class opposite, $ -f(x) $ More...

#include <CouenneExprOpp.hpp>

Inheritance diagram for Couenne::exprOpp:

Collaboration diagram for Couenne::exprOpp:

Public Member Functions
	exprOpp (expression *al)
	Constructors, destructor. More...

expression *	clone (Domain *d=NULL) const
	cloning method More...

unary_function	F ()
	the operator's function More...

void	print (std::ostream &out, bool descend) const
	Output. More...

CouNumber	gradientNorm (const double *x)
	return l-2 norm of gradient at given point More...

expression *	differentiate (int index)
	differentiation More...

virtual expression *	simplify ()
	simplification More...

int	Linearity ()
	get a measure of "how linear" the expression is (see CouenneTypes.h) More...

void	getBounds (expression &, expression &)
	Get lower and upper bound of an expression (if any) More...

void	getBounds (CouNumber &, CouNumber &)
	Get value of lower and upper bound of an expression (if any) More...

virtual void	generateCuts (expression , OsiCuts &, const CouenneCutGenerator , t_chg_bounds *=NULL, int=-1, CouNumber=-COUENNE_INFINITY, CouNumber=COUENNE_INFINITY)
	special version for linear constraints More...

virtual enum expr_type	code ()
	code for comparisons More...

bool	isInteger ()
	is this expression integer? More...

bool	impliedBound (int, CouNumber , CouNumber , t_chg_bounds *, enum auxSign=expression::AUX_EQ)
	implied bound processing More...

exprAux *	standardize (CouenneProblem *, bool addAux=true)
	standardization (to deal with complex arguments) More...

Public Member Functions inherited from Couenne::exprUnary
virtual enum nodeType	Type () const
	node type More...

	exprUnary (expression *argument)
	Constructor. More...

virtual	~exprUnary ()
	Destructor. More...

int	nArgs () const
	return number of arguments More...

virtual expression *	Argument () const
	return argument More...

virtual expression **	ArgPtr ()
	return pointer to argument More...

virtual enum pos	printPos () const
	print position (PRE, INSIDE, POST) More...

virtual std::string	printOp () const
	print operator More...

virtual CouNumber	operator() ()
	compute value of unary operator More...

virtual int	DepList (std::set< int > &deplist, enum dig_type type=ORIG_ONLY)
	fill in the set with all indices of variables appearing in the expression More...

virtual int	compare (exprUnary &)
	compare two unary functions More...

virtual int	rank ()
	used in rank-based branching variable choice More...

virtual void	fillDepSet (std::set< DepNode , compNode > dep, DepGraph *g)
	fill in dependence structure More...

virtual void	replace (exprVar , exprVar )
	replace variable with other More...

virtual void	realign (const CouenneProblem *p)
	empty function to redirect variables to proper variable vector More...

Public Member Functions inherited from Couenne::expression
	expression ()
	Constructor. More...

	expression (const expression &e, Domain *d=NULL)
	Copy constructor. More...

virtual	~expression ()
	Destructor. More...

virtual int	Index () const
	Return index of variable (only valid for exprVar and exprAux) More...

virtual expression **	ArgList () const
	return arglist (when applicable, that is, with N-ary functions) More...

virtual void	ArgList (expression **al)
	set arglist (used in deleting nodes without deleting children) More...

virtual expression *	Image () const
	return pointer to corresponding expression (for auxiliary variables only) More...

virtual void	Image (expression *image)
	set expression associated with this auxiliary variable (for compatibility with exprAux) More...

virtual CouNumber	Value () const
	value (empty) More...

virtual const expression *	Original () const
	If this is an exprClone of a exprClone of an expr???, point to the original expr??? instead of an exprClone – improve computing efficiency. More...

virtual int	dependsOn (int *ind, int n, enum dig_type type=STOP_AT_AUX)
	dependence on variable set: return cardinality of subset of the set of indices in first argument which occur in expression. More...

int	dependsOn (int singleton, enum dig_type type=STOP_AT_AUX)
	version with one index only More...

virtual bool	isDefinedInteger ()
	is this expression defined as an integer? More...

virtual enum convexity	convexity () const
	either CONVEX, CONCAVE, AFFINE, or NONCONVEX More...

virtual int	compare (expression &)
	compare expressions More...

virtual int	compare (exprCopy &)
	compare copies of expressions More...

virtual int	Multiplicity ()
	multiplicity of a variable More...

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. More...

virtual void	linkDomain (Domain *d)
	empty function to update domain pointer More...

virtual bool	isBijective () const
	indicating if function is monotonically increasing More...

virtual CouNumber	inverse (expression *vardep) const
	compute the inverse function More...

virtual void	closestFeasible (expression varind, expression vardep, CouNumber &left, CouNumber &right) const
	closest feasible points in function in both directions More...

virtual bool	isCuttable (CouenneProblem *problem, int index) const
	can this expression be further linearized or are we on its concave ("bad") side More...

virtual bool	isaCopy () const
	return true if this is a copy of something (i.e. an exprCopy) More...

virtual expression *	Copy () const
	return copy of this expression (only makes sense in exprCopy) More...

Additional Inherited Members
Public Types inherited from Couenne::expression
enum	auxSign { AUX_UNDEF =-2, AUX_LEQ =-1, AUX_EQ, AUX_GEQ }
	"sign" of the constraint defining an auxiliary. More...

Protected Attributes inherited from Couenne::exprUnary
expression *	argument_
	single argument taken by this expression More...

Detailed Description

class opposite, $ -f(x) $

Definition at line 27 of file CouenneExprOpp.hpp.

Constructor & Destructor Documentation

Couenne::exprOpp::exprOpp ( expression * al )

inline

Constructors, destructor.

Definition at line 32 of file CouenneExprOpp.hpp.

Member Function Documentation

expression* Couenne::exprOpp::clone ( Domain * d = NULL ) const

inlinevirtual

cloning method

Reimplemented from Couenne::expression.

Definition at line 36 of file CouenneExprOpp.hpp.

unary_function Couenne::exprOpp::F ( )

inlinevirtual

the operator's function

Reimplemented from Couenne::exprUnary.

Definition at line 40 of file CouenneExprOpp.hpp.

void exprOpp::print	(	std::ostream &	out,
		bool	descend
	)		const

virtual

Output.

Reimplemented from Couenne::exprUnary.

Definition at line 107 of file exprOpp.cpp.

CouNumber Couenne::exprOpp::gradientNorm ( const double * x )

inlinevirtual

return l-2 norm of gradient at given point

Reimplemented from Couenne::expression.

Definition at line 48 of file CouenneExprOpp.hpp.

expression * exprOpp::differentiate ( int index )

inlinevirtual

differentiation

Reimplemented from Couenne::expression.

Definition at line 42 of file exprOpp.cpp.

expression * exprOpp::simplify ( )

virtual

simplification

Reimplemented from Couenne::exprUnary.

Definition at line 76 of file exprOpp.cpp.

int Couenne::exprOpp::Linearity ( )

inlinevirtual

get a measure of "how linear" the expression is (see CouenneTypes.h)

Reimplemented from Couenne::exprUnary.

Definition at line 58 of file CouenneExprOpp.hpp.

void exprOpp::getBounds	(	expression *&	lb,
		expression *&	ub
	)

virtual

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

Reimplemented from Couenne::expression.

Definition at line 20 of file exprOpp.cpp.

void exprOpp::getBounds	(	CouNumber &	lb,
		CouNumber &	ub
	)

virtual

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

Reimplemented from Couenne::expression.

Definition at line 31 of file exprOpp.cpp.

void exprOpp::generateCuts	(	expression *	w,
		OsiCuts &	cs,
		const CouenneCutGenerator *	cg,
		t_chg_bounds *	chg = `NULL`,
		int	wind = `-1`,
		CouNumber	lb = `-COUENNE_INFINITY`,
		CouNumber	ub = `COUENNE_INFINITY`
	)

virtual

special version for linear constraints

Reimplemented from Couenne::expression.

Definition at line 23 of file conv-exprOpp.cpp.

virtual enum expr_type Couenne::exprOpp::code ( )

inlinevirtual

code for comparisons

Reimplemented from Couenne::exprUnary.

Definition at line 75 of file CouenneExprOpp.hpp.

bool Couenne::exprOpp::isInteger ( )

inlinevirtual

is this expression integer?

Reimplemented from Couenne::exprUnary.

Definition at line 79 of file CouenneExprOpp.hpp.

bool exprOpp::impliedBound	(	int	wind,
		CouNumber *	l,
		CouNumber *	u,
		t_chg_bounds *	chg,
		enum auxSign	sign = `expression::AUX_EQ`
	)

virtual

implied bound processing

implied bound processing for expression w = -x, upon change in lower- and/or upper bound of w, whose index is wind

Reimplemented from Couenne::expression.

Definition at line 48 of file exprOpp.cpp.

exprAux * exprOpp::standardize	(	CouenneProblem *	p,
		bool	addAux = `true`
	)

virtual

standardization (to deal with complex arguments)

translate an exprOpp into:

1) an exprGroup, if only linear terms are present 2) an exprQuad, if some quadratic/bilinear terms exist

Reimplemented from Couenne::exprUnary.

Definition at line 102 of file sumStandardize.cpp.

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

/tmp/OS-2.10.2/Couenne/src/expression/operators/CouenneExprOpp.hpp
/tmp/OS-2.10.2/Couenne/src/convex/operators/conv-exprOpp.cpp
/tmp/OS-2.10.2/Couenne/src/expression/operators/exprOpp.cpp
/tmp/OS-2.10.2/Couenne/src/standardize/sumStandardize.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation