namespace events class Comparison : public Condition

Defines an event condition for comparing event functions

Inheritance:

Public Classes

enum	operation Comparison operations. opEqual Always true opUnequal Always false opLess identity condition opLessEqual not condition opGreater and condition opGreaterEqual or condition

Public Methods

	Comparison (const Function& f1, const Function& f2, operation op, double tolerance = 0.0) Constructor
	Comparison (const Comparison& cond, const Function& f, operation op, double tolerance = 0.0) Constructor
virtual Comparison*	Copy () const Copy the event condition
virtual bool	Evaluate (const Argument& arg, bool& val) const Evaluate

Protected Methods

	Comparison () Default constructor
virtual bool	ValueR (const Argument& arg, Value& val) const Right hand side of left hand side

Inherited from Condition:

Public Methods

bool operator) (const Argument& arg, bool& val) const

bool operator) (const Event& event, bool& val) const

static const Condition& True()

static const Condition& False()

Protected Methods

Condition& operator= (const Condition&)

enum operation

Comparison operations supported by the condition.

opEqual

Always true

opUnequal

Always false

opLess

identity condition

opLessEqual

not condition

opGreater

and condition

opGreaterEqual

or condition

Comparison(const Function& f1, const Function& f2, operation op, double tolerance = 0.0)

Creates an column condition between two columns.

Comparison(const Comparison& cond, const Function& f, operation op, double tolerance = 0.0)

Creates an column condition between a condition and a fucntion. This allows for expression such as "3 < Column ("Amplitude") < 5".

virtual Comparison* Copy() const

Returns a copy of the event condition. This method must be overriden by all descendents.

Returns:

event copy

virtual bool Evaluate(const Argument& arg, bool& val) const

Evaluate the condition.

Returns:

True if condition could be evaluated

Parameters:

arg - Event argument list
val - Condition value (return)

Comparison()

Default constructor

virtual bool ValueR(const Argument& arg, Value& val) const

Get the right hand side value of the left hand side argument!

Returns:

True if value is defined

Parameters:

arg - Event argument list
x - Right hand side value

This class has no child classes.

Author:

Written June 2001 by Masahiro Ito and Daniel Sigg

Version:

1.0

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Please send questions and comments to sigg_d@ligo-wa.caltech.edu

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