Enum Method 

#[non_exhaustive]
pub enum Method {
    Simplex,
    BigM,
    TwoPhase,
    DualSimplex,
}

Which variant of the simplex method to run.

More methods (such as the dual simplex) may be added in minor releases.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Simplex

Primal simplex. Only for problems whose constraints are all <= with a non-negative right-hand side after normalization (the slacks give the starting basis).

BigM

Big-M method, with M kept symbolic (no numeric value is ever chosen).

TwoPhase

Two-phase method. Falls back to a single phase when no artificial variable is needed.

DualSimplex

Dual simplex. Every constraint is written as <= (a >= is multiplied by -1), so the slacks give a starting basis that may be infeasible (negative right-hand sides) but must be dual feasible: non-negative costs when minimizing, non-positive when maximizing, and no equality constraints. Otherwise Error::NotDualFeasible is returned.

Trait Implementations

impl Clone for Method

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Method

impl Debug for Method

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Method

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Method

impl PartialEq for Method

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Method

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Method