Documentation

Options available for customizing GLPK operations. This also determines which kind of solving is performed -- relaxed LP, or MIP.

Constructors

SimplexOpts
Fields msgLev :: MsgLev tmLim :: !Int presolve :: Bool
MipOpts
Fields msgLev :: MsgLev tmLim :: !Int presolve :: Bool brTech :: BranchingTechnique btTech :: BacktrackTechnique ppTech :: Preprocessing fpHeur :: Bool cuts :: [Cuts] mipGap :: !Double

data MsgLev Source

Constructors

MsgOff
MsgErr
MsgOn
MsgAll

data BranchingTechnique Source

Constructors

FirstFrac
LastFrac
MostFrac
DrTom
HybridP

data BacktrackTechnique Source

Constructors

DepthFirst
BreadthFirst
LocBound
ProjHeur

data Preprocessing Source

Constructors

NoPre
RootPre
AllPre

data Cuts Source

Constructors

GMI
MIR
Cov
Clq

Instances

Eq Cuts

simplexDefaults :: GLPOpts Source

mipDefaults :: GLPOpts Source

glpSolveVars :: (Ord v, Show v, Real c) => GLPOpts -> LP v c -> IO (ReturnCode, Maybe (Double, Map v Double))Source

Solves the linear or mixed integer programming problem. Returns the value of the objective function, and the values of the variables.

glpSolveAll :: (Ord v, Show v, Real c) => GLPOpts -> LP v c -> IO (ReturnCode, Maybe (Double, Map v Double, Map String Double))Source

Solves the linear or mixed integer programming problem. Returns the value of the objective function, the values of the variables, and the values of any labeled rows.

Success
InvalidBasis
SingularMatrix
IllConditionedMatrix
InvalidBounds
SolverFailed
ObjLowerLimReached
ObjUpperLimReached
IterLimReached
TimeLimReached
NoPrimalFeasible
NoDualFeasible
RootLPOptMissing
SearchTerminated
MipGapTolReached
NoPrimDualFeasSolution
NoConvergence
NumericalInstability
InvalidData
ResultOutOfRange