Struct ConstantCurve

pub struct ConstantCurve { /* private fields */ }

A representation of a flat demand curve supporting interval, half-line, and full-line trading domains

A constant curve represents a fixed price for trades within a specified rate interval. This can be used to express indifference to (potentially unbounded) trade rates at a specific price.

The sign convention follows flow trading standards:

• min_rate ≤ 0 (non-positive): maximum selling rate
• max_rate ≥ 0 (non-negative): maximum buying rate

Implementations

impl ConstantCurve

pub unsafe fn new_unchecked(min_rate: f64, max_rate: f64, price: f64) -> Self

Creates a new constant constraint without validation

Safety

This function is unsafe because it bypasses validation of rates and price. It should only be used when the caller can guarantee the values are valid.

pub fn new( min_rate: Option<f64>, max_rate: Option<f64>, price: f64, ) -> Result<Self, ConstantCurveError>

Creates a new constant curve with validation

pub fn domain(&self) -> (f64, f64)

Return the domain of the demand curve (min and max rates)

pub fn points(self) -> Vec<Point>

Returns the curve as a vector of points

For a constant curve, this returns one or two points:

• If min_rate equals max_rate: returns a single point
• Otherwise: returns two points at the min and max rates, both with the same price

Trait Implementations

impl Clone for ConstantCurve

fn clone(&self) -> ConstantCurve

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConstantCurve

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

Formats the value using the given formatter.

impl From<ConstantCurve> for DemandCurve

fn from(value: ConstantCurve) -> Self

Converts to this type from the input type.

impl Into<ConstantCurveDto> for ConstantCurve

fn into(self) -> ConstantCurveDto

Converts this type into the (usually inferred) input type.

impl TryFrom<ConstantCurveDto> for ConstantCurve

type Error = ConstantCurveError

The type returned in the event of a conversion error.

fn try_from(value: ConstantCurveDto) -> Result<Self, Self::Error>

Performs the conversion.