org.openjdk.jmc.common.unit

Class ImpreciseScaleFactor

java.lang.Object

org.openjdk.jmc.common.unit.ScaleFactor

org.openjdk.jmc.common.unit.ImpreciseScaleFactor

All Implemented Interfaces:

java.lang.Comparable<ScaleFactor>, IScalarAffineTransform

public class ImpreciseScaleFactor
extends ScaleFactor

Quick and dirty ScaleFactor implementation. Should be replaced with more precise (rational) converters.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.Number	numberFactor

Constructor Summary

Constructors

Constructor and Description
ImpreciseScaleFactor(java.lang.Number factor)

Method Summary

Modifier and Type	Method and Description
ScaleFactor	concat(ScaleFactor innerFactor) Concatenate (that is, multiply) this scale factor with innerFactor.
boolean	equals(java.lang.Object other)
double	getMultiplier()
int	hashCode()
ScaleFactor	invert()
boolean	isInteger()
boolean	isUnity()
long	targetFloor(long srcNumericalValue)
java.lang.Number	targetNumber(long srcNumericalValue)
java.lang.Number	targetNumber(java.lang.Number srcNumericalValue)
boolean	targetOutOfRange(double srcNumericalValue, long maxAbsValue)
boolean	targetOutOfRange(long srcNumericalValue, long maxAbsValue)
double	targetValue(double srcNumericalValue)
long	targetValue(long srcNumericalValue)
java.lang.String	toString()

Methods inherited from class org.openjdk.jmc.common.unit.ScaleFactor

compareTo, concat, getOffset, invertAndConcat, invertAndConcat, targetFloor, targetIntFloor

Methods inherited from class java.lang.Object

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

Field Detail

numberFactor

private final java.lang.Number numberFactor

Constructor Detail

ImpreciseScaleFactor

public ImpreciseScaleFactor(java.lang.Number factor)

Method Detail

concat

public ScaleFactor concat(ScaleFactor innerFactor)

Description copied from class: ScaleFactor

Concatenate (that is, multiply) this scale factor with innerFactor. This is just a special case of ScaleFactor.concat(IScalarAffineTransform).

Specified by:

concat in class ScaleFactor

Returns:

the combined scale factor

See Also:

ScaleFactor.concat(IScalarAffineTransform)

invert

public ScaleFactor invert()

Specified by:

invert in interface IScalarAffineTransform

Specified by:

invert in class ScaleFactor

Returns:

the inverse transform

targetOutOfRange

public boolean targetOutOfRange(long srcNumericalValue,
                                long maxAbsValue)

targetOutOfRange

public boolean targetOutOfRange(double srcNumericalValue,
                                long maxAbsValue)

targetValue

public double targetValue(double srcNumericalValue)

Parameters:

srcNumericalValue - a numerical quantity value, expressed in the source unit

Returns:

the corresponding numerical quantity value, when expressed in the target unit

targetValue

public long targetValue(long srcNumericalValue)

Parameters:

srcNumericalValue - a numerical quantity value, expressed in the source unit

Returns:

the corresponding numerical quantity value, when expressed in the target unit, rounded to the closest integer that can be represented by a long

targetFloor

public long targetFloor(long srcNumericalValue)

Parameters:

srcNumericalValue - a numerical quantity value, expressed in the source unit

Returns:

the floor of the corresponding numerical quantity value, when expressed in the target unit, clamped to a long

targetNumber

public java.lang.Number targetNumber(long srcNumericalValue)

Specified by:

targetNumber in interface IScalarAffineTransform

Overrides:

targetNumber in class ScaleFactor

Parameters:

srcNumericalValue - an exact numerical quantity value, expressed in the source unit

Returns:

the corresponding numerical quantity value, when expressed in the target unit, as a Long if it can exactly be represented in one, otherwise as some other Number with at least the precision of double

targetNumber

public java.lang.Number targetNumber(java.lang.Number srcNumericalValue)

Specified by:

targetNumber in interface IScalarAffineTransform

Overrides:

targetNumber in class ScaleFactor

Parameters:

srcNumericalValue - an exact or inexact numerical quantity value, expressed in the source unit

Returns:

the corresponding numerical quantity value, when expressed in the target unit, as a Long if it can exactly be represented in one, otherwise as some other Number with at least the precision of double

isUnity

public boolean isUnity()

Returns:

true iff this represents the identity transform

isInteger

public boolean isInteger()

Returns:

true iff this transform can exactly be described by an integer multiplier followed by an integer offset

equals

public boolean equals(java.lang.Object other)

Specified by:

equals in class ScaleFactor

hashCode

public int hashCode()

Specified by:

hashCode in class ScaleFactor

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getMultiplier

public double getMultiplier()

Returns:

the multiplier which source values should be multiplied with (before the offset is added)