Enum QConstrIntAttr 

pub enum QConstrIntAttr {
    IISQConstr,
    IISQConstrForce,
}

Variants

IISQConstr

• Modifiable: No
• Type: integer (i32)

For an infeasible model, indicates whether the quadratic constraint participates in the computed Irreducible Inconsistent Subsystem (IIS). Only available after you have computed an IIS.

Reference manual.

IISQConstrForce

• Modifiable: Yes
• Type: integer (i32)

When computing an Irreducible Inconsistent Subsytem (IIS) for an infeasible model, indicates whether the quadratic constraint should be included or excluded from the IIS.

The default value of -1 lets the IIS algorithm decide.

If the attribute is set to 0, the constraint is not eligible for inclusion in the IIS.

If the attribute is set to 1, the constraint is included in the IIS and the IIS algorithm never considers the possibility of removing it.

Note that setting this attribute to 0 may make the resulting subsystem feasible (or consistent), which would then make it impossible to construct an IIS. Trying anyway will result in a GRB_ERROR_IIS_NOT_INFEASIBLE error. Similarly, setting this attribute to 1 may result in an IIS that is not irreducible. More precisely, the system would only be irreducible with respect to the model elements that have force values of -1 or 0.

See the Model.computeIIS documentation for more details.

Reference manual.

Trait Implementations

impl AsCStr for QConstrIntAttr

fn as_cstr(&self) -> &'static CStr

Represent self as a &CStr

impl Clone for QConstrIntAttr

fn clone(&self) -> QConstrIntAttr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QConstrIntAttr

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

Formats the value using the given formatter.

impl FromCStr for QConstrIntAttr

type Err = &'static str

The error type returned if parsing fails.

fn from_cstr(s: &CStr) -> Result<Self, Self::Err>

Parse the &CStr for an instance of Self.

impl Hash for QConstrIntAttr

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for QConstrIntAttr

fn eq(&self, other: &QConstrIntAttr) -> 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 Copy for QConstrIntAttr

impl Eq for QConstrIntAttr

impl StructuralPartialEq for QConstrIntAttr