Event columns can be used in math expression which can be used everywhere an event function is needed.

Inheritance:

Public Methods

	Math (const Function& f, operation op) Constructor
	Math (const Function& f1, const Function& f2, operation op) Constructor
virtual Math*	Copy () const Copy the event column
virtual bool	Evaluate (const Argument& arg, Value& val) const Math expression value

Public Members

enum	operation Math operations.

Protected Methods

Math () Default constructor

Inherited from Function:

Public Methods

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

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

Protected Methods

Function& operator= (const Function&)

Documentation

Event columns can be used in math expression which can be used everywhere an event function is needed. For example one can write

    5 < sqrt (pwr (Column ("Amplitude(0)"), 2) +
              pwr (Column ("Amplitude(1)"), 2) )
    \begin{verbatim}
    to define an event condition which checks whether the vector 
    sum of the amplitudes of two events is larger than 5.
   
    @memo Defines the event math routines
    @author Written June 2001 by Masahiro Ito and Daniel Sigg
    @version 1.0

enum operation

Math operations supported by the function.

opPos

Positive value

opNeg

Negative value

opInc

Increment (prefix)

opDec

Decrement (prefix)

opAdd

Addition

opSub

Subtraction

opMul

Multiplication

opDiv

Division

opMod

Modulus

opAbs

Absolute value

opSqrt

Square root

opPow

Power

opExp

Exponential

opLog

Natural logarithm

opLog10

Logarithm base 10

opSin

Sine

opCos

Cosine

opTan

Tangent

opAsin

Arc sine

opAcos

Arc cosine

opAtan

Arc tangent

opAtan2

Arc tangent (2 arguments)

opSinh

Sine hyp

opCosh

Cosine hyp

opTanh

Tangent hyp

opCeil

Ceiling

opFloor

Floor

opNot

Negate ~

opAnd

And &

opOr

Or |

opXor

Xor ^

opLeft

Left shift <<

opRight

Right shift >>

opConj

Complex conjugate

opPolar

Complex number in polar notation

opReal

Real part

opImag

Imaginary part

opArg

Argument

opNorm

Norm

Math(const Function& f, operation op)

Creates an math expression of a single value (unary operator).

Math(const Function& f1, const Function& f2, operation op)

Creates an math expression of two values (binary operator).

virtual Math* Copy() const

Returns a copy of the event column math object. This method must be overriden by all descendents.

Returns:

event copy

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

Returns the evaluated math expression.

Parameters:

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

Returns:

true if successful

Math()

Default constructor.

This class has no child classes.

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