Enum ConvertError 

pub enum ConvertError {
    JwHasNoRawPreimage {
        beta: f64,
    },
    NegativeWingSlope {
        name: &'static str,
        value: f64,
    },
    NonPositiveAtmVariance {
        w: f64,
    },
    DegenerateJw,
    Param(ParamError),
}

Error returned when a parametrisation conversion has no valid pre-image.

The Raw <-> Jump-Wings map is bijective only on a subset of JW space: a JW tuple with |beta| > 1 (where beta = rho - 2*psi*sqrt(w)/b) does not correspond to any raw SVI slice — see MATH.md §4.

Examples

use regit_svi::errors::ConvertError;

let err = ConvertError::JwHasNoRawPreimage { beta: 1.4 };
let msg = format!("{err}");
assert!(msg.contains("1.4"));

Variants

JwHasNoRawPreimage

The Jump-Wings tuple yields |beta| > 1, so no raw SVI slice exists.

Fields

beta: f64

The computed value of beta.

NegativeWingSlope

A wing slope p_t or c_t is negative, which has no raw pre-image.

Fields

name: &'static str

Human-readable name of the offending wing slope.

value: f64

The offending value.

NonPositiveAtmVariance

The Jump-Wings ATM total variance v_t * t is not strictly positive.

Fields

w: f64

The computed ATM total variance.

DegenerateJw

A degenerate intermediate (b = 0 or c_t + p_t = 0) makes the inverse map indeterminate.

Param(ParamError)

A parameter error surfaced while constructing the converted slice.

Trait Implementations

impl Clone for ConvertError

fn clone(&self) -> ConvertError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConvertError

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

Formats the value using the given formatter.

impl Display for ConvertError

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

Formats the value using the given formatter.

impl Error for ConvertError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<ParamError> for ConvertError

fn from(e: ParamError) -> Self

Converts to this type from the input type.

impl PartialEq for ConvertError

fn eq(&self, other: &ConvertError) -> 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 ConvertError

impl StructuralPartialEq for ConvertError