Enum Error 

#[non_exhaustive]
pub enum Error {
    EmptyTally,
    LengthMismatch {
        expected: usize,
        got: usize,
    },
    ZeroMaxFlux {
        energy_group: usize,
    },
    EmptyPdf,
    NegativePdf {
        index: usize,
        value: f64,
    },
    NonFinitePdf {
        index: usize,
    },
    ZeroSumPdf,
    NegativeTally {
        index: usize,
        value: f64,
    },
    NonFiniteTally {
        field: &'static str,
        index: usize,
    },
    ZeroVarianceDim {
        dim: usize,
    },
    BadDraw {
        value: f64,
    },
    NegativeWindow {
        index: usize,
        value: f64,
    },
    NonFiniteWindow {
        index: usize,
    },
    BadEnergyBounds {
        index: usize,
    },
    BadMeshBounds {
        axis: usize,
        index: usize,
    },
    BadEmissionOption {
        option: &'static str,
        value: String,
        detail: &'static str,
    },
    Wwinp(String),
}

Errors raised by variance-reduction tools.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

EmptyTally

Tally carries no volume elements.

LengthMismatch

A requested array has the wrong length.

Fields

expected: usize

Expected element count.

got: usize

Actual element count.

ZeroMaxFlux

Every flux value feeding one energy bin is non-positive, so the MAGIC normalization value / (2 * max) would divide by zero. (Rather than silently emitting inf/nan, this is an error.)

Fields

energy_group: usize

Index of the energy bin with no positive flux.

EmptyPdf

PDF input is empty.

NegativePdf

PDF contains a negative entry.

Fields

index: usize

Index of the negative entry.

value: f64

The offending value.

NonFinitePdf

PDF contains a non-finite (NaN/infinite) entry.

Fields

index: usize

Index of the non-finite entry.

ZeroSumPdf

PDF sums to zero (or negatively); cannot normalize.

NegativeTally

Tally or user density contains a negative value.

Fields

index: usize

Index of the negative value.

value: f64

The offending value.

NonFiniteTally

Tally array contains a non-finite (NaN/infinite) value.

Fields

field: &'static str

Name of the tally field holding the value.

index: usize

Index of the non-finite entry.

ZeroVarianceDim

A KDE Silverman dimension has zero variance (a zero bandwidth is a delta spike, never a density); use an explicit fixed width instead.

Fields

dim: usize

Index of the zero-variance dimension.

BadDraw

A KDE draw uniform falls outside [0, 1).

Fields

value: f64

The offending uniform value.

NegativeWindow

A weight-window lower bound is negative and has no spelling in either target format (non-positive windows are inert; negative never is).

Fields

index: usize

Flat index into MagicOutput::lower_bounds_ww.

value: f64

The offending value.

NonFiniteWindow

A weight-window lower bound is NaN or infinite.

Fields

index: usize

Flat index into MagicOutput::lower_bounds_ww.

BadEnergyBounds

Energy upper bounds are empty, non-finite, non-positive, or not strictly increasing, so the window energy grid is ill-defined.

Fields

index: usize

Index of the offending bound.

BadMeshBounds

Mesh bounds have fewer than two entries, are non-finite, or are not strictly increasing.

Fields

axis: usize

Axis index (0 = x, 1 = y, 2 = z).

index: usize

Index of the offending bound.

BadEmissionOption

An emission tuning parameter or card token falls outside the range the target code enforces when reading the file, or cannot be interpolated into the emitted card safely.

Fields

option: &'static str

Parameter name (upper_bound_ratio, survival_ratio, max_split, weight_cutoff, name, file, energy_bounds, upper_ww_bounds).

value: String

The offending value.

detail: &'static str

Why it was rejected.

Wwinp(String)

The WWINP writer in nucleide-mcnp-io refused the assembled file.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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 Error

fn eq(&self, other: &Error) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Error