#include <CouenneExprAbs.hpp>
Inheritance diagram for Couenne::exprAbs:
Public Member Functions | |
exprAbs (expression *al) | |
Constructor. | |
unary_function | F () |
The operator's function. | |
expression * | clone (Domain *d=NULL) const |
cloning method | |
std::string | printOp () const |
output | |
CouNumber | gradientNorm (const double *x) |
return l_2 norm of gradient at given point | |
expression * | differentiate (int index) |
differentiation | |
virtual void | getBounds (expression *&, expression *&) |
Get lower and upper bound of an expression (if any). | |
virtual 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 | |
enum expr_type | code () |
code for comparisons | |
bool | isInteger () |
is this expression integer? | |
bool | impliedBound (int, CouNumber *, CouNumber *, t_chg_bounds *, enum auxSign=expression::AUX_EQ) |
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 |
closest feasible points in function in both directions | |
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 CouenneExprAbs.hpp.
Couenne::exprAbs::exprAbs | ( | expression * | al | ) | [inline] |
unary_function Couenne::exprAbs::F | ( | ) | [inline, virtual] |
The operator's function.
Reimplemented from Couenne::exprUnary.
Definition at line 32 of file CouenneExprAbs.hpp.
expression* Couenne::exprAbs::clone | ( | Domain * | d = NULL |
) | const [inline, virtual] |
cloning method
Reimplemented from Couenne::expression.
Definition at line 35 of file CouenneExprAbs.hpp.
References Couenne::exprUnary::argument_, and exprAbs().
std::string Couenne::exprAbs::printOp | ( | ) | const [inline, virtual] |
CouNumber Couenne::exprAbs::gradientNorm | ( | const double * | x | ) | [inline, virtual] |
return l_2 norm of gradient at given point
Reimplemented from Couenne::expression.
Definition at line 43 of file CouenneExprAbs.hpp.
References Couenne::exprUnary::argument_, and Couenne::expression::Index().
expression * exprAbs::differentiate | ( | int | index | ) | [virtual] |
differentiation
Reimplemented from Couenne::expression.
Definition at line 73 of file exprAbs.cpp.
References Couenne::exprUnary::argument_.
void exprAbs::getBounds | ( | expression *& | , | |
expression *& | ||||
) | [virtual] |
Get lower and upper bound of an expression (if any).
Reimplemented from Couenne::expression.
Definition at line 26 of file exprAbs.cpp.
References Couenne::exprUnary::argument_.
Referenced by generateCuts(), and getBounds().
Get value of lower and upper bound of an expression (if any).
Reimplemented from Couenne::expression.
Definition at line 51 of file exprAbs.cpp.
References Couenne::exprUnary::argument_, and getBounds().
void exprAbs::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 Couenne::expression.
Definition at line 23 of file conv-exprAbs.cpp.
References Couenne::exprUnary::argument_, Couenne::expression::AUX_GEQ, Couenne::expression::AUX_LEQ, COUENNE_INFINITY, createCut(), getBounds(), Couenne::expression::Index(), Couenne::t_chg_bounds::lower(), Couenne::t_chg_bounds::UNCHANGED, and w.
enum expr_type Couenne::exprAbs::code | ( | ) | [inline, virtual] |
code for comparisons
Reimplemented from Couenne::exprUnary.
Definition at line 63 of file CouenneExprAbs.hpp.
References Couenne::COU_EXPRABS.
bool Couenne::exprAbs::isInteger | ( | ) | [inline, virtual] |
is this expression integer?
Reimplemented from Couenne::exprUnary.
Definition at line 66 of file CouenneExprAbs.hpp.
References Couenne::exprUnary::argument_.
Referenced by impliedBound().
bool exprAbs::impliedBound | ( | int | , | |
CouNumber * | , | |||
CouNumber * | , | |||
t_chg_bounds * | , | |||
enum | auxSign = expression::AUX_EQ | |||
) |
implied bound processing
Definition at line 90 of file exprAbs.cpp.
References Couenne::exprUnary::argument_, Couenne::expression::AUX_GEQ, Couenne::expression::AUX_LEQ, Couenne::t_chg_bounds::CHANGED, COUENNE_EPS, COUENNE_INFINITY, Couenne::expression::Index(), isInteger(), Couenne::t_chg_bounds::setLower(), Couenne::t_chg_bounds::setUpper(), and Couenne::updateBound().
CouNumber exprAbs::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
For an exprAbs, simply branch at zero.
Reimplemented from Couenne::expression.
Definition at line 28 of file branchExprAbs.cpp.
References Couenne::exprUnary::argument_, COUENNE_EPS, Couenne::expression::Index(), M_SQRT2l, and Couenne::TWO_RAND.
void exprAbs::closestFeasible | ( | expression * | varind, | |
expression * | vardep, | |||
CouNumber & | left, | |||
CouNumber & | right | |||
) | const [virtual] |
closest feasible points in function in both directions
Reimplemented from Couenne::expression.
Definition at line 135 of file exprAbs.cpp.
References COUENNE_INFINITY.
bool exprAbs::isCuttable | ( | CouenneProblem * | problem, | |
int | index | |||
) | const [virtual] |
can this expression be further linearized or are we on its concave ("bad") side
Reimplemented from Couenne::expression.
Definition at line 163 of file exprAbs.cpp.
References Couenne::exprUnary::argument_, Couenne::expression::Index(), and x.