Enum TerminationStatus 

pub enum TerminationStatus {
    Optimal,
    LocallyOptimal,
    Infeasible,
    Unbounded,
    InfeasibleOrUnbounded,
    IterationLimit,
    TimeLimit,
    NodeLimit,
    Interrupted,
    NumericError,
    NotSolved,
    Other(String),
}

Why a solver stopped, independent of whether a usable point was returned.

Variants

Optimal

Proven globally optimal.

LocallyOptimal

A local optimum.

Infeasible

Proven infeasible.

Unbounded

Proven unbounded.

InfeasibleOrUnbounded

Infeasible or unbounded, the backend can’t differentiate.

IterationLimit

Stopped at an iteration limit.

TimeLimit

Stopped at a time limit.

NodeLimit

Stopped at a branch-and-bound node limit.

Interrupted

Stopped by an external interrupt or solver-specific user limit.

NumericError

The solver hit a numerical problem (singular basis, presolve error, …).

NotSolved

No solve has been attempted yet.

Other(String)

A backend status with no direct mapping. Carries the raw label.

Implementations

impl TerminationStatus

pub fn admits_primal(&self) -> bool

Whether a solver that stopped for this reason may still return a usable primal point. true for optimality and for the various limits (which keep the best incumbent found so far), false for infeasible/unbounded/ error/unsolved states.

Trait Implementations

impl Clone for TerminationStatus

fn clone(&self) -> TerminationStatus

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TerminationStatus

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

Formats the value using the given formatter.

impl Eq for TerminationStatus

impl PartialEq for TerminationStatus

fn eq(&self, other: &TerminationStatus) -> 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 StructuralPartialEq for TerminationStatus