Class LegendreHighPrecisionRuleFactory
java.lang.Object
org.apache.commons.math3.analysis.integration.gauss.BaseRuleFactory<BigDecimal>
org.apache.commons.math3.analysis.integration.gauss.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
Abramowitz and Stegun, 1964.
- Since:
- 3.1
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Constructor Summary
ConstructorsConstructorDescriptionDefault precision isDECIMAL128.LegendreHighPrecisionRuleFactory(MathContext mContext) -
Method Summary
Modifier and TypeMethodDescriptionprotected 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
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Constructor Details
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LegendreHighPrecisionRuleFactory
public LegendreHighPrecisionRuleFactory()Default precision isDECIMAL128. -
LegendreHighPrecisionRuleFactory
- Parameters:
mContext- Precision setting for computing the quadrature rules.
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Method Details
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computeRule
protected Pair<BigDecimal[],BigDecimal[]> computeRule(int numberOfPoints) throws DimensionMismatchException Computes the rule for the given order.- Specified by:
computeRulein classBaseRuleFactory<BigDecimal>- Parameters:
numberOfPoints- Order of the rule to be computed.- Returns:
- the computed rule.
- Throws:
DimensionMismatchException- if the elements of the pair do not have the same length.
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