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Couenne
0.2
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Couenne
0.2
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storage class for previously evaluated expressions More...
#include <CouenneExprStore.hpp>
Public Member Functions | |
| exprStore (expression *copy) | |
| Constructor. More... | |
| exprStore (const exprStore &e, Domain *d=NULL) | |
| Store constructor – Must go. More... | |
| virtual | ~exprStore () |
| Destructor. More... | |
| virtual void | print (std::ostream &out=std::cout, bool descend=false) const |
| Printing. More... | |
| virtual expression * | clone (Domain *d=NULL) const |
| Cloning method. More... | |
| virtual CouNumber | operator() () |
| function for evaluating the expression – returns value of exprCopy pointed to, which returns a value stored from a previous evaluation More... | |
 Public Member Functions inherited from Couenne::exprCopy | |
| enum nodeType | Type () const |
| node type More... | |
| exprCopy (expression *copy) | |
| Empty constructor - used in cloning method of exprClone. More... | |
| exprCopy (const exprCopy &e, Domain *d=NULL) | |
| Copy constructor. More... | |
| virtual | ~exprCopy () |
| Destructor – CAUTION: this is the only destructive destructor, exprClone and exprStore do not destroy anything. More... | |
| const expression * | Original () const |
| If this is an exprClone of a exprClone of an expr???, point to the original expr??? instead of an exprClone – improves computing efficiency. More... | |
| bool | isaCopy () const |
| return true if this is a copy of something, i.e. More... | |
| expression * | Copy () const |
| return copy of this expression (only makes sense in exprCopy) More... | |
| expression * | Image () const |
| return pointer to corresponding expression (for auxiliary variables only) More... | |
| int | Index () const |
| Get variable index in problem. More... | |
| int | nArgs () const |
| Return number of arguments (when applicable, that is, with N-ary functions) More... | |
| expression ** | ArgList () const |
| return arglist (when applicable, that is, with N-ary functions) More... | |
| void | ArgList (expression **al) |
| set arglist (used in deleting nodes without deleting children) More... | |
| expression * | Argument () const |
| return argument (when applicable, i.e., with univariate functions) More... | |
| expression ** | ArgPtr () |
| return pointer to argument (when applicable, i.e., with univariate functions) More... | |
| virtual CouNumber | Value () const |
| value More... | |
| CouNumber | gradientNorm (const double *x) |
| return l-2 norm of gradient at given point More... | |
| expression * | differentiate (int index) |
| differentiation More... | |
| 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... | |
| expression * | simplify () |
| simplify expression (useful for derivatives) More... | |
| int | Linearity () |
| get a measure of "how linear" the expression is (see CouenneTypes.h) More... | |
| bool | isInteger () |
| is this expression integer? More... | |
| virtual bool | isDefinedInteger () |
| is this expression DEFINED as integer? More... | |
| void | getBounds (expression *&lower, expression *&upper) |
| Get lower and upper bound of an expression (if any) More... | |
| void | getBounds (CouNumber &lower, CouNumber &upper) |
| Get value of lower and upper bound of an expression (if any) More... | |
| exprAux * | standardize (CouenneProblem *p, bool addAux=true) |
| Create standard formulation of this expression. More... | |
| 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... | |
| enum expr_type | code () |
| code for comparisons More... | |
| enum convexity | convexity () const |
| either CONVEX, CONCAVE, AFFINE, or NONCONVEX More... | |
| int | compare (expression &e) |
| compare this with other expression More... | |
| int | rank () |
| used in rank-based branching variable choice More... | |
| bool | impliedBound (int wind, CouNumber *l, CouNumber *u, t_chg_bounds *chg) |
| implied bound processing More... | |
| int | Multiplicity () |
| multiplicity of a variable: how many times this variable occurs in expressions throughout the problem More... | |
| 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... | |
| void | replace (exprVar *, exprVar *) |
| replace occurrence of a variable with another variable More... | |
| void | fillDepSet (std::set< DepNode *, compNode > *dep, DepGraph *g) |
| fill in dependence structure More... | |
| void | realign (const CouenneProblem *p) |
| redirect variables to proper variable vector More... | |
| bool | isBijective () const |
| indicating if function is monotonically increasing More... | |
| CouNumber | inverse (expression *vardep) const |
| compute the inverse function More... | |
| void | closestFeasible (expression *varind, expression *vardep, CouNumber &left, CouNumber &right) const |
| closest feasible points in function in both directions More... | |
| bool | isCuttable (CouenneProblem *problem, int index) const |
| can this expression be further linearized or are we on its concave ("bad") side 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 void | Image (expression *image) |
| set expression associated with this auxiliary variable (for compatibility with exprAux) 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 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 void | linkDomain (Domain *d) |
| empty function to update domain pointer More... | |
Protected Attributes | |
| CouNumber | value_ |
| Value of the (previously evaluated) expression. More... | |
| Protected Attributes inherited from Couenne::exprCopy | |
| expression * | copy_ |
| the expression this object is a (reference) copy of More... | |
| CouNumber | value_ |
| saved value to be used by exprStore expressions 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... | |
storage class for previously evaluated expressions
Definition at line 23 of file CouenneExprStore.hpp.
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inline |
Store constructor – Must go.
Definition at line 37 of file CouenneExprStore.hpp.
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inlinevirtual |
Destructor.
Definition at line 43 of file CouenneExprStore.hpp.
References Couenne::exprCopy::copy_.
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virtual |
Printing.
Reimplemented from Couenne::exprCopy.
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inlinevirtual |
Cloning method.
Reimplemented from Couenne::exprCopy.
Definition at line 51 of file CouenneExprStore.hpp.
References exprStore().
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inlinevirtual |
function for evaluating the expression – returns value of exprCopy pointed to, which returns a value stored from a previous evaluation
Reimplemented from Couenne::exprCopy.
Definition at line 57 of file CouenneExprStore.hpp.
References Couenne::exprCopy::copy_, and Couenne::exprCopy::Value().
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protected |
Value of the (previously evaluated) expression.
Definition at line 28 of file CouenneExprStore.hpp.
1.8.5