dlinear::drake::symbolic::UnaryExpressionCell Class Reference

Represents the base class for unary expressions. More...

#include <symbolic_expression_cell.h>

Inheritance diagram for dlinear::drake::symbolic::UnaryExpressionCell:

Public Member Functions
bool	EqualTo (const ExpressionCell &e) const override
	Checks structural equality.
bool	Less (const ExpressionCell &e) const override
	Provides lexicographical ordering between expressions.
mpq_class	Evaluate (const Environment &env) const override
	Evaluates under a given environment (by default, an empty environment).
const Expression &	get_argument () const
	Returns the argument.
	UnaryExpressionCell (const UnaryExpressionCell &e)=delete
	Copy-constructs from an lvalue.
	UnaryExpressionCell ()=delete
	Default constructor (DELETED).
UnaryExpressionCell &	operator= (UnaryExpressionCell &&e)=delete
	Move-assigns (DELETED).
UnaryExpressionCell &	operator= (const UnaryExpressionCell &e)=delete
	Copy-assigns (DELETED).
	UnaryExpressionCell (UnaryExpressionCell &&e)=delete
	Move-constructs from an rvalue.
	~UnaryExpressionCell () override=default
	Default destructor.
Public Member Functions inherited from dlinear::drake::symbolic::ExpressionCell
ExpressionKind	get_kind () const
	Returns expression kind.
size_t	get_hash () const
	Returns hash value.
const Variables &	GetVariables () const
	Collects variables in expression.
bool	is_polynomial () const
	Checks if this symbolic expression is convertible to Polynomial.
bool	include_ite () const
	Returns true if this symbolic expression includes an ITE (If-Then-Else) expression.
virtual Expression	Expand ()=0
	Expands out products and positive integer powers in expression.
virtual Expression	Substitute (const ExpressionSubstitution &expr_subst, const FormulaSubstitution &formula_subst)=0
	Returns an Expression obtained by replacing all occurrences of the variables in s in the current expression cell with the corresponding expressions in s.
virtual Expression	Differentiate (const Variable &x) const =0
	Differentiates this symbolic expression with respect to the variable var.
virtual std::ostream &	Display (std::ostream &os) const =0
	Outputs string representation of expression into output stream os.
unsigned	use_count () const
	Returns the reference count of this cell.
	ExpressionCell (const ExpressionCell &e)=delete
	Copy-constructs an ExpressionCell from an lvalue.
	ExpressionCell (ExpressionCell &&e)=delete
	Move-constructs an ExpressionCell from an rvalue.
ExpressionCell &	operator= (ExpressionCell &&e)=delete
	Move-assigns (DELETED).
ExpressionCell &	operator= (const ExpressionCell &e)=delete
	Copy-assigns (DELETED).
virtual void	UpdateHash ()
	Update the cached hash value.

Protected Member Functions
	UnaryExpressionCell (ExpressionKind k, const Expression &e, bool is_poly)
	Constructs UnaryExpressionCell of kind k with hash, e, is_poly.
virtual mpq_class	DoEvaluate (const mpq_class &v) const =0
	Returns the evaluation result f(v ).
Protected Member Functions inherited from dlinear::drake::symbolic::ExpressionCell
	ExpressionCell (ExpressionKind k)
	Constructs ExpressionCell of kind k.
	ExpressionCell (ExpressionKind k, bool is_poly)
	Constructs ExpressionCell of kind k with hash, is_poly, and include_ite.
	ExpressionCell (ExpressionKind k, bool is_poly, bool include_ite)
	Constructs ExpressionCell of kind k with hash, is_poly, and include_ite.
	ExpressionCell (ExpressionKind k, bool is_poly, bool include_ite, Variables variables)
	Constructs ExpressionCell of kind k with hash, is_poly, and include_ite.
	ExpressionCell (ExpressionKind k, bool is_poly, bool include_ite, Variables variables, size_t hash)
	Constructs ExpressionCell of kind k with hash, is_poly, and include_ite.
virtual	~ExpressionCell ()=default
	Default destructor.
Expression	GetExpression ()
	Returns an expression pointing to this ExpressionCell.

Detailed Description

Represents the base class for unary expressions.

Definition at line 158 of file symbolic_expression_cell.h.

Constructor & Destructor Documentation

UnaryExpressionCell() [1/2]

dlinear::drake::symbolic::UnaryExpressionCell::UnaryExpressionCell ( const UnaryExpressionCell & e )

delete

Copy-constructs from an lvalue.

(DELETED)

UnaryExpressionCell() [2/2]

dlinear::drake::symbolic::UnaryExpressionCell::UnaryExpressionCell ( UnaryExpressionCell && e )

delete

Move-constructs from an rvalue.

(DELETED)

Member Function Documentation

Evaluate()

mpq_class dlinear::drake::symbolic::UnaryExpressionCell::Evaluate ( const Environment & env ) const

overridevirtual

Evaluates under a given environment (by default, an empty environment).

Exceptions

std::runtime_error

if NaN is detected during evaluation.

Implements dlinear::drake::symbolic::ExpressionCell.

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The documentation for this class was generated from the following file:

• third_party/com_github_robotlocomotion_drake/dlinear/symbolic/symbolic_expression_cell.h