LegendreHighPrecisionRuleFactory (Apache Commons Math 4.0-beta1)

java.lang.Object
- org.apache.commons.math4.legacy.analysis.integration.gauss.BaseRuleFactory<BigDecimal>
- - org.apache.commons.math4.legacy.analysis.integration.gauss.LegendreHighPrecisionRuleFactory

```
public class LegendreHighPrecisionRuleFactory
extends BaseRuleFactory<BigDecimal>
```
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

Constructor Summary

Constructors
Constructor Description

LegendreHighPrecisionRuleFactory()
Default precision is DECIMAL128.

LegendreHighPrecisionRuleFactory(MathContext mContext)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected Pair<BigDecimal[],BigDecimal[]>`	`computeRule(int numberOfPoints)`	Computes the rule for the given order.

Methods inherited from class org.apache.commons.math4.legacy.analysis.integration.gauss.BaseRuleFactory
addRule, getRule, getRuleInternal

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LegendreHighPrecisionRuleFactory
```
public LegendreHighPrecisionRuleFactory()
```
    Default precision is DECIMAL128.
  - LegendreHighPrecisionRuleFactory
```
public LegendreHighPrecisionRuleFactory(MathContext mContext)
```
    Parameters:
    
    mContext - Precision setting for computing the quadrature rules.
- Method Detail
  - computeRule
```
protected Pair<BigDecimal[],BigDecimal[]> computeRule(int numberOfPoints)
```
    Computes the rule for the given order.
    
    Specified by:
    
    computeRule in class BaseRuleFactory<BigDecimal>
    
    Parameters:
    
    numberOfPoints - Order of the rule to be computed.
    
    Returns:
    
    the computed rule.