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TerminationStatus

oximo_solver::status

Enum TerminationStatus 

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pub enum TerminationStatus {

Show 19 variants    Optimal,
    LocallyOptimal,
    Feasible,
    Infeasible,
    Unbounded,
    InfeasibleOrUnbounded,
    IterationLimit,
    TimeLimit,
    NodeLimit,
    ObjectiveLimit,
    SolutionLimit,
    WorkLimit,
    MemoryLimit,
    LocallyInfeasible,
    LicenseError,
    Interrupted,
    NumericError,
    NotSolved,
    Other(String),

}
Expand description

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

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Optimal

Proven globally optimal.

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LocallyOptimal

A local optimum.

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Feasible

Stopped with a feasible point, without any optimality claim.

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Infeasible

Proven infeasible.

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Unbounded

Proven unbounded.

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InfeasibleOrUnbounded

Infeasible or unbounded, the backend can’t differentiate.

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IterationLimit

Stopped at an iteration limit.

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TimeLimit

Stopped at a time limit.

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NodeLimit

Stopped at a branch-and-bound node limit.

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ObjectiveLimit

Stopped after reaching an objective cutoff or target.

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SolutionLimit

Stopped after finding the requested number of solutions.

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WorkLimit

Stopped at a solver-defined work limit.

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MemoryLimit

Stopped because the solver exhausted its memory limit.

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LocallyInfeasible

Converged to a locally infeasible point.

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LicenseError

The solver could not run because no usable license was available.

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Interrupted

Stopped by a genuine user or external interrupt.

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NumericError

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

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NotSolved

No solve has been attempted yet.

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Other(String)

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

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impl TerminationStatus

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pub fn admits_primal(&self) -> bool

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

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pub fn is_infeasible(&self) -> bool

Whether this status proves the model infeasible, so a conflict/IIS diagnosis is meaningful. Treats the ambiguous InfeasibleOrUnbounded as infeasible.

Trait Implementations§

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impl Clone for TerminationStatus

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fn clone(&self) -> TerminationStatus

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for TerminationStatus

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

Formats the value using the given formatter. Read more
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impl Eq for TerminationStatus

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impl PartialEq for TerminationStatus

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for TerminationStatus

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.