Package net.sourceforge.uiq3.fx603p

Class Decomposed

java.lang.Object

net.sourceforge.uiq3.fx603p.Decomposed

public final class Decomposed
extends Object

Normalize BCDFloat for further formating

Field Summary

Fields

Modifier and Type	Field	Description
static int	BCD_Length
short	Exponent	Mode_Exponent.
boolean	Exponent_Negative	True is the Mode_Exponent is negative.
static int	L_Exponent	Exponent if an L Register
static int	L_Precision	Precision of an L Register
private static Logger	logger	class logger instance
long	Mantissa	Mantissa (Normalised to : x.xxxxxxxx)
short	Mantissa_Digits	Mantissa Digits.
boolean	Mantissa_Negative	True is the Coefficient is negative.
private static String	TAG	class logger tag.

Constructor Summary

Constructors

Constructor	Description
Decomposed(int[] Bytes)	Create a decomposed double from an BCD floating point byte array.
Decomposed(long Mantissa, boolean Mantissa_Negative, short Mantissa_Digits, short Exponent, boolean Exponent_Negative)	Create a decomposed double from it's components
Decomposed(short[] Text)	Create a decomposed double from a normal double
Decomposed(Number Value, int Digits)	Create a decomposed BCDFloat from a normal BCDFloat

Method Summary

Modifier and Type	Method	Description
BCDFloat	Compose()	Recompose a double from the given data.
@org.jetbrains.annotations.NotNull int[]	Compose_BCD()	Compose an BCD floating point suitable for saving.
private long	From_BCD(int Value)	create a BCD digits for 2 least significant digits of Value
private int	Too_BCD(long Value)	create a BCD digits for 2 least significant digits of Value
String	toString()	Returns a string representation of the object.
void	Trace()	Trace current value
static void	Trace(int[] Buffer)	Trace current value

Methods inherited from class java.lang.Object

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

Field Detail

BCD_Length

public static final int BCD_Length

See Also:

Constant Field Values

L_Exponent

public static final int L_Exponent

Exponent if an L Register

See Also:

Constant Field Values

L_Precision

public static final int L_Precision

Precision of an L Register

See Also:

Constant Field Values

logger

private static final Logger logger

class logger instance

TAG

private static final String TAG

class logger tag.

Exponent

public final short Exponent

Mode_Exponent.

Exponent_Negative

public final boolean Exponent_Negative

True is the Mode_Exponent is negative.

Mantissa

public final long Mantissa

Mantissa (Normalised to : x.xxxxxxxx)

Mantissa_Digits

public final short Mantissa_Digits

Mantissa Digits.

Mantissa_Negative

public final boolean Mantissa_Negative

True is the Coefficient is negative.

Constructor Detail

Decomposed

public Decomposed(int[] Bytes)

Create a decomposed double from an BCD floating point byte array. Note that the Java designers in there great wisdom defined a byte as -128..128 - while in 99% of all cases one need 0..255. Hence we use a int array to pass bytes. As an Ada advocate this mistreatment of datatypes gives me pimples.

Parameters:

Bytes - Text containing a value

Decomposed

Decomposed(long Mantissa,
           boolean Mantissa_Negative,
           short Mantissa_Digits,
           short Exponent,
           boolean Exponent_Negative)

Create a decomposed double from it's components

Parameters:

Mantissa - Mantissa (Normalized to : x.xxxxxxxx)

Mantissa_Negative - True is the Coefficient is negative.

Mantissa_Digits - Mantissa Digits.

Exponent - Exponent to the power of ten

Exponent_Negative - True is the Exponent is negative.

Decomposed

public Decomposed(@NotNull
                  Number Value,
                  int Digits)

Create a decomposed BCDFloat from a normal BCDFloat

Parameters:

Value - Value as BCDFloat

Digits - Round at digits

Decomposed

Decomposed(short[] Text)
    throws Error

Create a decomposed double from a normal double

Parameters:

Text - Text containing a value

Throws:

Error - can't decompose

Method Detail

Trace

public static void Trace(int[] Buffer)

Trace current value

Compose

@NotNull
public final BCDFloat Compose()

Recompose a double from the given data.

Returns:

a double

Compose_BCD

@NotNull
public final @org.jetbrains.annotations.NotNull int[] Compose_BCD()

Compose an BCD floating point suitable for saving. Note that the Java designers in there great wisdom defined a byte as -128..128 - while in 99% of all cases one need 0..255. Hence we use a int array to pass bytes. As an Ada advocate this mistreatment of datatypes gives me pimples.

Returns:

byte array

From_BCD

private long From_BCD(int Value)

create a BCD digits for 2 least significant digits of Value

Parameters:

Value - value to create digits from

Returns:

BCD value

Too_BCD

private int Too_BCD(long Value)

create a BCD digits for 2 least significant digits of Value

Parameters:

Value - value to create digits from

Returns:

BCD value

toString

@TestOnly
public String toString()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character ` @', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass ().getName () + '@' + Integer.toHexString (hashCode ())
 

Overrides:

toString in class Object

Returns:

a string representation of the object.

Trace

public void Trace()

Trace current value