Enum RemlError 

pub enum RemlError {
    DimensionMismatch {
        reason: String,
    },
    NonFiniteValue {
        reason: String,
    },
    InvalidKernelMode {
        reason: String,
    },
    ContractViolation {
        reason: String,
    },
}

Typed failure categories raised by the unified REML/LAML evaluator and its outer-Hessian / penalty-root helpers.

Each variant carries a pre-formatted reason string so that the Display impl is byte-equivalent to the original format!(...) text the module emitted before the typed-error migration. External signatures remain Result<_, String>; the boundary conversion goes through From<RemlError> for String.

Variants

DimensionMismatch

A length / shape disagreement between two views that should match (penalty coords vs Hessian dim, residual length vs operator dim, precomputed-correction count vs total, etc.).

Fields

reason: String

NonFiniteValue

A scalar / vector / matrix entry that must be finite came back NaN or ±∞ (cost, gradient entry, Hessian entry, cross-trace entry).

Fields

reason: String

InvalidKernelMode

A correction path was invoked against an operator kernel that does not support it (scalar-only correction on a non-scalar kernel, callback correction on a non-callback kernel).

Fields

reason: String

ContractViolation

A caller violated the evaluator contract. These are not numerical failures; they mean an upstream solver presented an inner state with insufficient certificates for the requested derivative surface.

Fields

reason: String

Trait Implementations

impl Clone for RemlError

fn clone(&self) -> RemlError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RemlError

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

Formats the value using the given formatter.

impl Display for RemlError

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

Formats the value using the given formatter.

impl Error for RemlError

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 From<RemlError> for String

fn from(err: RemlError) -> String

Converts to this type from the input type.