#include <exprDiv.hpp>
Inheritance diagram for exprDiv:


Public Member Functions | |
| exprDiv (expression **al, int n=2) | |
| Constructor. | |
| exprDiv (expression *arg0, expression *arg1) | |
| Constructor with two arguments given explicitly. | |
| expression * | clone (Domain *d=NULL) const |
| Cloning method. | |
| std::string | printOp () const |
| Print operator. | |
| CouNumber | operator() () |
| Function for the evaluation of the expression. | |
| CouNumber | gradientNorm (const double *x) |
| return l-2 norm of gradient at given point | |
| expression * | differentiate (int index) |
| Differentiation. | |
| expression * | simplify () |
| Simplification. | |
| int | Linearity () |
| Get a measure of "how linear" the expression is (see CouenneTypes.h). | |
| void | getBounds (expression *&lb, expression *&ub) |
| 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). | |
| exprAux * | standardize (CouenneProblem *p, bool addAux=true) |
| Reduce expression in standard form, creating additional aux variables (and constraints). | |
| 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 | isInteger () |
| is this expression integer? | |
| 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 void | closestFeasible (expression *varind, expression *vardep, CouNumber &left, CouNumber &right) const |
| compute $y^{lv}$ and $y^{uv}$ for Violation Transfer algorithm | |
| virtual bool | isCuttable (CouenneProblem *problem, int index) const |
| can this expression be further linearized or are we on its concave ("bad") side | |
Definition at line 23 of file exprDiv.hpp.
| exprDiv::exprDiv | ( | expression ** | al, | |
| int | n = 2 | |||
| ) | [inline] |
| exprDiv::exprDiv | ( | expression * | arg0, | |
| expression * | arg1 | |||
| ) | [inline] |
| expression* exprDiv::clone | ( | Domain * | d = NULL |
) | const [inline, virtual] |
Cloning method.
Reimplemented from expression.
Definition at line 36 of file exprDiv.hpp.
References exprOp::clonearglist(), exprDiv(), and exprOp::nargs_.
| std::string exprDiv::printOp | ( | ) | const [inline, virtual] |
| CouNumber exprDiv::operator() | ( | ) | [inline, virtual] |
Function for the evaluation of the expression.
Implements expression.
Definition at line 114 of file exprDiv.hpp.
References exprOp::arglist_.
| CouNumber exprDiv::gradientNorm | ( | const double * | x | ) | [virtual] |
return l-2 norm of gradient at given point
Reimplemented from expression.
Definition at line 252 of file exprDiv.cpp.
References exprOp::arglist_, COUENNE_INFINITY, expression::Index(), and expression::Value().
| expression * exprDiv::differentiate | ( | int | index | ) | [virtual] |
Differentiation.
Reimplemented from expression.
Definition at line 79 of file exprDiv.cpp.
References exprOp::arglist_, and expression::dependsOn().
| expression * exprDiv::simplify | ( | ) | [virtual] |
Simplification.
Reimplemented from exprOp.
Definition at line 24 of file exprDiv.cpp.
References exprOp::arglist_, CONST, COUENNE_EPS, COUENNE_EPS_SIMPL, exprOp::simplify(), exprOp::Type(), and expression::Value().
| int exprDiv::Linearity | ( | ) | [inline, virtual] |
Get a measure of "how linear" the expression is (see CouenneTypes.h).
Reimplemented from exprOp.
Definition at line 56 of file exprDiv.hpp.
References exprOp::arglist_, CONST, NONLINEAR, and exprOp::Type().
| void exprDiv::getBounds | ( | expression *& | lb, | |
| expression *& | ub | |||
| ) | [virtual] |
Get lower and upper bound of an expression (if any).
Reimplemented from expression.
Definition at line 108 of file exprDiv.cpp.
References exprOp::arglist_.
Referenced by generateCuts(), getBounds(), and isInteger().
Get value of lower and upper bound of an expression (if any).
Reimplemented from expression.
Definition at line 128 of file exprDiv.cpp.
References exprOp::arglist_, COUENNE_INFINITY, getBounds(), and safeDiv().
| exprAux * exprDiv::standardize | ( | CouenneProblem * | p, | |
| bool | addAux = true | |||
| ) | [virtual] |
Reduce expression in standard form, creating additional aux variables (and constraints).
Reimplemented from exprOp.
Definition at line 23 of file conv-exprDiv.cpp.
References exprOp::standardize().
| void exprDiv::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.
Definition at line 31 of file conv-exprDiv.cpp.
References exprOp::arglist_, COUENNE_EPS, getBounds(), expression::Index(), k, t_chg_bounds::lower(), t_chg_bounds::UNCHANGED, unifiedProdCuts(), t_chg_bounds::upper(), w, and x.
| virtual enum expr_type exprDiv::code | ( | ) | [inline, virtual] |
Code for comparisons.
Reimplemented from exprOp.
Definition at line 81 of file exprDiv.hpp.
References COU_EXPRDIV.
| bool exprDiv::isInteger | ( | ) | [virtual] |
is this expression integer?
Reimplemented from exprOp.
Definition at line 159 of file exprDiv.cpp.
References exprOp::arglist_, COUENNE_EPS, COUENNE_round, getBounds(), and nu.
Referenced by impliedBound().
| bool exprDiv::impliedBound | ( | int | , | |
| CouNumber * | , | |||
| CouNumber * | , | |||
| t_chg_bounds * | ||||
| ) | [virtual] |
Implied bound processing.
Reimplemented from expression.
Definition at line 19 of file impliedBounds-exprDiv.cpp.
References exprOp::arglist_, c, t_chg_bounds::CHANGED, CONST, COUENNE_EPS, expression::Index(), isInteger(), t_chg_bounds::setLower(), t_chg_bounds::setUpper(), exprOp::Type(), updateBound(), and expression::Value().
| CouNumber exprDiv::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.
Definition at line 19 of file branchExprDiv.cpp.
References exprOp::arglist_, computeMulBrDist(), COUENNE_EPS, COUENNE_INFINITY, COUENNE_NEAR_BOUND, expression::Index(), CouenneObject::Reference(), TWO_LEFT, TWO_RAND, and TWO_RIGHT.
| void exprDiv::closestFeasible | ( | expression * | varind, | |
| expression * | vardep, | |||
| CouNumber & | left, | |||
| CouNumber & | right | |||
| ) | const [virtual] |
compute $y^{lv}$ and $y^{uv}$ for Violation Transfer algorithm
Reimplemented from expression.
Definition at line 210 of file exprDiv.cpp.
References exprOp::arglist_, c, expression::Index(), and x.
| virtual bool exprDiv::isCuttable | ( | CouenneProblem * | problem, | |
| int | index | |||
| ) | const [inline, virtual] |
can this expression be further linearized or are we on its concave ("bad") side
Reimplemented from expression.
Definition at line 107 of file exprDiv.hpp.
1.4.7