#include <CouenneExprGroup.hpp>
Inheritance diagram for Couenne::exprGroup:
Public Types | |
typedef std::vector< std::pair< exprVar *, CouNumber > > | lincoeff |
Public Member Functions | |
exprGroup (CouNumber, lincoeff &, expression **=NULL, int=0) | |
Constructor. | |
exprGroup (const exprGroup &src, Domain *d=NULL) | |
Copy constructor. | |
virtual | ~exprGroup () |
Destructor -- needed to clear bounds. | |
virtual expression * | clone (Domain *d=NULL) const |
Cloning method. | |
CouNumber | getc0 () |
return constant term | |
lincoeff & | lcoeff () const |
return linear term coefficients | |
virtual void | print (std::ostream &=std::cout, bool=false) const |
Print expression to iostream. | |
virtual CouNumber | operator() () |
compute sum of linear and nonlinear terms | |
virtual CouNumber | gradientNorm (const double *x) |
return l-2 norm of gradient at given point | |
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 | |
virtual expression * | differentiate (int index) |
differentiation | |
virtual expression * | simplify () |
simplification | |
virtual int | Linearity () |
get a measure of "how linear" the expression is: | |
virtual void | getBounds (expression *&, expression *&) |
Get lower and upper bound of an expression (if any). | |
virtual void | getBounds (CouNumber &, CouNumber &) |
Get lower and upper bound of an expression (if any). | |
virtual void | generateCuts (expression *, OsiCuts &, const CouenneCutGenerator *, t_chg_bounds *=NULL, int=-1, CouNumber=-COUENNE_INFINITY, CouNumber=COUENNE_INFINITY) |
special version for linear constraints | |
virtual int | compare (exprGroup &) |
only compare with people of the same kind | |
virtual enum expr_type | code () |
code for comparisons | |
virtual bool | isInteger () |
is this expression integer? | |
virtual int | rank () |
used in rank-based branching variable choice | |
virtual void | fillDepSet (std::set< DepNode *, compNode > *, DepGraph *) |
update dependence set with index of this variable | |
virtual void | replace (exprVar *x, exprVar *w) |
replace variable x with new (aux) w | |
virtual void | realign (const CouenneProblem *p) |
redirect variables to proper variable vector | |
Static Public Member Functions | |
static expression * | genExprGroup (CouNumber, lincoeff &, expression **=NULL, int=0) |
Generalized (static) constructor: check parameters and return a constant, a single variable, or a real exprGroup. | |
Protected Attributes | |
lincoeff | lcoeff_ |
coefficients and indices of the linear term | |
CouNumber | c0_ |
constant term |
Definition at line 25 of file CouenneExprGroup.hpp.
typedef std::vector<std::pair <exprVar *, CouNumber> > Couenne::exprGroup::lincoeff |
Definition at line 29 of file CouenneExprGroup.hpp.
Couenne::exprGroup::exprGroup | ( | CouNumber | , | |
lincoeff & | , | |||
expression ** | = NULL , |
|||
int | = 0 | |||
) |
Copy constructor.
Definition at line 90 of file exprGroup.cpp.
References Couenne::expression::Index(), and lcoeff_.
exprGroup::~exprGroup | ( | ) | [virtual] |
Destructor -- needed to clear bounds.
Definition at line 103 of file exprGroup.cpp.
References code(), Couenne::COU_EXPRLBOUND, Couenne::COU_EXPRUBOUND, and lcoeff_.
static expression* Couenne::exprGroup::genExprGroup | ( | CouNumber | , | |
lincoeff & | , | |||
expression ** | = NULL , |
|||
int | = 0 | |||
) | [static] |
Generalized (static) constructor: check parameters and return a constant, a single variable, or a real exprGroup.
Referenced by createCommonExpr(), and Couenne::CouenneAmplInterface::readnl().
virtual expression* Couenne::exprGroup::clone | ( | Domain * | d = NULL |
) | const [inline, virtual] |
Cloning method.
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 58 of file CouenneExprGroup.hpp.
References exprGroup().
CouNumber Couenne::exprGroup::getc0 | ( | ) | [inline] |
lincoeff& Couenne::exprGroup::lcoeff | ( | ) | const [inline] |
return linear term coefficients
Definition at line 63 of file CouenneExprGroup.hpp.
References lcoeff_.
void exprGroup::print | ( | std::ostream & | = std::cout , |
|
bool | = false | |||
) | const [virtual] |
Print expression to iostream.
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 115 of file exprGroup.cpp.
References c0_, Couenne::CONST, COUENNE_EPS, lcoeff_, MAX_ARG_LINE, Couenne::exprOp::nargs_, print(), Couenne::exprOp::Type(), and Couenne::expression::Value().
CouNumber Couenne::exprGroup::operator() | ( | ) | [inline, virtual] |
compute sum of linear and nonlinear terms
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 127 of file CouenneExprGroup.hpp.
References c0_, lcoeff_, and Couenne::exprSum::operator()().
Referenced by Couenne::exprQuad::operator()().
CouNumber exprGroup::gradientNorm | ( | const double * | x | ) | [virtual] |
return l-2 norm of gradient at given point
Not needed for now, as we only use it with nonlinear operators
Reimplemented from Couenne::expression.
Reimplemented in Couenne::exprQuad.
Definition at line 376 of file exprGroup.cpp.
References lcoeff_.
int exprGroup::DepList | ( | std::set< int > & | deplist, | |
enum dig_type | type = ORIG_ONLY | |||
) | [virtual] |
fill in the set with all indices of variables appearing in the expression
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 264 of file exprGroup.cpp.
References Couenne::exprOp::DepList(), and lcoeff_.
Referenced by Couenne::exprQuad::DepList().
expression * exprGroup::differentiate | ( | int | index | ) | [virtual] |
differentiation
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 150 of file exprGroup.cpp.
References Couenne::exprOp::arglist_, COUENNE_EPS, Couenne::expression::dependsOn(), Couenne::exprSum::exprSum(), Couenne::expression::Index(), lcoeff_, and Couenne::exprOp::nargs_.
expression * exprGroup::simplify | ( | ) | [virtual] |
simplification
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 407 of file exprGroup.cpp.
References Couenne::exprOp::simplify().
int exprGroup::Linearity | ( | ) | [virtual] |
get a measure of "how linear" the expression is:
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 179 of file exprGroup.cpp.
References c0_, Couenne::CONSTANT, COUENNE_EPS, lcoeff_, Couenne::LINEAR, Couenne::exprSum::Linearity(), and Couenne::ZERO.
void exprGroup::getBounds | ( | expression *& | , | |
expression *& | ||||
) | [virtual] |
Get lower and upper bound of an expression (if any).
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 25 of file conv-exprGroup.cpp.
References c0_, exprGroup(), Couenne::exprSum::getBounds(), Couenne::expression::Index(), and lcoeff_.
Referenced by generateCuts().
Get lower and upper bound of an expression (if any).
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 136 of file conv-exprGroup.cpp.
References c0_, COUENNE_INFINITY, Couenne::exprSum::getBounds(), and lcoeff_.
void exprGroup::generateCuts | ( | expression * | , | |
OsiCuts & | , | |||
const CouenneCutGenerator * | , | |||
t_chg_bounds * | = NULL , |
|||
int | = -1 , |
|||
CouNumber | = -COUENNE_INFINITY , |
|||
CouNumber | = COUENNE_INFINITY | |||
) | [virtual] |
special version for linear constraints
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 196 of file conv-exprGroup.cpp.
References Couenne::exprOp::arglist_, Couenne::expression::AUX_EQ, Couenne::expression::AUX_GEQ, Couenne::expression::AUX_LEQ, c0_, Couenne::CONST, COUENNE_EPS, COUENNE_INFINITY, e, getBounds(), Couenne::expression::Index(), lcoeff_, Couenne::exprOp::nargs_, Couenne::exprOp::Type(), Couenne::expression::Value(), and w.
int exprGroup::compare | ( | exprGroup & | ) | [virtual] |
only compare with people of the same kind
Definition at line 192 of file exprGroup.cpp.
References c0_, COUENNE_EPS, e, Couenne::expression::Index(), and lcoeff_.
virtual enum expr_type Couenne::exprGroup::code | ( | ) | [inline, virtual] |
code for comparisons
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 106 of file CouenneExprGroup.hpp.
References Couenne::COU_EXPRGROUP.
Referenced by ~exprGroup().
bool exprGroup::isInteger | ( | ) | [virtual] |
is this expression integer?
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 290 of file exprGroup.cpp.
References c0_, COUENNE_EPS, Couenne::exprOp::isInteger(), and lcoeff_.
Referenced by Couenne::exprQuad::isInteger().
int exprGroup::rank | ( | ) | [virtual] |
used in rank-based branching variable choice
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 234 of file exprGroup.cpp.
References lcoeff_, r, and Couenne::exprOp::rank().
Referenced by Couenne::exprQuad::rank().
update dependence set with index of this variable
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 253 of file exprGroup.cpp.
References Couenne::exprOp::fillDepSet(), g, Couenne::expression::Index(), and lcoeff_.
Referenced by Couenne::exprQuad::fillDepSet().
replace variable x with new (aux) w
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 325 of file exprGroup.cpp.
References Couenne::expression::Index(), lcoeff_, replace(), w, and x.
void exprGroup::realign | ( | const CouenneProblem * | p | ) | [virtual] |
redirect variables to proper variable vector
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 388 of file exprGroup.cpp.
References Couenne::AUX, Couenne::expression::Index(), lcoeff_, Couenne::expression::Original(), Couenne::exprOp::Type(), and Couenne::VAR.
lincoeff Couenne::exprGroup::lcoeff_ [mutable, protected] |
coefficients and indices of the linear term
Definition at line 33 of file CouenneExprGroup.hpp.
Referenced by compare(), Couenne::exprQuad::computeQBound(), Couenne::exprQuad::computeQuadFiniteBound(), DepList(), Couenne::exprQuad::differentiate(), differentiate(), exprGroup(), fillDepSet(), generateCuts(), getBounds(), gradientNorm(), Couenne::exprQuad::impliedBound(), isInteger(), lcoeff(), Linearity(), Couenne::exprQuad::Linearity(), operator()(), print(), Couenne::exprQuad::quadCuts(), rank(), realign(), replace(), and ~exprGroup().
CouNumber Couenne::exprGroup::c0_ [protected] |
constant term
Definition at line 34 of file CouenneExprGroup.hpp.
Referenced by compare(), Couenne::exprQuad::computeQBound(), generateCuts(), getBounds(), getc0(), Couenne::exprQuad::impliedBound(), isInteger(), Linearity(), Couenne::exprQuad::Linearity(), operator()(), print(), and Couenne::exprQuad::quadCuts().