Couenne  0.2
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Couenne::exprLBCos Class Reference

class to compute lower bound of a cosine based on the bounds of its arguments More...

#include <CouenneExprBCos.hpp>

Inheritance diagram for Couenne::exprLBCos:
Couenne::exprOp Couenne::expression

Public Member Functions

 exprLBCos (expression *lb, expression *ub)
 Constructors, destructor. More...
 
expressionclone (Domain *d=NULL) const
 cloning method More...
 
CouNumber operator() ()
 function for the evaluation of the expression More...
 
enum pos printPos () const
 print position (PRE, INSIDE, POST) More...
 
std::string printOp () const
 print operator More...
 
- Public Member Functions inherited from Couenne::exprOp
virtual enum nodeType Type () const
 Node type. More...
 
 exprOp (expression **arglist, int nargs)
 Constructor. More...
 
 exprOp (expression *arg0, expression *arg1)
 Constructor with two arguments (for convenience) More...
 
virtual ~exprOp ()
 Destructor. More...
 
 exprOp (const exprOp &e, Domain *d=NULL)
 Copy constructor: only allocate space for argument list, which will be copied with clonearglist() More...
 
expression ** ArgList () const
 return argument list More...
 
virtual void ArgList (expression **al)
 set arglist (used in deleting nodes without deleting children) More...
 
int nArgs () const
 return number of arguments More...
 
virtual void print (std::ostream &out=std::cout, bool=false) const
 I/O. 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 expressionsimplify ()
 simplification More...
 
expression ** clonearglist (Domain *d=NULL) const
 clone argument list (for use with clone method) More...
 
int shrink_arglist (CouNumber, CouNumber)
 compress argument list More...
 
virtual int Linearity ()
 get a measure of "how linear" the expression is (see CouenneTypes.h) More...
 
virtual exprAuxstandardize (CouenneProblem *, bool addAux=true)
 generate auxiliary variable More...
 
virtual enum expr_type code ()
 return code to classify type of expression More...
 
virtual bool isInteger ()
 is this expression integer? More...
 
virtual int compare (exprOp &)
 compare with other generic exprOp 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 update dependence set with index of this variable 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 expressionArgument () const
 return argument (when applicable, i.e., with univariate functions) More...
 
virtual expression ** ArgPtr ()
 return pointer to argument (when applicable, i.e., with univariate functions) More...
 
virtual expressionImage () 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 expressionOriginal () 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 CouNumber gradientNorm (const double *x)
 return l-2 norm of gradient at given point More...
 
virtual expressiondifferentiate (int)
 differentiation 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 void getBounds (expression *&, expression *&)
 Get lower and upper bound of an expression (if any) More...
 
virtual void getBounds (CouNumber &, CouNumber &)
 Get lower and upper bound of an expression (if any) – real values. More...
 
virtual void generateCuts (expression *w, OsiCuts &cs, const CouenneCutGenerator *cg, t_chg_bounds *chg=NULL, int wind=-1, CouNumber lb=-COUENNE_INFINITY, CouNumber ub=COUENNE_INFINITY)
 generate convexification cut for constraint w = this 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 bool impliedBound (int, CouNumber *, CouNumber *, t_chg_bounds *, enum auxSign=expression::AUX_EQ)
 does a backward implied bound processing on every expression, including exprSums although already done by Clp (useful when repeated within Couenne). 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 expressionCopy () 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::exprOp
expression ** arglist_
 argument list is an array of pointers to other expressions More...
 
int nargs_
 number of arguments (cardinality of arglist) More...
 

Detailed Description

class to compute lower bound of a cosine based on the bounds of its arguments

Definition at line 27 of file CouenneExprBCos.hpp.

Constructor & Destructor Documentation

Couenne::exprLBCos::exprLBCos ( expression lb,
expression ub 
)
inline

Constructors, destructor.

Definition at line 32 of file CouenneExprBCos.hpp.

References Couenne::exprOp::arglist_.

Referenced by clone().

Member Function Documentation

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

cloning method

Reimplemented from Couenne::expression.

Definition at line 39 of file CouenneExprBCos.hpp.

References Couenne::exprOp::arglist_, and exprLBCos().

CouNumber Couenne::exprLBCos::operator() ( )
inlinevirtual

function for the evaluation of the expression

compute sum

Implements Couenne::expression.

Definition at line 58 of file CouenneExprBCos.hpp.

References Couenne::exprOp::arglist_, Couenne::cos(), and M_PI.

enum pos Couenne::exprLBCos::printPos ( ) const
inlinevirtual

print position (PRE, INSIDE, POST)

Reimplemented from Couenne::exprOp.

Definition at line 47 of file CouenneExprBCos.hpp.

References Couenne::PRE.

std::string Couenne::exprLBCos::printOp ( ) const
inlinevirtual

print operator

Reimplemented from Couenne::exprOp.

Definition at line 51 of file CouenneExprBCos.hpp.


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