exprLog Class Reference

class logarithm More...

#include <exprLog.hpp>

Inheritance diagram for exprLog:

[legend]Collaboration diagram for exprLog:

[legend]List of all members.

Public Member Functions
	exprLog (expression *al)
	Constructors, destructor.
expression *	clone (Domain *d=NULL) const
	cloning method
unary_function	F ()
	the operator's function
std::string	printOp () const
	print operator
CouNumber	gradientNorm (const double *x)
	return l-2 norm of gradient at given point
expression *	differentiate (int index)
	differentiation
void	getBounds (expression *&, expression *&)
	Get lower and upper bound of an expression (if any).
void	getBounds (CouNumber &lb, CouNumber &ub)
	Get value of lower and upper bound of an expression (if any).
void	generateCuts (expression *w, OsiCuts &cs, const CouenneCutGenerator *cg, t_chg_bounds *=NULL, int=-1, CouNumber=-COUENNE_INFINITY, CouNumber=COUENNE_INFINITY)
	generate equality between *this and *w
virtual enum expr_type	code ()
	code for comparisons
bool	impliedBound (int, CouNumber *, CouNumber *, t_chg_bounds *)
	implied bound processing
virtual CouNumber	selectBranch (const CouenneObject *obj, const OsiBranchingInformation *info, expression *&var, double *&brpts, double *&brDist, int &way)
	set up branching object by evaluating many branching points for each expression's arguments
virtual bool	isBijective () const
	return true if feasible
virtual CouNumber	inverse (expression *vardep) const
	inverse of this operator
virtual bool	isCuttable (CouenneProblem *problem, int index) const
	can this expression be further linearized or are we on its concave ("bad") side

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Detailed Description

class logarithm

Definition at line 20 of file exprLog.hpp.

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Constructor & Destructor Documentation

exprLog::exprLog

(

expression *

al

)

[inline]

Constructors, destructor.

Definition at line 25 of file exprLog.hpp.

Referenced by clone().

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Member Function Documentation

expression* exprLog::clone

(

Domain *

d = NULL

)

const [inline, virtual]

cloning method

Reimplemented from expression.

Definition at line 29 of file exprLog.hpp.

References exprUnary::argument_, and exprLog().

unary_function exprLog::F

(

)

[inline, virtual]

the operator's function

Reimplemented from exprUnary.

Definition at line 33 of file exprLog.hpp.

References log().

std::string exprLog::printOp

(

)

const [inline, virtual]

print operator

Reimplemented from exprUnary.

Definition at line 36 of file exprLog.hpp.

CouNumber exprLog::gradientNorm

(

const double *

x

)

[virtual]

return l-2 norm of gradient at given point

Reimplemented from expression.

expression* exprLog::differentiate

(

int

index

)

[virtual]

differentiation

Reimplemented from expression.

void exprLog::getBounds	(	expression *&	,
		expression *&
	)			[virtual]

Get lower and upper bound of an expression (if any).

Reimplemented from expression.

void exprLog::getBounds	(	CouNumber &	lb,
		CouNumber &	ub
	)			[virtual]

Get value of lower and upper bound of an expression (if any).

Reimplemented from expression.

void exprLog::generateCuts	(	expression *	w,
		OsiCuts &	cs,
		const CouenneCutGenerator *	cg,
		t_chg_bounds *	= NULL,
		int	= -1,
		CouNumber	= -COUENNE_INFINITY,
		CouNumber	= COUENNE_INFINITY
	)			[virtual]

generate equality between *this and *w

Reimplemented from expression.

virtual enum expr_type exprLog::code

(

)

[inline, virtual]

code for comparisons

Reimplemented from exprUnary.

Definition at line 59 of file exprLog.hpp.

References COU_EXPRLOG.

bool exprLog::impliedBound	(	int	,
		CouNumber *	,
		CouNumber *	,
		t_chg_bounds *
	)			[virtual]

implied bound processing

Reimplemented from expression.

virtual CouNumber exprLog::selectBranch	(	const CouenneObject *	obj,
		const OsiBranchingInformation *	info,
		expression *&	var,
		double *&	brpts,
		double *&	brDist,
		int &	way
	)			[virtual]

set up branching object by evaluating many branching points for each expression's arguments

Reimplemented from expression.

virtual bool exprLog::isBijective

(

)

const [inline, virtual]

return true if feasible

Reimplemented from expression.

Definition at line 76 of file exprLog.hpp.

virtual CouNumber exprLog::inverse

(

expression *

vardep

)

const [inline, virtual]

inverse of this operator

Reimplemented from expression.

Definition at line 79 of file exprLog.hpp.

References exp().

virtual bool exprLog::isCuttable	(	CouenneProblem *	problem,
		int	index
	)			const [virtual]

can this expression be further linearized or are we on its concave ("bad") side

Reimplemented from expression.

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

• exprLog.hpp

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