Enum gurobi::Where

pub enum Where {
    Polling,
    PreSolve {
        coldel: i32,
        rowdel: i32,
        senchg: i32,
        bndchg: i32,
        coecfg: i32,
    },
    Simplex {
        itrcnt: f64,
        objval: f64,
        priminf: f64,
        dualinf: f64,
        ispert: i32,
    },
    MIP {
        objbst: f64,
        objbnd: f64,
        nodcnt: f64,
        solcnt: f64,
        cutcnt: i32,
        nodleft: f64,
        itrcnt: f64,
    },
    MIPSol {
        obj: f64,
        objbst: f64,
        objbnd: f64,
        nodcnt: f64,
        solcnt: f64,
    },
    MIPNode {
        status: i32,
        objbst: f64,
        objbnd: f64,
        nodcnt: f64,
        solcnt: i32,
    },
    Message(String),
    Barrier {
        itrcnt: i32,
        primobj: f64,
        dualobj: f64,
        priminf: f64,
        dualinf: f64,
        compl: f64,
    },
}

Location where the callback called

If you want to get more information, see official manual.

Variants

Polling

Periodic polling callback

PreSolve

Currently performing presolve

Fields of PreSolve

coldel: i32	The number of columns removed by presolve to this point.
rowdel: i32	The number of rows removed by presolve to this point.
senchg: i32	The number of constraint senses changed by presolve to this point.
bndchg: i32	The number of variable bounds changed by presolve to this point.
coecfg: i32	The number of coefficients changed by presolve to this point.

Simplex

Currently in simplex

Fields of Simplex

itrcnt: f64	Current simplex iteration count.
objval: f64	Current simplex objective value.
priminf: f64	Current primal infeasibility.
dualinf: f64	Current dual infeasibility.
ispert: i32	Is problem current perturbed?

MIP

Currently in MIP

Fields of MIP

objbst: f64	Current best objective.
objbnd: f64	Current best objective bound.
nodcnt: f64	Current explored node count.
solcnt: f64	Current count of feasible solutions found.
cutcnt: i32	Current count of cutting planes applied.
nodleft: f64	Current unexplored node count.
itrcnt: f64	Current simplex iteration count.

MIPSol

Found a new MIP incumbent

Fields of MIPSol

obj: f64	Objective value for new solution.
objbst: f64	Current best objective.
objbnd: f64	Current best objective bound.
nodcnt: f64	Current explored node count.
solcnt: f64	Current count of feasible solutions found.

MIPNode

Currently exploring a MIP node

Fields of MIPNode

status: i32	Optimization status of current MIP node (see the Status Code section for further information).
objbst: f64	Current best objective.
objbnd: f64	Current best objective bound.
nodcnt: f64	Current explored node count.
solcnt: i32	Current count of feasible solutions found.

Message(String)

Printing a log message

Barrier

Currently in barrier.

Fields of Barrier

itrcnt: i32	Current barrier iteration count.
primobj: f64	Primal objective value for current barrier iterate.
dualobj: f64	Dual objective value for current barrier iterate.
priminf: f64	Primal infeasibility for current barrier iterate.
dualinf: f64	Dual infeasibility for current barrier iterate.
compl: f64	Complementarity violation for current barrier iterate.

Trait Implementations

impl Debug for Where

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

Formats the value using the given formatter.

impl Clone for Where

fn clone(&self) -> Where

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Into<i32> for Where

fn into(self) -> i32

Performs the conversion.