Enum PeriodEndModel 

pub enum PeriodEndModel {
    FlatMultiplier {
        multiplier: f64,
    },
    ExponentialAcceleration {
        start_day: i32,
        base_multiplier: f64,
        peak_multiplier: f64,
        decay_rate: f64,
    },
    DailyProfile {
        profile: HashMap<i32, f64>,
        interpolation: InterpolationMethod,
    },
    ExtendedCrunch {
        start_day: i32,
        sustained_high_days: i32,
        peak_multiplier: f64,
        ramp_up_days: i32,
    },
}

Model for period-end volume patterns.

Variants

FlatMultiplier

Simple flat multiplier (legacy behavior).

Fields

multiplier: f64

Volume multiplier during period-end

ExponentialAcceleration

Exponential acceleration curve approaching period end.

Fields

start_day: i32

Days before period end to start acceleration (negative, e.g., -10)

base_multiplier: f64

Multiplier at the start of acceleration

peak_multiplier: f64

Peak multiplier on the last day

decay_rate: f64

Decay rate (higher = steeper curve, typically 0.1-0.5)

DailyProfile

Custom daily profile with explicit multipliers.

Fields

profile: HashMap<i32, f64>

Map of days-to-close -> multiplier (e.g., -5 -> 1.5, -1 -> 3.0)

interpolation: InterpolationMethod

Interpolation method for days not in profile

ExtendedCrunch

Extended crunch period with sustained high volume.

Fields

start_day: i32

Days before period end to start (negative, e.g., -10)

sustained_high_days: i32

Number of days at sustained high volume

peak_multiplier: f64

Peak multiplier during crunch

ramp_up_days: i32

Ramp-up rate (days from start to peak)

Implementations

impl PeriodEndModel

pub fn get_multiplier(&self, days_to_end: i32) -> f64

Calculate the multiplier for a given number of days to period end.

days_to_end is negative or zero (0 = last day, -1 = day before, etc.)

pub fn flat(multiplier: f64) -> Self

Create a flat multiplier model.

pub fn exponential_accounting() -> Self

Create an exponential acceleration model with typical accounting close parameters.

pub fn custom_profile(profile: HashMap<i32, f64>) -> Self

Create a custom daily profile.

Trait Implementations

impl Clone for PeriodEndModel

fn clone(&self) -> PeriodEndModel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PeriodEndModel

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

Formats the value using the given formatter.

impl Default for PeriodEndModel

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PeriodEndModel

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for PeriodEndModel

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.