Enum RsolveError 

pub enum RsolveError {
    NotLinearRecurrence(String),
    NonlinearTerm,
    NonPolynomialRhs(String),
    Unsupported(String),
    InitialMismatch(String),
}

Errors from rsolve.

Variants

NotLinearRecurrence(String)

Equation shape is not a supported linear recurrence in seq_name.

NonlinearTerm

Non-constant-coefficient factor (e.g. n*f(n)).

NonPolynomialRhs(String)

Right-hand side is not a polynomial in n.

Unsupported(String)

Order or characteristic factorization outside the supported fragment.

InitialMismatch(String)

Initial values do not fix the constants (singular or wrong count).

Trait Implementations

impl AlkahestError for RsolveError

fn code(&self) -> &'static str

Stable diagnostic code, e.g. "E-DIFF-001".

fn remediation(&self) -> Option<&'static str>

Optional human-readable fix suggestion.

fn span(&self) -> Option<(usize, usize)>

Optional source span (start_byte, end_byte) within the input text.

impl Clone for RsolveError

fn clone(&self) -> RsolveError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RsolveError

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

Formats the value using the given formatter.

impl Display for RsolveError

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

Formats the value using the given formatter.

impl Error for RsolveError

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 RsolveError

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

impl StructuralPartialEq for RsolveError