@Internal public class CompensatedSum extends Object implements Serializable
The Kahan summation algorithm (also known as compensated summation) reduces the numerical errors that occur when adding a sequence of finite precision floating point numbers. Numerical errors arise due to truncation and rounding. These errors can lead to numerical instability.
限定符和类型 | 字段和说明 |
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static CompensatedSum |
ZERO |
构造器和说明 |
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CompensatedSum(double value,
double delta)
Used to calculate sums using the Kahan summation algorithm.
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限定符和类型 | 方法和说明 |
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CompensatedSum |
add(CompensatedSum other)
Increments the Kahan sum by adding two sums, and updating the correction term for reducing numeric errors.
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CompensatedSum |
add(double value)
Increments the Kahan sum by adding a value without a correction term.
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CompensatedSum |
add(double value,
double delta)
Increments the Kahan sum by adding a value and a correction term.
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double |
delta()
The correction term.
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double |
value()
The value of the sum.
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public static final CompensatedSum ZERO
public CompensatedSum(double value, double delta)
value
- the sumdelta
- correction termpublic double value()
public double delta()
public CompensatedSum add(double value, double delta)
public CompensatedSum add(double value)
public CompensatedSum add(CompensatedSum other)
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