Couenne 0.5.8
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class for the exponential,
#include <CouenneExprExp.hpp>
Public Member Functions | |
exprExp (expression *al) | |
Constructor. More... | |
expression * | clone (Domain *d=NULL) const |
Cloning method. More... | |
unary_function | F () |
The operator's function. More... | |
std::string | printOp () const |
Print operator. More... | |
CouNumber | gradientNorm (const double *x) |
return l-2 norm of gradient at given point More... | |
expression * | differentiate (int index) |
Differentiation. More... | |
void | getBounds (expression *&, expression *&) |
Get lower and upper bound of an expression (if any) More... | |
virtual void | getBounds (CouNumber &lb, CouNumber &ub) |
Get expression of lower and upper bound of an expression (if any) More... | |
void | generateCuts (expression *w, OsiCuts &cs, const CouenneCutGenerator *cg, t_chg_bounds *=NULL, int=-1, CouNumber=-COUENNE_INFINITY, CouNumber=COUENNE_INFINITY) |
Generate convexification cuts for this expression. More... | |
virtual enum expr_type | code () |
Code for comparisons. More... | |
bool | impliedBound (int, CouNumber *, CouNumber *, t_chg_bounds *, enum auxSign=expression::AUX_EQ) |
Implied bound processing. 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 bool | isBijective () const |
return true if bijective More... | |
virtual CouNumber | inverse (expression *vardep) const |
inverse of exponential More... | |
virtual bool | isCuttable (CouenneProblem *problem, int index) const |
can this expression be further linearized or are we on its concave ("bad") side More... | |
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virtual enum nodeType | Type () const |
node type More... | |
exprUnary (expression *argument) | |
Constructor. More... | |
virtual unary_function | F () |
the operator itself (e.g. sin, log...) More... | |
virtual | ~exprUnary () |
Destructor. More... | |
int | nArgs () const |
return number of arguments More... | |
virtual expression * | Argument () const |
return argument More... | |
virtual expression ** | ArgPtr () |
return pointer to argument More... | |
virtual void | print (std::ostream &out=std::cout, bool=false) const |
print this expression to iostream More... | |
virtual enum pos | printPos () const |
print position (PRE, INSIDE, POST) More... | |
virtual std::string | printOp () const |
print operator More... | |
virtual CouNumber | operator() () |
compute value of unary operator 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... | |
expression * | simplify () |
simplification More... | |
virtual int | Linearity () |
get a measure of "how linear" the expression is (see CouenneTypes.h) for general univariate functions, return nonlinear. More... | |
virtual exprAux * | standardize (CouenneProblem *, bool addAux=true) |
reduce expression in standard form, creating additional aux variables (and constraints) More... | |
virtual enum expr_type | code () |
type of operator More... | |
virtual bool | isInteger () |
is this expression integer? More... | |
virtual int | compare (exprUnary &) |
compare two unary functions 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 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... | |
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expression () | |
Constructor. More... | |
expression (const expression &e, Domain *d=NULL) | |
Copy constructor. More... | |
virtual | ~expression () |
Destructor. More... | |
virtual expression * | clone (Domain *d=NULL) const |
Cloning method. More... | |
virtual int | Index () const |
Return index of variable (only valid for exprVar and exprAux) More... | |
virtual int | nArgs () const |
return number of arguments (when applicable, that is, with N-ary functions) More... | |
virtual expression ** | ArgList () const |
return arglist (when applicable, that is, with N-ary functions) More... | |
virtual void | ArgList (expression **al) |
set arglist (used in deleting nodes without deleting children) More... | |
virtual expression * | Argument () 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 enum nodeType | Type () const |
node type More... | |
virtual expression * | Image () 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 expression * | Original () 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 void | print (std::ostream &s=std::cout, bool=false) const |
print expression to iostream More... | |
virtual CouNumber | operator() ()=0 |
null function for evaluating the expression More... | |
virtual CouNumber | gradientNorm (const double *x) |
return l-2 norm of gradient at given point More... | |
virtual expression * | differentiate (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 int | DepList (std::set< int > &deplist, enum dig_type type=ORIG_ONLY) |
fill std::set with indices of variables on which this expression depends. More... | |
virtual expression * | simplify () |
simplify expression (useful for derivatives) More... | |
virtual int | Linearity () |
get a measure of "how linear" the expression is (see CouenneTypes.h) More... | |
virtual bool | isDefinedInteger () |
is this expression defined as an integer? More... | |
virtual bool | isInteger () |
is this expression 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 exprAux * | standardize (CouenneProblem *p, bool addAux=true) |
Create standard form of this expression, by: 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 expr_type | code () |
return integer for comparing expressions (used to recognize common expression) 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 int | rank () |
used in rank-based branching variable choice: original variables have rank 1; auxiliary w=f(x) has rank r(w) = r(x)+1; finally, auxiliary w=f(x1,x2...,xk) has rank r(w) = 1+max{r(xi):i=1..k}. 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 | replace (exprVar *, exprVar *) |
replace expression with another More... | |
virtual void | fillDepSet (std::set< DepNode *, compNode > *, DepGraph *) |
update dependence set with index of variables on which this expression depends More... | |
virtual void | linkDomain (Domain *d) |
empty function to update domain pointer More... | |
virtual void | realign (const CouenneProblem *p) |
empty function to redirect variables to proper variable vector 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 expression * | Copy () const |
return copy of this expression (only makes sense in exprCopy) More... | |
Additional Inherited Members | |
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enum | auxSign { AUX_UNDEF =-2 , AUX_LEQ =-1 , AUX_EQ , AUX_GEQ } |
"sign" of the constraint defining an auxiliary. More... | |
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expression * | argument_ |
single argument taken by this expression More... | |
class for the exponential,
Definition at line 22 of file CouenneExprExp.hpp.
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inline |
Constructor.
Definition at line 27 of file CouenneExprExp.hpp.
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inlinevirtual |
Cloning method.
Reimplemented from Couenne::expression.
Definition at line 31 of file CouenneExprExp.hpp.
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inlinevirtual |
The operator's function.
Reimplemented from Couenne::exprUnary.
Definition at line 35 of file CouenneExprExp.hpp.
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inlinevirtual |
Print operator.
Reimplemented from Couenne::exprUnary.
Definition at line 38 of file CouenneExprExp.hpp.
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inlinevirtual |
return l-2 norm of gradient at given point
Reimplemented from Couenne::expression.
Definition at line 42 of file CouenneExprExp.hpp.
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virtual |
Differentiation.
Reimplemented from Couenne::expression.
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virtual |
Get lower and upper bound of an expression (if any)
Reimplemented from Couenne::expression.
Get expression of lower and upper bound of an expression (if any)
Reimplemented from Couenne::expression.
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virtual |
Generate convexification cuts for this expression.
Reimplemented from Couenne::expression.
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inlinevirtual |
Code for comparisons.
Reimplemented from Couenne::exprUnary.
Definition at line 62 of file CouenneExprExp.hpp.
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virtual |
Implied bound processing.
Reimplemented from Couenne::expression.
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virtual |
Set up branching object by evaluating many branching points for each expression's arguments.
Reimplemented from Couenne::expression.
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inlinevirtual |
return true if bijective
Reimplemented from Couenne::expression.
Definition at line 78 of file CouenneExprExp.hpp.
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inlinevirtual |
inverse of exponential
Reimplemented from Couenne::expression.
Definition at line 81 of file CouenneExprExp.hpp.
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virtual |
can this expression be further linearized or are we on its concave ("bad") side
Reimplemented from Couenne::expression.