Package gnu.math

Class DQuantity

java.lang.Object

java.lang.Number

gnu.math.Numeric

gnu.math.Quantity

gnu.math.DQuantity

All Implemented Interfaces:

Externalizable, Serializable

public class DQuantity
extends Quantity
implements Externalizable

A Quantity represented as the product of a plain double and a Unit.

See Also:

Serialized Form

Field Summary

Fields inherited from class gnu.math.Numeric

CEILING, FLOOR, NONNEG_MOD, ROUND, TRUNCATE

Constructor Summary

Constructors

Constructor	Description
DQuantity(double factor, Unit unit)

Method Summary

Modifier and Type	Method	Description
static DQuantity	add(DQuantity x, DQuantity y, double k)
Numeric	add(Object y, int k)	Return this + k * obj.
Numeric	addReversed(Numeric x, int k)	Calculate x+k&this.
Numeric	div(Object y)
static DQuantity	divide(DQuantity x, DQuantity y)
Numeric	divReversed(Numeric x)
double	doubleValue()	The value of the real component, as a double.
boolean	isExact()
boolean	isZero()
Numeric	mul(Object y)
Numeric	mulReversed(Numeric x)
Complex	number()
RealNum	re()	The value of the real component, as a RealNum.
void	readExternal(ObjectInput in)
static DQuantity	times(DQuantity x, DQuantity y)
Unit	unit()
void	writeExternal(ObjectOutput out)

Methods inherited from class gnu.math.Quantity

abs, add, compare, compare, compareReversed, dimensions, divide, doubleImagValue, doubleJmagValue, doubleKmagValue, im, imValue, jm, jmValue, km, kmValue, make, make, make, neg, reValue, times, toString

Methods inherited from class gnu.math.Numeric

add, asNumericOrNull, div_inv, equals, floatValue, geq, grt, intValue, longValue, mul_ident, power, sub, toExact, toInexact, toString

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

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

Constructor Detail

DQuantity

public DQuantity(double factor,
                 Unit unit)

Method Detail

unit

public final Unit unit()

Overrides:

unit in class Quantity

number

public final Complex number()

Specified by:

number in class Quantity

re

public final RealNum re()

Description copied from class: Quantity

The value of the real component, as a RealNum. The unit() is not factored in, so you actually need to multiply by unit() to get the true real component.

Overrides:

re in class Quantity

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 Quantity

isExact

public boolean isExact()

Specified by:

isExact in class Numeric

isZero

public boolean isZero()

Specified by:

isZero in class Numeric

add

public static DQuantity add(DQuantity x,
                            DQuantity y,
                            double k)

times

public static DQuantity times(DQuantity x,
                              DQuantity y)

divide

public static DQuantity divide(DQuantity x,
                               DQuantity y)

add

public Numeric add(Object y,
                   int k)

Description copied from class: Numeric

Return this + k * obj.

Overrides:

add in class Quantity

addReversed

public Numeric addReversed(Numeric x,
                           int k)

Description copied from class: Numeric

Calculate x+k&this.

Overrides:

addReversed in class Quantity

mul

public Numeric mul(Object y)

Overrides:

mul in class Quantity

mulReversed

public Numeric mulReversed(Numeric x)

Overrides:

mulReversed in class Quantity

div

public Numeric div(Object y)

Overrides:

div in class Quantity

divReversed

public Numeric divReversed(Numeric x)

Overrides:

divReversed in class Quantity

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException