The kernels are deterministic: the same input produces the same bits on every platform, with or without SIMD hardware.