Struct ZeroLagMacd 

pub struct ZeroLagMacd { /* private fields */ }

Zero-Lag MACD — the standard MACD topology with ZLEMA substituted for EMA everywhere. ZLEMA’s de-lagged construction makes the MACD line react faster to trend changes at the cost of slightly noisier readings.

macd_t      = ZLEMA(close, fast)_t − ZLEMA(close, slow)_t
signal_t    = ZLEMA(macd, signal_period)_t
histogram_t = macd_t − signal_t

Default parameters mirror MACD: (fast = 12, slow = 26, signal = 9). fast must be strictly less than slow.

Example

use wickra_core::{Indicator, ZeroLagMacd};

let mut zmacd = ZeroLagMacd::classic();
let mut last = None;
for i in 0..120 {
    last = zmacd.update(100.0 + f64::from(i));
}
assert!(last.is_some());

Implementations

impl ZeroLagMacd

pub fn new(fast: usize, slow: usize, signal: usize) -> Result<Self>

Errors

• Error::PeriodZero if any period is zero.
• Error::InvalidPeriod if fast >= slow.

pub fn classic() -> Self

MACD-style defaults: (fast = 12, slow = 26, signal = 9).

pub const fn periods(&self) -> (usize, usize, usize)

Configured (fast, slow, signal).

Trait Implementations

impl Clone for ZeroLagMacd

fn clone(&self) -> ZeroLagMacd

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ZeroLagMacd

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

Formats the value using the given formatter.

impl Indicator for ZeroLagMacd

type Input = f64

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

type Output = ZeroLagMacdOutput

Type of one output value.

fn update(&mut self, input: f64) -> Option<ZeroLagMacdOutput>

Feed one new data point into the indicator and return the freshly computed output, or None if the indicator is still warming up.

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.