java.lang
Class FloatingDecimal

java.lang.Object
  java.lang.FloatingDecimal

class FloatingDecimal

extends Object

Field Summary

private static FDBigInt[]	b5p
private static double[]	big10pow
(package private) static int	bigDecimalExponent
(package private) int	bigIntExp
(package private) int	bigIntNBits
(package private) int	decExponent
(package private) char[]	digits
(package private) static int	expBias
(package private) static long	expMask
(package private) static long	expOne
(package private) static int	expShift
(package private) static long	fractHOB
(package private) static long	fractMask
(package private) static long	highbit
(package private) static long	highbyte
private static char[]	infinity
(package private) static int	intDecimalDigits
(package private) boolean	isExceptional
(package private) boolean	isNegative
private static long[]	long5pow
(package private) static long	lowbytes
(package private) static int	maxDecimalDigits
(package private) static int	maxDecimalExponent
(package private) static int	maxSmallBinExp
private static int	maxSmallTen
(package private) static int	minDecimalExponent
(package private) static int	minSmallBinExp
(package private) boolean	mustSetRoundDir
private static int[]	n5bits
(package private) int	nDigits
private static char[]	notANumber
private static ThreadLocal	perThreadBuffer
(package private) int	roundDir
(package private) static long	signMask
(package private) static int	singleExpBias
(package private) static int	singleExpMask
(package private) static int	singleExpShift
(package private) static int	singleFractHOB
(package private) static int	singleFractMask
(package private) static int	singleMaxDecimalDigits
(package private) static int	singleMaxDecimalExponent
private static int	singleMaxSmallTen
(package private) static int	singleMinDecimalExponent
(package private) static int	singleSignMask
private static float[]	singleSmall10pow
private static double[]	small10pow
private static int[]	small5pow
private static double[]	tiny10pow
private static char[]	zero

Constructor Summary

private	FloatingDecimal(boolean negSign, int decExponent, char[] digits, int n, boolean e)
	FloatingDecimal(double d)
	FloatingDecimal(float f)

Method Summary

(package private) void	appendTo(StringBuffer buf)
private static FDBigInt	big5pow(int p)
private static FDBigInt	constructPow52(int p5, int p2)
private static int	countBits(long v)
private void	developLongDigits(int decExponent, long lvalue, long insignificant)
private FDBigInt	doubleToBigInt(double dval)
double	doubleValue()
private void	dtoa(int binExp, long fractBits, int nSignificantBits)
float	floatValue()
private int	getChars(char[] result)
private static FDBigInt	multPow52(FDBigInt v, int p5, int p2)
static FloatingDecimal	readJavaFormatString(String in)
private void	roundup()
(package private) float	stickyRound(double dval)
String	toJavaFormatString()
String	toString() Returns a string representation of the object.
private static double	ulp(double dval, boolean subtracting)

Methods inherited from class java.lang.Object

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

Field Detail

isExceptional

boolean isExceptional

isNegative

boolean isNegative

decExponent

int decExponent

digits

char[] digits

nDigits

int nDigits

bigIntExp

int bigIntExp

bigIntNBits

int bigIntNBits

mustSetRoundDir

boolean mustSetRoundDir

roundDir

int roundDir

signMask

static final long signMask

See Also:

Constant Field Values

expMask

static final long expMask

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Constant Field Values

fractMask

static final long fractMask

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Constant Field Values

expShift

static final int expShift

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Constant Field Values

expBias

static final int expBias

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Constant Field Values

fractHOB

static final long fractHOB

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Constant Field Values

expOne

static final long expOne

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Constant Field Values

maxSmallBinExp

static final int maxSmallBinExp

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Constant Field Values

minSmallBinExp

static final int minSmallBinExp

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Constant Field Values

maxDecimalDigits

static final int maxDecimalDigits

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Constant Field Values

maxDecimalExponent

static final int maxDecimalExponent

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Constant Field Values

minDecimalExponent

static final int minDecimalExponent

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Constant Field Values

bigDecimalExponent

static final int bigDecimalExponent

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Constant Field Values

highbyte

static final long highbyte

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Constant Field Values

highbit

static final long highbit

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Constant Field Values

lowbytes

static final long lowbytes

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Constant Field Values

singleSignMask

static final int singleSignMask

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Constant Field Values

singleExpMask

static final int singleExpMask

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Constant Field Values

singleFractMask

static final int singleFractMask

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Constant Field Values

singleExpShift

static final int singleExpShift

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Constant Field Values

singleFractHOB

static final int singleFractHOB

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Constant Field Values

singleExpBias

static final int singleExpBias

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Constant Field Values

singleMaxDecimalDigits

static final int singleMaxDecimalDigits

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Constant Field Values

singleMaxDecimalExponent

static final int singleMaxDecimalExponent

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Constant Field Values

singleMinDecimalExponent

static final int singleMinDecimalExponent

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Constant Field Values

intDecimalDigits

static final int intDecimalDigits

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Constant Field Values

b5p

private static FDBigInt[] b5p

perThreadBuffer

private static ThreadLocal perThreadBuffer

small10pow

private static final double[] small10pow

singleSmall10pow

private static final float[] singleSmall10pow

big10pow

private static final double[] big10pow

tiny10pow

private static final double[] tiny10pow

maxSmallTen

private static final int maxSmallTen

singleMaxSmallTen

private static final int singleMaxSmallTen

small5pow

private static final int[] small5pow

long5pow

private static final long[] long5pow

n5bits

private static final int[] n5bits

infinity

private static final char[] infinity

notANumber

private static final char[] notANumber

zero

private static final char[] zero

Constructor Detail

FloatingDecimal

private FloatingDecimal(boolean negSign,
                        int decExponent,
                        char[] digits,
                        int n,
                        boolean e)

FloatingDecimal

public FloatingDecimal(double d)

FloatingDecimal

public FloatingDecimal(float f)

Method Detail

countBits

private static int countBits(long v)

big5pow

private static FDBigInt big5pow(int p)

multPow52

private static FDBigInt multPow52(FDBigInt v,
                                  int p5,
                                  int p2)

constructPow52

private static FDBigInt constructPow52(int p5,
                                       int p2)

doubleToBigInt

private FDBigInt doubleToBigInt(double dval)

ulp

private static double ulp(double dval,
                          boolean subtracting)

stickyRound

float stickyRound(double dval)

developLongDigits

private void developLongDigits(int decExponent,
                               long lvalue,
                               long insignificant)

roundup

private void roundup()

dtoa

private void dtoa(int binExp,
                  long fractBits,
                  int nSignificantBits)

toString

public String toString()

Description copied from class: Object

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.

toJavaFormatString

public String toJavaFormatString()

getChars

private int getChars(char[] result)

appendTo

void appendTo(StringBuffer buf)

readJavaFormatString

public static FloatingDecimal readJavaFormatString(String in)
                                            throws NumberFormatException

Throws:

NumberFormatException

doubleValue

public double doubleValue()

floatValue

public float floatValue()