Struct StdDev 

pub struct StdDev(/* private fields */);

Standard deviation multiplier for Bollinger Bands.

Wraps a positive, non-NaN f64. The constructor panics if the value is zero, negative, or NaN.

Defaults to 2.0 (the standard Bollinger Bands setting).

Implements Eq and Hash via bit-level comparison, which is safe because NaN is rejected at construction.

Implementations

impl StdDev

pub fn new(value: f64) -> Self

Creates a new standard deviation multiplier.

Panics

Panics if value is zero, negative, or NaN.

pub fn value(self) -> f64

Trait Implementations

impl Clone for StdDev

fn clone(&self) -> StdDev

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StdDev

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

Formats the value using the given formatter.

impl Default for StdDev

fn default() -> Self

Returns the “default value” for a type.

impl Hash for StdDev

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for StdDev

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for StdDev

impl Eq for StdDev