gnu.math

Class DFloNum

java.lang.Object

java.lang.Number

gnu.math.Numeric

gnu.math.Quantity

gnu.math.Complex

gnu.math.RealNum

gnu.math.DFloNum

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Comparable

public class DFloNum
extends RealNum
implements java.io.Externalizable

See Also:

Serialized Form

Field Summary

Fields inherited from class gnu.math.Numeric

CEILING, FLOOR, NONNEG_MOD, ROUND, TRUNCATE

Constructor Summary

Constructors

Constructor and Description
DFloNum()
DFloNum(double value)
DFloNum(java.lang.String s)

Method Summary

Methods

Modifier and Type	Method and Description
Numeric	add(java.lang.Object y, int k) Return this + k * obj.
Numeric	addReversed(Numeric x, int k) Calculate x+k&this.
static DFloNum	asDFloNumOrNull(java.lang.Object value)
static int	compare(double x, double y)
static int	compare(IntNum x_num, IntNum x_den, double y) Compare (x_num/x_den) with toExact(y).
int	compare(java.lang.Object obj) Return an integer for which of this or obj is larger.
int	compareReversed(Numeric x)
Numeric	div(java.lang.Object y)
Numeric	divReversed(Numeric x)
double	doubleValue() The value of the real component, as a double.
boolean	equals(java.lang.Object obj)
int	hashCode()
boolean	isExact()
boolean	isNegative()
boolean	isZero()
long	longValue()
static DFloNum	make(double value)
Numeric	mul(java.lang.Object y)
Numeric	mulReversed(Numeric x)
Numeric	neg()
static DFloNum	one()
Numeric	power(IntNum y) Return this raised to an integer power.
void	readExternal(java.io.ObjectInput in)
int	sign() Return 1 if >0; 0 if ==0; -1 if <0; -2 if NaN.
static RatNum	toExact(double value) Converts to the closest exact rational value.
java.lang.String	toString()
java.lang.String	toString(int radix)
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class gnu.math.RealNum

abs, add, asBigDecimal, asRealNumOrNull, compareTo, divide, exp, im, log, max, min, re, rneg, sin, sqrt, times, toExact, toExactInt, toExactInt, toExactInt, toInexact, toInt, toInt, toScaledInt, toScaledInt, toScaledInt, toStringDecimal, toStringScientific, toStringScientific, toStringScientific, toStringScientific

Methods inherited from class gnu.math.Complex

add, angle, compare, divide, doubleImagValue, doubleRealValue, equals, imMinusOne, imOne, make, make, neg, number, polar, polar, power, times

Methods inherited from class gnu.math.Quantity

add, compare, dimensions, divide, imValue, make, make, make, reValue, times, unit

Methods inherited from class gnu.math.Numeric

add, asNumericOrNull, div_inv, floatValue, geq, grt, intValue, mul_ident, sub

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Constructor Detail

DFloNum

public DFloNum()

DFloNum

public DFloNum(double value)

DFloNum

public DFloNum(java.lang.String s)
        throws java.lang.NumberFormatException

Throws:

java.lang.NumberFormatException

Method Detail

make

public static DFloNum make(double value)

asDFloNumOrNull

public static DFloNum asDFloNumOrNull(java.lang.Object value)

doubleValue

public final double doubleValue()

Description copied from class: Quantity

The value of the real component, as a double. This is relative to the unit().dims - i.e. unit()/doubleValue() is factored in.

Overrides:

doubleValue in class Complex

longValue

public long longValue()

Overrides:

longValue in class Complex

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class Complex

add

public Numeric add(java.lang.Object y,
          int k)

Description copied from class: Numeric

Return this + k * obj.

Specified by:

add in class RealNum

addReversed

public Numeric addReversed(Numeric x,
                  int k)

Description copied from class: Numeric

Calculate x+k&this.

Overrides:

addReversed in class Complex

mul

public Numeric mul(java.lang.Object y)

Specified by:

mul in class RealNum

mulReversed

public Numeric mulReversed(Numeric x)

Overrides:

mulReversed in class Complex

one

public static final DFloNum one()

div

public Numeric div(java.lang.Object y)

Specified by:

div in class RealNum

divReversed

public Numeric divReversed(Numeric x)

Overrides:

divReversed in class Complex

power

public Numeric power(IntNum y)

Description copied from class: Numeric

Return this raised to an integer power. Implemented by repeated squaring and multiplication. If y < 0, returns div_inv of the result.

Overrides:

power in class Numeric

isNegative

public boolean isNegative()

Specified by:

isNegative in class RealNum

neg

public Numeric neg()

Overrides:

neg in class Complex

sign

public int sign()

Description copied from class: RealNum

Return 1 if >0; 0 if ==0; -1 if <0; -2 if NaN.

Specified by:

sign in class RealNum

compare

public static int compare(double x,
          double y)

compare

public static int compare(IntNum x_num,
          IntNum x_den,
          double y)

Compare (x_num/x_den) with toExact(y).

compare

public int compare(java.lang.Object obj)

Description copied from class: Numeric

Return an integer for which of this or obj is larger. Return 1 if this>obj; 0 if this==obj; -1 if this<obj; -2 if this!=obj otherwise (for example if either is NaN); -3 if not comparable (incompatible types).

Overrides:

compare in class Complex

compareReversed

public int compareReversed(Numeric x)

Overrides:

compareReversed in class Quantity

isExact

public boolean isExact()

Overrides:

isExact in class Complex

isZero

public boolean isZero()

Overrides:

isZero in class RealNum

toExact

public static RatNum toExact(double value)

Converts to the closest exact rational value.

toString

public java.lang.String toString()

Overrides:

toString in class Numeric

toString

public java.lang.String toString(int radix)

Overrides:

toString in class Complex

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Specified by:

writeExternal in interface java.io.Externalizable

Throws:

java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Specified by:

readExternal in interface java.io.Externalizable

Throws:

java.io.IOException

java.lang.ClassNotFoundException