freegraph
Class ExpressionItem.UnOperator

java.lang.Object
  |
  +--freegraph.ExpressionItem
        |
        +--freegraph.ExpressionItem.UnOperator

Enclosing class:

ExpressionItem

public static class ExpressionItem.UnOperator

extends ExpressionItem

A UnOperator is an ExpressionItem used to hold a all unary operators. (Operators with one operand.) The doOperation method is used by ExpressionEvaluator

Nested Class Summary

Nested classes inherited from class freegraph.ExpressionItem

ExpressionItem.BiOperator, ExpressionItem.Number, ExpressionItem.Parenthesis, ExpressionItem.UnOperator, ExpressionItem.Variable

Field Summary

static int	ABS
static int	COS
static int	EXP
static int	LN
static int	LOG
static int	NEG
static java.lang.String[]	OPERATORS
static int	SIN
static int	SQR
static int	SQRT
static int	TAN

Constructor Summary

ExpressionItem.UnOperator(int kind)

Method Summary

double	doOperation(double x)
int	getAction(ExpressionItem exprItem) Always moves this to the RPN stack.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

SIN

public static final int SIN

See Also:

Constant Field Values

COS

public static final int COS

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Constant Field Values

TAN

public static final int TAN

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Constant Field Values

NEG

public static final int NEG

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Constant Field Values

SQRT

public static final int SQRT

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Constant Field Values

SQR

public static final int SQR

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Constant Field Values

LOG

public static final int LOG

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Constant Field Values

LN

public static final int LN

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Constant Field Values

EXP

public static final int EXP

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Constant Field Values

ABS

public static final int ABS

See Also:

Constant Field Values

OPERATORS

public static final java.lang.String[] OPERATORS

Constructor Detail

ExpressionItem.UnOperator

public ExpressionItem.UnOperator(int kind)

Method Detail

getAction

public int getAction(ExpressionItem exprItem)

Always moves this to the RPN stack.

Specified by:

getAction in class ExpressionItem

doOperation

public double doOperation(double x)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object