Enum KktError 

pub enum KktError {
    NotSymmetric,
    ZeroPivot {
        position: usize,
    },
    NotFinite {
        position: usize,
    },
    WrongInertia {
        found: Inertia,
        expected: Inertia,
    },
    Structure(SparseError),
    Backend(&'static str),
}

Error raised by a crate::KktSolver (Chapter 5.14).

As in LuError, structural problems of the input are reported in a KktError::Structure carrying the SparseError of the container check, so Eq is not derived (the SparseError::InvalidValue variant holds an f64).

Variants

NotSymmetric

The pattern is not square, or it stores entries on both sides of the diagonal without being structurally symmetric (invariant (K1) of Chapter 5.14).

ZeroPivot

A pivot of the factorization is exactly zero (or not finite) and no dynamic regularization was asked for (or it could not lift it); position is the row of K (original numbering) whose pivot failed.

Fields

position: usize

Row of K, in the caller’s numbering.

NotFinite

The factorization produced a NaN or an infinity (an overflow of the elimination; step K3′ and invariant (S10) of Chapter 5.14); position is the row of K (original numbering) of the first column of the factor holding one.

Fields

position: usize

Row of K, in the caller’s numbering.

WrongInertia

The inertia of the factorization differs from the one the form requires (invariant (S6)).

Fields

found: Inertia

The inertia of the computed factorization.

expected: Inertia

The inertia crate::KktForm requires.

Structure(SparseError)

The matrix does not satisfy the container invariants (S1), its dimensions do not match the form or the analysis, or its lower triangle has an entry outside the analyzed pattern.

Backend(&'static str)

The backend ran out of memory or refused the problem.

Trait Implementations

impl Clone for KktError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KktError

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

Formats the value using the given formatter.

impl Display for KktError

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

Formats the value using the given formatter.

impl Error for KktError

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<SparseError> for KktError

fn from(e: SparseError) -> Self

Converts to this type from the input type.

impl PartialEq for KktError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for KktError