Enum CalculusError 

pub enum CalculusError {
    NonFinitePoint {
        name: &'static str,
        value: f64,
    },
    NonFiniteBound {
        bound: &'static str,
        value: f64,
    },
    NonFiniteStep(f64),
    NonPositiveStep(f64),
    NonFiniteTolerance(f64),
    NegativeTolerance(f64),
    ZeroSubintervals,
    OddSubintervalCount(usize),
    NonFiniteEvaluation {
        input: f64,
        value: f64,
    },
    LimitMismatch {
        left: f64,
        right: f64,
        tolerance: f64,
    },
}

Errors returned by numerical-calculus helpers.

Variants

NonFinitePoint

A sample point or evaluation point must be finite.

Fields

name: &'static str

The name of the point that rejected the value.

value: f64

The invalid value.

NonFiniteBound

An integration bound must be finite.

Fields

bound: &'static str

The bound name that rejected the value.

value: f64

The invalid value.

NonFiniteStep(f64)

A finite-difference or limit step must be finite.

NonPositiveStep(f64)

A finite-difference or limit step must be positive.

NonFiniteTolerance(f64)

A limit tolerance must be finite.

NegativeTolerance(f64)

A limit tolerance must not be negative.

ZeroSubintervals

The number of subintervals must be positive.

OddSubintervalCount(usize)

Simpson integration requires an even number of subintervals.

NonFiniteEvaluation

Function evaluation produced NaN or infinity.

Fields

input: f64

The sample point that produced the invalid value.

value: f64

The invalid evaluation result.

LimitMismatch

The left and right limit samples disagreed by more than tolerance.

Fields

left: f64

The left-hand sample.

right: f64

The right-hand sample.

tolerance: f64

The accepted absolute tolerance.

Trait Implementations

impl Clone for CalculusError

fn clone(&self) -> CalculusError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CalculusError

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

Formats the value using the given formatter.

impl Display for CalculusError

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

Formats the value using the given formatter.

impl Error for CalculusError

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 PartialEq for CalculusError

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

impl StructuralPartialEq for CalculusError