Enum DecimalError 

pub enum DecimalError {
    ScaleTooLarge {
        scale: u32,
        max: u8,
    },
    PrecisionOverflow {
        mantissa: i128,
        digits: u8,
    },
    InexactRescale {
        value: String,
        from: u8,
        to: u8,
    },
    Overflow,
    Parse {
        input: String,
        reason: &'static str,
    },
}

Why a Decimal could not be constructed, parsed or rescaled.

Variants

ScaleTooLarge

The scale exceeds MAX_DECIMAL_SCALE.

Fields

scale: u32

The requested scale.

max: u8

MAX_DECIMAL_SCALE.

PrecisionOverflow

The mantissa needs more than DECIMAL_PRECISION significant digits.

Fields

mantissa: i128

The offending mantissa.

digits: u8

DECIMAL_PRECISION.

InexactRescale

Narrowing the scale would have dropped a non-zero digit.

Fields

value: String

The value that could not be rescaled, rendered exactly.

from: u8

Its current scale.

to: u8

The requested scale.

Overflow

An arithmetic result does not fit in 38 significant digits.

Parse

The text is not a decimal literal.

Fields

input: String

The text that failed to parse.

reason: &'static str

What was wrong with it.

Trait Implementations

impl Clone for DecimalError

fn clone(&self) -> DecimalError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DecimalError

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

Formats the value using the given formatter.

impl Display for DecimalError

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

Formats the value using the given formatter.

impl Eq for DecimalError

impl Error for DecimalError

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 DecimalError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DecimalError