Package com.esri.core.geometry
Class MathUtils.KahanSummator
- java.lang.Object
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- com.esri.core.geometry.MathUtils.KahanSummator
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- Enclosing class:
- MathUtils
static final class MathUtils.KahanSummator extends java.lang.Object
The implementation of the Kahan summation algorithm. Use to get better precision when adding a lot of values.
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Field Summary
Fields Modifier and Type Field Description private double
compensation
private double
startValue
private double
sum
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Constructor Summary
Constructors Constructor Description KahanSummator(double startValue_)
initialize to the given start value.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description (package private) void
add(double v)
add a value.(package private) void
add(MathUtils.KahanSummator v)
add another summator.(package private) double
getResult()
Returns current value of the sum.(package private) MathUtils.KahanSummator
minusEquals(double v)
(package private) MathUtils.KahanSummator
minusEquals(MathUtils.KahanSummator v)
(package private) MathUtils.KahanSummator
plusEquals(double v)
(package private) MathUtils.KahanSummator
plusEquals(MathUtils.KahanSummator v)
(package private) void
reset()
Resets the accumulated sum to zero.(package private) void
sub(double v)
Subtracts a value.(package private) void
sub(MathUtils.KahanSummator v)
Subtracts another summator.
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Method Detail
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reset
void reset()
Resets the accumulated sum to zero. The getResult() returns startValue_ after this call.
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add
void add(double v)
add a value.
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sub
void sub(double v)
Subtracts a value.
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add
void add(MathUtils.KahanSummator v)
add another summator.
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sub
void sub(MathUtils.KahanSummator v)
Subtracts another summator.
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getResult
double getResult()
Returns current value of the sum.
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plusEquals
MathUtils.KahanSummator plusEquals(double v)
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minusEquals
MathUtils.KahanSummator minusEquals(double v)
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plusEquals
MathUtils.KahanSummator plusEquals(MathUtils.KahanSummator v)
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minusEquals
MathUtils.KahanSummator minusEquals(MathUtils.KahanSummator v)
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