slack_doubleton_action Class Reference

Convert an explicit bound constraint to a column bound. More...

#include <CoinPresolveSingleton.hpp>

Inheritance diagram for slack_doubleton_action:

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Collaboration diagram for slack_doubleton_action:

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List of all members.

Classes
struct	action
Public Member Functions
const char *	name () const
	A name for debug printing.
void	postsolve (CoinPostsolveMatrix *prob) const
	Apply the postsolve transformation for this particular presolve action.
	~slack_doubleton_action ()
Static Public Member Functions
static const CoinPresolveAction *	presolve (CoinPresolveMatrix prob, const CoinPresolveAction next, bool &notFinished)
	Convert explicit bound constraints to column bounds.
Private Member Functions
	slack_doubleton_action (int nactions, const action actions, const CoinPresolveAction next)
Private Attributes
const int	nactions_
const action *const	actions_

Detailed Description

Convert an explicit bound constraint to a column bound.

This transform looks for explicit bound constraints for a variable and transfers the bound to the appropriate column bound array. The constraint is removed from the constraint system.

Definition at line 22 of file CoinPresolveSingleton.hpp.

Constructor & Destructor Documentation

slack_doubleton_action::slack_doubleton_action	(	int	nactions,
		const action *	actions,
		const CoinPresolveAction *	next
	)			`[inline, private]`

Definition at line 39 of file CoinPresolveSingleton.hpp.

slack_doubleton_action::~slack_doubleton_action ( ) [inline]

Definition at line 63 of file CoinPresolveSingleton.hpp.

Member Function Documentation

const char* slack_doubleton_action::name ( ) const [inline, virtual]

A name for debug printing.

It is expected that the name is not stored in the transform itself.

Implements CoinPresolveAction.

Definition at line 48 of file CoinPresolveSingleton.hpp.

static const CoinPresolveAction* slack_doubleton_action::presolve	(	CoinPresolveMatrix *	prob,
		const CoinPresolveAction *	next,
		bool &	notFinished
	)			`[static]`

Convert explicit bound constraints to column bounds.

There is a hard limit (MAX_SLACK_DOUBLETONS) on the number of constraints processed in a given call. notFinished is set to true if candidates remain.

void slack_doubleton_action::postsolve ( CoinPostsolveMatrix * prob ) const [virtual]

Apply the postsolve transformation for this particular presolve action.

Implements CoinPresolveAction.