org.norther.tammi.acorn.lang
Class Equation

java.lang.Object
  java.lang.Number
      org.norther.tammi.acorn.lang.Equation

All Implemented Interfaces:

Serializable, Comparable

Direct Known Subclasses:

Average, Product, Sum

public abstract class Equation
extends Number
implements Comparable

A numeric equation.

Author:

Ilkka Priha

See Also:

Serialized Form

Constructor Summary

Equation(byte[] operands)
Constructs a new byte equation.

Equation(double[] operands)
Constructs a new double equation.

Equation(double[] operands, boolean ignoreNaNs)
Constructs a new double equation.

Equation(float[] operands)
Constructs a new float equation.

Equation(float[] operands, boolean ignoreNaNs)
Constructs a new float equation.

Equation(int[] operands)
Constructs a new int equation.

Equation(long[] operands)
Constructs a new long equation.

Equation(short[] operands)
Constructs a new short equation.

Method Summary

byte	byteValue()
byte	byteValue(int index) Gets the indexed byte operand.
protected abstract Number	calculate(Object operands, int length, boolean ignoreNaNs) Calculates the result.
int	compareTo(Object obj)
double	doubleValue()
double	doubleValue(int index) Gets the indexed double operand.
boolean	equals(Object obj)
float	floatValue()
float	floatValue(int index) Gets the indexed float operand.
int	getLength() Gets the length of the equation.
Class	getOperandType() Gets the type of operands.
Number	getResult() Gets the result.
int	intValue()
int	intValue(int index) Gets the indexed int operand.
protected boolean	isFloatingPoint(Object operands) Checks whether the operands are floating point numbers.
long	longValue()
long	longValue(int index) Gets the indexed long operand.
short	shortValue()
short	shortValue(int index) Gets the indexed short operand.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Equation

public Equation(byte[] operands)

Constructs a new byte equation.

Parameters:

operands - the operands.

Equation

public Equation(short[] operands)

Constructs a new short equation.

Parameters:

operands - the operands.

Equation

public Equation(int[] operands)

Constructs a new int equation.

Parameters:

operands - the operands.

Equation

public Equation(long[] operands)

Constructs a new long equation.

Parameters:

operands - the operands.

Equation

public Equation(float[] operands)

Constructs a new float equation.

Parameters:

operands - the operands.

Equation

public Equation(float[] operands,
                boolean ignoreNaNs)

Constructs a new float equation.

Parameters:

operands - the operands.

ignoreNaNs - ignore NaNs if true.

Equation

public Equation(double[] operands)

Constructs a new double equation.

Parameters:

operands - the operands.

Equation

public Equation(double[] operands,
                boolean ignoreNaNs)

Constructs a new double equation.

Parameters:

operands - the operands.

ignoreNaNs - ignore NaNs if true.

Method Detail

getResult

public Number getResult()

Gets the result.

Returns:

the result.

getOperandType

public Class getOperandType()

Gets the type of operands.

Returns:

the operand class type.

getLength

public int getLength()

Gets the length of the equation.

Returns:

the number of operands.

byteValue

public byte byteValue(int index)

Gets the indexed byte operand.

Parameters:

index - the index.

Returns:

the byte operand.

shortValue

public short shortValue(int index)

Gets the indexed short operand.

Parameters:

index - the index.

Returns:

the short operand.

intValue

public int intValue(int index)

Gets the indexed int operand.

Parameters:

index - the index.

Returns:

the int operand.

longValue

public long longValue(int index)

Gets the indexed long operand.

Parameters:

index - the index.

Returns:

the long operand.

floatValue

public float floatValue(int index)

Gets the indexed float operand.

Parameters:

index - the index.

Returns:

the float operand.

doubleValue

public double doubleValue(int index)

Gets the indexed double operand.

Parameters:

index - the index.

Returns:

the double operand.

byteValue

public byte byteValue()

Overrides:

byteValue in class Number

shortValue

public short shortValue()

Overrides:

shortValue in class Number

intValue

public int intValue()

Specified by:

intValue in class Number

longValue

public long longValue()

Specified by:

longValue in class Number

floatValue

public float floatValue()

Specified by:

floatValue in class Number

doubleValue

public double doubleValue()

Specified by:

doubleValue in class Number

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

compareTo

public int compareTo(Object obj)

Specified by:

compareTo in interface Comparable

isFloatingPoint

protected boolean isFloatingPoint(Object operands)

Checks whether the operands are floating point numbers.

Parameters:

operands - the operands.

Returns:

true for floating point, false otherwise.

calculate

protected abstract Number calculate(Object operands,
                                    int length,
                                    boolean ignoreNaNs)

Calculates the result.

Parameters:

operands - an array of operands.

length - the number of operands.

ignoreNaNs - ignore NaNs if true.

Returns:

the result of the equation.