java.lang.Object
- java.lang.Number
- - gnu.math.Numeric
  - - gnu.math.Quantity

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

CQuantity, DateTime, DQuantity, Duration, Quaternion, Unit
```
public abstract class Quantity
extends Numeric
```
A quantity with a unit. This generalizes the DSSSL quantity type (to more than lengths).

See Also:

Serialized Form

Field Summary
- Fields inherited from class gnu.math.Numeric
  CEILING, FLOOR, NONNEG_MOD, ROUND, TRUNCATE

Constructor Summary

Constructors
Constructor Description

Quantity()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`Numeric`	`abs()`
`static Quantity`	`add(Quantity x, Quantity y, int k)`
`Numeric`	`add(Object y, int k)`	Return this + k * obj.
`Numeric`	`addReversed(Numeric x, int k)`	Calculate `x+k&this`.
`static int`	`compare(Quantity x, Quantity y)`
`int`	`compare(Object obj)`	Return an integer for which of `this` or `obj` is larger.
`int`	`compareReversed(Numeric x)`
`Dimensions`	`dimensions()`
`Numeric`	`div(Object y)`
`static Quantity`	`divide(Quantity x, Quantity y)`
`Numeric`	`divReversed(Numeric x)`
`double`	`doubleImagValue()`	The value of the imaginary component, as a double.
`double`	`doubleJmagValue()`	The value of the "j" component, as a double.
`double`	`doubleKmagValue()`	The value of the "k" component, as a double.
`double`	`doubleValue()`	The value of the real component, as a double.
`RealNum`	`im()`	The value of the imaginary component, as a RealNum.
`double`	`imValue()`	The value of the imaginary component, as a double.
`RealNum`	`jm()`	The value of the "j" component, as a RealNum.
`double`	`jmValue()`	The value of the "j" component, as a double.
`RealNum`	`km()`	The value of the "k" component, as a RealNum.
`double`	`kmValue()`	The value of the "k" component, as a double.
`static Quantity`	`make(double re, double im, double jm, double km, Unit unit)`
`static Quantity`	`make(Quaternion x, Unit u)`
`static Quantity`	`make(RealNum re, RealNum im, RealNum jm, RealNum km, Unit unit)`
`Numeric`	`mul(Object y)`
`Numeric`	`mulReversed(Numeric x)`
`Numeric`	`neg()`
`abstract Quaternion`	`number()`
`RealNum`	`re()`	The value of the real component, as a RealNum.
`double`	`reValue()`	The value of the real component, as a double.
`static Quantity`	`times(Quantity x, Quantity y)`
`String`	`toString(int radix)`
`Unit`	`unit()`

Methods inherited from class gnu.math.Numeric
add, asNumericOrNull, div_inv, equals, floatValue, geq, grt, intValue, isExact, isZero, 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
  - Quantity
```
public Quantity()
```
- Method Detail
  - unit
```
public Unit unit()
```
  - dimensions
```
public Dimensions dimensions()
```
  - number
```
public abstract Quaternion number()
```
  - re
```
public RealNum re()
```
    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.
  - im
```
public RealNum im()
```
    The value of the imaginary component, as a RealNum. The unit() is not factored in, so you actually need to multiply by unit() to get the true imaginary component.
  - jm
```
public RealNum jm()
```
    The value of the "j" component, as a RealNum. The unit() is not factored in, so you actually need to multiply by unit() to get the true "j" component.
  - km
```
public RealNum km()
```
    The value of the "k" component, as a RealNum. The unit() is not factored in, so you actually need to multiply by unit() to get the true "k" component.
  - reValue
```
public final double reValue()
```
    The value of the real component, as a double. This is relative to the unit().dims - i.e. unit().doubleValue() is factored in. A final alias for the virtual doubleValue.
  - imValue
```
public final double imValue()
```
    The value of the imaginary component, as a double. This is relative to the unit().dims - i.e. unit().doubleValue() is factored in. A final alias for the virtual doubleImagValue.
  - jmValue
```
public final double jmValue()
```
    The value of the "j" component, as a double. This is relative to the unit().dims - i.e. unit().doubleValue() is factored in. A final alias for the virtual doubleJmagValue.
  - kmValue
```
public final double kmValue()
```
    The value of the "k" component, as a double. This is relative to the unit().dims - i.e. unit().doubleValue() is factored in. A final alias for the virtual doubleKmagValue.
  - doubleValue
```
public double doubleValue()
```
    The value of the real component, as a double. This is relative to the unit().dims - i.e. unit()/doubleValue() is factored in.
    
    Specified by:
    
    doubleValue in class Number
  - doubleImagValue
```
public double doubleImagValue()
```
    The value of the imaginary component, as a double. This is relative to the unit().dims - i.e. unit()/doubleValue() is factored in.
  - doubleJmagValue
```
public double doubleJmagValue()
```
    The value of the "j" component, as a double. This is relative to the unit().dims - i.e. unit()/doubleValue() is factored in.
  - doubleKmagValue
```
public double doubleKmagValue()
```
    The value of the "k" component, as a double. This is relative to the unit().dims - i.e. unit()/doubleValue() is factored in.
  - make
```
public static Quantity make(Quaternion x,
                            Unit u)
```
  - make
```
public static Quantity make(RealNum re,
                            RealNum im,
                            RealNum jm,
                            RealNum km,
                            Unit unit)
```
  - make
```
public static Quantity make(double re,
                            double im,
                            double jm,
                            double km,
                            Unit unit)
```
  - neg
```
public Numeric neg()
```
    Specified by:
    
    neg in class Numeric
  - abs
```
public Numeric abs()
```
    Specified by:
    
    abs in class Numeric
  - compare
```
public static int compare(Quantity x,
                          Quantity y)
```
  - compare
```
public int compare(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 Numeric
  - compareReversed
```
public int compareReversed(Numeric x)
```
    Overrides:
    
    compareReversed in class Numeric
  - add
```
public static Quantity add(Quantity x,
                           Quantity y,
                           int k)
```
  - add
```
public Numeric add(Object y,
                   int k)
```
    Description copied from class: Numeric
    
    Return this + k * obj.
    
    Specified by:
    
    add in class Numeric
  - addReversed
```
public Numeric addReversed(Numeric x,
                           int k)
```
    Description copied from class: Numeric
    
    Calculate x+k&this.
    
    Overrides:
    
    addReversed in class Numeric
  - times
```
public static Quantity times(Quantity x,
                             Quantity y)
```
  - mul
```
public Numeric mul(Object y)
```
    Specified by:
    
    mul in class Numeric
  - mulReversed
```
public Numeric mulReversed(Numeric x)
```
    Overrides:
    
    mulReversed in class Numeric
  - divide
```
public static Quantity divide(Quantity x,
                              Quantity y)
```
  - div
```
public Numeric div(Object y)
```
    Specified by:
    
    div in class Numeric
  - divReversed
```
public Numeric divReversed(Numeric x)
```
    Overrides:
    
    divReversed in class Numeric
  - toString
```
public String toString(int radix)
```
    Specified by:
    
    toString in class Numeric

Class Quantity

Field Summary

Fields inherited from class gnu.math.Numeric

Constructor Summary

Method Summary

Methods inherited from class gnu.math.Numeric

Methods inherited from class java.lang.Number

Methods inherited from class java.lang.Object

Constructor Detail

Quantity

Method Detail

unit

dimensions

number

re

im

jm

km

reValue

imValue

jmValue

kmValue

doubleValue

doubleImagValue

doubleJmagValue

doubleKmagValue

make

make

make

neg

abs

compare

compare

compareReversed

add

add

addReversed

times

mul

mulReversed

divide

div

divReversed

toString