-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | A GLPK backend to the math-programming library.
--   
--   Please see the README on GitHub at
--   <a>https://github.com/prsteele/math-programming-glpk#readme</a>
@package math-programming-glpk
@version 0.4.0


-- | This module contains the full definitions backing the simplified API
--   exposed in <a>Glpk</a>.
module Math.Programming.Glpk.Internal

-- | An environment to solve math programs using GLPK.
newtype Glpk a
Glpk :: ExceptT GlpkError (ReaderT GlpkEnv IO) a -> Glpk a
[_runGlpk] :: Glpk a -> ExceptT GlpkError (ReaderT GlpkEnv IO) a
runGlpk :: Glpk a -> IO (Either GlpkError a)
data SolveType
LP :: SolveType
MIP :: SolveType
InteriorPoint :: SolveType

-- | An interface to the low-level GLPK API.
--   
--   High-level solver settings can be modified by altering the
--   <a>SimplexMethodControlParameters</a> and <a>MIPControlParameters</a>
--   values for LP and IP solves, respectively.
data GlpkEnv
GlpkEnv :: Ptr Problem -> IORef [GlpkVariable] -> IORef [GlpkConstraint] -> IORef SimplexMethodControlParameters -> IORef (MIPControlParameters Void) -> IORef (Maybe SolveType) -> GlpkEnv

-- | A pointer to the Problem object. Most GLPK routines take this as the
--   first argument.
[_glpkEnvProblem] :: GlpkEnv -> Ptr Problem

-- | The variables in the model
[_glpkVariables] :: GlpkEnv -> IORef [GlpkVariable]

-- | The constraints in the model
[_glpkConstraints] :: GlpkEnv -> IORef [GlpkConstraint]

-- | The control parameters for the simplex method
[_glpkSimplexControl] :: GlpkEnv -> IORef SimplexMethodControlParameters

-- | The control parameters for the MIP solver
[_glpkMIPControl] :: GlpkEnv -> IORef (MIPControlParameters Void)

-- | The type of the last solve. This is needed to know whether to retrieve
--   simplex, interior point, or MIP solutions.
[_glpkLastSolveType] :: GlpkEnv -> IORef (Maybe SolveType)
data NamedRef a
NamedRef :: Int -> IORef a -> NamedRef a
[namedRefId] :: NamedRef a -> Int
[namedRefRef] :: NamedRef a -> IORef a
type GlpkConstraint = NamedRef Row
type GlpkVariable = NamedRef Column
askProblem :: Glpk (Ptr Problem)
askVariablesRef :: Glpk (IORef [GlpkVariable])
askConstraintsRef :: Glpk (IORef [GlpkConstraint])
register :: Glpk (IORef [NamedRef a]) -> NamedRef a -> Glpk ()
unregister :: Enum a => Glpk (IORef [NamedRef a]) -> NamedRef a -> Glpk ()
data GlpkError
UnknownVariable :: GlpkVariable -> GlpkError
UnknownCode :: String -> CInt -> GlpkError
readColumn :: Variable Glpk -> Glpk Column
readRow :: Constraint Glpk -> Glpk Row
addVariable' :: Glpk (Variable Glpk)
setVariableName' :: Variable Glpk -> String -> Glpk ()
getVariableName' :: Variable Glpk -> Glpk String
removeVariable' :: Variable Glpk -> Glpk ()
addConstraint' :: Inequality (LinearExpression Double (Variable Glpk)) -> Glpk (Constraint Glpk)
setConstraintName' :: Constraint Glpk -> String -> Glpk ()
getConstraintName' :: Constraint Glpk -> Glpk String
getDualValue' :: Constraint Glpk -> Glpk Double
removeConstraint' :: Constraint Glpk -> Glpk ()
addObjective' :: LinearExpression Double (Variable Glpk) -> Glpk (Objective Glpk)
getObjectiveName' :: Objective Glpk -> Glpk String
setObjectiveName' :: Objective Glpk -> String -> Glpk ()
getObjectiveSense' :: Objective Glpk -> Glpk Sense
setObjectiveSense' :: Objective Glpk -> Sense -> Glpk ()
getObjectiveValue' :: Objective Glpk -> Glpk Double
optimizeLP' :: Glpk SolutionStatus
optimizeIP' :: Glpk SolutionStatus
setVariableBounds' :: Variable Glpk -> Bounds Double -> Glpk ()
getVariableBounds' :: Variable Glpk -> Glpk (Bounds Double)
setVariableDomain' :: Variable Glpk -> Domain -> Glpk ()
getVariableDomain' :: Variable Glpk -> Glpk Domain
getVariableValue' :: Variable Glpk -> Glpk Double
getTimeout' :: RealFrac a => Glpk a
setTimeout' :: RealFrac a => a -> Glpk ()
setRelativeMIPGap' :: RealFrac a => a -> Glpk ()
getRelativeMIPGap' :: RealFrac a => Glpk a
solutionStatus :: GlpkSolutionStatus -> SolutionStatus

-- | Write out the current formulation to a file.
writeFormulation :: FilePath -> Glpk ()
maxCDouble :: CDouble
instance Control.Monad.Error.Class.MonadError Math.Programming.Glpk.Internal.GlpkError Math.Programming.Glpk.Internal.Glpk
instance Control.Monad.Reader.Class.MonadReader Math.Programming.Glpk.Internal.GlpkEnv Math.Programming.Glpk.Internal.Glpk
instance Control.Monad.IO.Class.MonadIO Math.Programming.Glpk.Internal.Glpk
instance GHC.Base.Monad Math.Programming.Glpk.Internal.Glpk
instance GHC.Base.Applicative Math.Programming.Glpk.Internal.Glpk
instance GHC.Base.Functor Math.Programming.Glpk.Internal.Glpk
instance GHC.Show.Show Math.Programming.Glpk.Internal.GlpkError
instance GHC.Show.Show (Math.Programming.Types.Constraint Math.Programming.Glpk.Internal.Glpk)
instance GHC.Classes.Ord (Math.Programming.Types.Constraint Math.Programming.Glpk.Internal.Glpk)
instance GHC.Classes.Eq (Math.Programming.Types.Constraint Math.Programming.Glpk.Internal.Glpk)
instance GHC.Show.Show (Math.Programming.Types.Variable Math.Programming.Glpk.Internal.Glpk)
instance GHC.Classes.Ord (Math.Programming.Types.Variable Math.Programming.Glpk.Internal.Glpk)
instance GHC.Classes.Eq (Math.Programming.Types.Variable Math.Programming.Glpk.Internal.Glpk)
instance Math.Programming.Types.LPMonad Math.Programming.Glpk.Internal.Glpk
instance Math.Programming.Types.IPMonad Math.Programming.Glpk.Internal.Glpk
instance GHC.Classes.Eq (Math.Programming.Glpk.Internal.NamedRef a)
instance GHC.Classes.Ord (Math.Programming.Glpk.Internal.NamedRef a)
instance GHC.Show.Show (Math.Programming.Glpk.Internal.NamedRef a)


-- | A <a>GLPK</a> backend to the <a>Programming</a> library.
--   
--   This package allows both linear and mixed-integer programs to be
--   solved.
module Math.Programming.Glpk

-- | An environment to solve math programs using GLPK.
data Glpk a
runGlpk :: Glpk a -> IO (Either GlpkError a)

-- | Write out the current formulation to a file.
writeFormulation :: FilePath -> Glpk ()

-- | An interface to the low-level GLPK API.
--   
--   High-level solver settings can be modified by altering the
--   <a>SimplexMethodControlParameters</a> and <a>MIPControlParameters</a>
--   values for LP and IP solves, respectively.
data GlpkEnv
data GlpkError