Enum ErrorsTolerance 

pub enum ErrorsTolerance<RealType: RealScalar> {
    NegativeValue {
        value: RealType,
        backtrace: Backtrace,
    },
}

Error type for tolerance validation failures.

This enum provides detailed error information when attempting to construct tolerance types (AbsoluteTolerance<T> and RelativeTolerance<T>) with invalid input values.

Error Variants

• ErrorsTolerance::NegativeValue: The input value was negative, which violates the non-negativity constraint required for all tolerance values.

Examples

use num_valid::scalars::{AbsoluteTolerance, ErrorsTolerance};
use try_create::TryNew;

// Negative values are rejected
match AbsoluteTolerance::try_new(-1e-6_f64) {
    Err(ErrorsTolerance::NegativeValue { value, .. }) => {
        println!("Rejected negative tolerance: {}", value);
        assert_eq!(value, -1e-6);
    }
    _ => unreachable!(),
}

Backtrace Support

The error includes backtrace information when the backtrace feature is enabled, which can aid in debugging by showing where the invalid value originated.

Variants

NegativeValue

The input value was negative (must be ≥ 0).

Fields

value: RealType

The negative value that was rejected.

backtrace: Backtrace

Captured backtrace for debugging.

Trait Implementations

impl<RealType: Debug + RealScalar> Debug for ErrorsTolerance<RealType>

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

Formats the value using the given formatter.

impl<RealType> Display for ErrorsTolerance<RealType>

where RealType: Display + RealScalar,

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

Formats the value using the given formatter.

impl<RealType: RealScalar> Error for ErrorsTolerance<RealType>

where Self: Debug + Display,

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

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

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

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