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java.lang.Objectorg.apache.commons.math3.analysis.integration.gauss.BaseRuleFactory<BigDecimal>
org.apache.commons.math3.analysis.integration.gauss.LegendreHighPrecisionRuleFactory
public class LegendreHighPrecisionRuleFactory
Factory that creates Gauss-type quadrature rule using Legendre polynomials.
In this implementation, the lower and upper bounds of the natural interval
of integration are -1 and 1, respectively.
The Legendre polynomials are evaluated using the recurrence relation
presented in .
Field Summary | |
---|---|
private MathContext |
mContext
Settings for enhanced precision computations. |
private BigDecimal |
minusOne
The number -1 . |
private BigDecimal |
oneHalf
The number 0.5 . |
private BigDecimal |
two
The number 2 . |
Constructor Summary | |
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LegendreHighPrecisionRuleFactory()
Default precision is DECIMAL128 . |
|
LegendreHighPrecisionRuleFactory(MathContext mContext)
|
Method Summary | |
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protected Pair<BigDecimal[],BigDecimal[]> |
computeRule(int numberOfPoints)
Computes the rule for the given order. |
Methods inherited from class org.apache.commons.math3.analysis.integration.gauss.BaseRuleFactory |
---|
addRule, getRule, getRuleInternal |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private final MathContext mContext
private final BigDecimal two
2
.
private final BigDecimal minusOne
-1
.
private final BigDecimal oneHalf
0.5
.
Constructor Detail |
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public LegendreHighPrecisionRuleFactory()
DECIMAL128
.
public LegendreHighPrecisionRuleFactory(MathContext mContext)
mContext
- Precision setting for computing the quadrature rules.Method Detail |
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protected Pair<BigDecimal[],BigDecimal[]> computeRule(int numberOfPoints) throws DimensionMismatchException
computeRule
in class BaseRuleFactory<BigDecimal>
numberOfPoints
- Order of the rule to be computed.
DimensionMismatchException
- if the elements of the pair do not
have the same length.
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