Enum AnsError 

pub enum AnsError {
    InvalidPrecision {
        precision_bits: u32,
    },
    EmptyAlphabet,
    InvalidSymbol {
        symbol: u32,
        alphabet_size: usize,
    },
    ZeroFrequency {
        symbol: u32,
    },
    InvalidTable(String),
    InvalidState {
        state: u32,
        min_state: u32,
    },
    TruncatedInput {
        available: usize,
        needed: usize,
    },
}

Errors for rANS operations.

Variants

InvalidPrecision

precision_bits was outside the valid range 1..=20.

Fields

precision_bits: u32

EmptyAlphabet

The counts slice passed to FrequencyTable::from_counts was empty.

InvalidSymbol

A symbol index exceeded the alphabet size during encoding.

Fields

symbol: u32

alphabet_size: usize

ZeroFrequency

A symbol with zero frequency was encountered during encoding.

Fields

symbol: u32

InvalidTable(String)

The frequency normalization step could not produce a valid table.

InvalidState

The rANS state read from the byte stream was below RANS_L.

Fields

state: u32

min_state: u32

TruncatedInput

The byte stream was shorter than expected during decoding.

Fields

available: usize

Bytes available.

needed: usize

Minimum bytes needed.

Trait Implementations

impl Debug for AnsError

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

Formats the value using the given formatter.

impl Display for AnsError

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

Formats the value using the given formatter.

impl Error for AnsError

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 AnsError

fn eq(&self, other: &AnsError) -> 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 Eq for AnsError

impl StructuralPartialEq for AnsError