abacus::OptSense Class Reference

Sense of optimization. More...

#include <ogdf/lib/abacus/optsense.h>

Inheritance diagram for abacus::OptSense:

Public Types
enum	SENSE { Min , Max , Unknown }
	The enumeration defining the sense of optimization. More...

Public Member Functions
	OptSense (SENSE s=Unknown)
	Initializes the optimization sense tos.
bool	max () const
	Returns true if it is maximization problem,, false otherwise.
bool	min () const
	Returns true If it is minimization problem,, false otherwise.
SENSE	sense () const
	Returns the sense of the optimization.
void	sense (SENSE s)
	Sets the optimization sense to s.
bool	unknown () const
	Returns true if the optimization sense is unknown,, false otherwise.
Public Member Functions inherited from abacus::AbacusRoot
virtual	~AbacusRoot ()
	The destructor.

Private Attributes
SENSE	sense_
	The optimization sense.

Friends
std::ostream &	operator<< (std::ostream &out, const OptSense &rhs)
	Output operator for optimization senses.

Additional Inherited Members
Static Public Member Functions inherited from abacus::AbacusRoot
static bool	ascii2bool (const string &str)
	Converts the string str to a boolean value.
static bool	endsWith (const string &str, const string &end)
	Returns true if str ends with end, false otherwise.
static double	fracPart (double x)
	Returns the absolute value of the fractional part of x.
static const char *	onOff (bool value)
	Converts a boolean variable to the strings "on" and "off".

Detailed Description

Sense of optimization.

We can either minimize or maximize the objective function. We encapsulate this information in a class since it is required in various classes, e.g., in the master of the branch-and-bound algorithm and in the linear program.

Definition at line 45 of file optsense.h.

Member Enumeration Documentation

SENSE

enum abacus::OptSense::SENSE

The enumeration defining the sense of optimization.

Enumerator
Min	Minimization problem.
Max	Maximization problem.
Unknown	Unknown optimization sense, required to recognize uninitialized object.

Definition at line 49 of file optsense.h.

Constructor & Destructor Documentation

OptSense()

abacus::OptSense::OptSense ( SENSE  s = Unknown )

inline

Initializes the optimization sense tos.

Parameters

s	The sense of the optimization. The default value is Unknown.

Definition at line 59 of file optsense.h.

Member Function Documentation

max()

bool abacus::OptSense::max ( ) const

inline

Returns true if it is maximization problem,, false otherwise.

Definition at line 91 of file optsense.h.

min()

bool abacus::OptSense::min ( ) const

inline

Returns true If it is minimization problem,, false otherwise.

Definition at line 85 of file optsense.h.

sense() [1/2]

SENSE abacus::OptSense::sense ( ) const

inline

Returns the sense of the optimization.

Definition at line 81 of file optsense.h.

sense() [2/2]

void abacus::OptSense::sense ( SENSE  s )

inline

Sets the optimization sense to s.

Parameters

s	The new sense of the optimization.

Definition at line 77 of file optsense.h.

unknown()

bool abacus::OptSense::unknown ( ) const

inline

Returns true if the optimization sense is unknown,, false otherwise.

Definition at line 97 of file optsense.h.

Friends And Related Symbol Documentation

operator<<

std::ostream & operator<< ( std::ostream &  out, const OptSense &  rhs  )

friend

Output operator for optimization senses.

The output operator writes the optimization sense on an output stream in the form maximize, minimize, or unknown.

Parameters

out	The output stream.
rhs	The sense being output.

Returns

The output stream.

Member Data Documentation

sense_

SENSE abacus::OptSense::sense_

private

The optimization sense.

Definition at line 103 of file optsense.h.

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The documentation for this class was generated from the following file:

• include/ogdf/lib/abacus/optsense.h