org.extex.core.scaled
Class ScaledNumber

java.lang.Object
  org.extex.core.scaled.ScaledNumber

public class ScaledNumber
extends java.lang.Object

This class provides a fixed point number.

Version:

$Revision: 4404 $

Author:

Gerd Neugebauer

Field Summary

static long

ONE The constant ONE contains the internal representation for 1pt.

Constructor Summary

ScaledNumber()
Creates a new object.

ScaledNumber(long value)
Creates a new object.

Method Summary

void	add(long scaled) Add a number to the current one.
void	add(ScaledNumber scaled) Add a number to the current one.
void	divide(long scaled) Divide the scaled value by a number.
boolean	eq(ScaledNumber d) Compares the current instance with another ScaledNumber for equality.
boolean	ge(ScaledNumber d) Compares the current instance with another ScaledNumber.
long	getValue() Getter for the value.
boolean	le(ScaledNumber d) Compares the current instance with another ScaledNumber.
boolean	lt(ScaledNumber d) Compares the current instance with another ScaledNumber.
void	multiply(long scaled) Multiply the current value by a scaled number.
void	multiply(long nom, long denom) Multiply the value by an integer fraction.
void	negate() Negate the current value.
void	set(long scaled) Set the value to a new one
void	set(ScaledNumber scaled) Setter for the value
void	subtract(ScaledNumber scaled) Subtract a number from the current one.
java.lang.String	toString() Determine the printable representation of the object.
static void	toString(java.lang.StringBuffer sb, long value) Determine the printable representation of the object and append it to the given StringBuffer.

Methods inherited from class java.lang.Object

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

Field Detail

ONE

public static final long ONE

The constant ONE contains the internal representation for 1pt.

See Also:

"TeX – The Program [101]", Constant Field Values

Constructor Detail

ScaledNumber

public ScaledNumber()

Creates a new object.

ScaledNumber

public ScaledNumber(long value)

Creates a new object.

Parameters:

value - the initial value

Method Detail

toString

public static void toString(java.lang.StringBuffer sb,
                            long value)

Determine the printable representation of the object and append it to the given StringBuffer.

Parameters:

sb - the output string buffer

value - the internal value in multiples of ONE

add

public void add(long scaled)

Add a number to the current one.

Parameters:

scaled - the number to add

add

public void add(ScaledNumber scaled)

Add a number to the current one.

Parameters:

scaled - the number to add

divide

public void divide(long scaled)

Divide the scaled value by a number.

Parameters:

scaled - the divisor

eq

public boolean eq(ScaledNumber d)

Compares the current instance with another ScaledNumber for equality.

Parameters:

d - the other ScaledNumber to compare to. If this parameter is null then the comparison fails.

Returns:

true iff |this| == |d|

ge

public boolean ge(ScaledNumber d)

Compares the current instance with another ScaledNumber.

Parameters:

d - the other ScaledNumber to compare to

Returns:

true iff this is greater or equal to d

getValue

public long getValue()

Getter for the value.

Returns:

the value

le

public boolean le(ScaledNumber d)

Compares the current instance with another ScaledNumber.

Parameters:

d - the other ScaledNumber to compare to

Returns:

true iff this is less or equal to d

lt

public boolean lt(ScaledNumber d)

Compares the current instance with another ScaledNumber.

Parameters:

d - the other ScaledNumber to compare to

Returns:

true iff |this| < |d|

multiply

public void multiply(long scaled)

Multiply the current value by a scaled number.

Parameters:

scaled - the multiplicant

multiply

public void multiply(long nom,
                     long denom)

Multiply the value by an integer fraction.

length = length * nom / denom

Parameters:

nom - nominator

denom - denominator

negate

public void negate()

Negate the current value.

set

public void set(long scaled)

Set the value to a new one

Parameters:

scaled - the new value

set

public void set(ScaledNumber scaled)

Setter for the value

Parameters:

scaled - the new value

subtract

public void subtract(ScaledNumber scaled)

Subtract a number from the current one.

Parameters:

scaled - the number to subtract

toString

public java.lang.String toString()

Determine the printable representation of the object.

Overrides:

toString in class java.lang.Object

Returns:

the printable representation