javax.measure.converter
public final class AddConverter extends UnitConverter
This class represents a converter adding a constant offset (approximated as a double
) to numeric values.
Instances of this class are immutable.
IDENTITY
Constructor and Description |
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AddConverter(double offset)
Creates an add converter with the specified offset.
|
Modifier and Type | Method and Description |
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UnitConverter |
concatenate(UnitConverter converter)
Concatenates this converter with another converter.
|
double |
convert(double amount)
Converts a double value.
|
double |
getOffset()
Returns the offset value for this add converter.
|
UnitConverter |
inverse()
Returns the inverse of this converter.
|
boolean |
isLinear()
Indicates if this converter is linear.
|
equals, hashCode
public AddConverter(double offset)
offset
- the offset value.java.lang.IllegalArgumentException
- if offset is zero (or close to zero).public double getOffset()
public UnitConverter inverse()
UnitConverter
x
is a valid value, then
x == inverse().convert(convert(x))
to within the accuracy of computer arithmetic.inverse
in class UnitConverter
public double convert(double amount)
UnitConverter
convert
in class UnitConverter
amount
- the numeric value to convert.public boolean isLinear()
UnitConverter
convert(u + v) == convert(u) + convert(v)
and convert(r * u) == r * convert(u)
. For
linear converters the following property always hold:[code] y1 = c1.convert(x1); y2 = c2.convert(x2); then y1*y2
= c1.concatenate(c2).convert(x1*x2)[/code]isLinear
in class UnitConverter
true
if this converter is linear; false
otherwise.public UnitConverter concatenate(UnitConverter converter)
UnitConverter
Note: Implementations must ensure that the UnitConverter.IDENTITY
instance is returned if the resulting converter is
an identity converter.
concatenate
in class UnitConverter
converter
- the other converter.