ch.obermuhlner.math.big.internal

Class ExpCalculator

java.lang.Object

ch.obermuhlner.math.big.internal.SeriesCalculator

ch.obermuhlner.math.big.internal.ExpCalculator

public class ExpCalculator
extends SeriesCalculator

Calculates exp using the Maclaurin series.

See Wikipedia: Taylorreihe

No argument checking or optimizations are done. This implementation is not intended to be called directly.

Field Summary

Fields

Modifier and Type	Field and Description
static ExpCalculator	INSTANCE

Method Summary

Modifier and Type	Method and Description
protected void	calculateNextFactor() Calculates the factor of the next term.
protected PowerIterator	createPowerIterator(java.math.BigDecimal x, java.math.MathContext mathContext) Creates the PowerIterator used for this series.
protected BigRational	getCurrentFactor() Returns the factor of the highest term already calculated.

Methods inherited from class ch.obermuhlner.math.big.internal.SeriesCalculator

calculate, getFactor

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

public static final ExpCalculator INSTANCE

Method Detail

getCurrentFactor

protected BigRational getCurrentFactor()

Description copied from class: SeriesCalculator

Returns the factor of the highest term already calculated.

When called for the first time will return the factor of the first term (index 0).

After this call the method SeriesCalculator.calculateNextFactor() will be called to prepare for the next term.

Specified by:

getCurrentFactor in class SeriesCalculator

Returns:

the factor of the highest term

calculateNextFactor

protected void calculateNextFactor()

Description copied from class: SeriesCalculator

Calculates the factor of the next term.

Specified by:

calculateNextFactor in class SeriesCalculator

createPowerIterator

protected PowerIterator createPowerIterator(java.math.BigDecimal x,
                                            java.math.MathContext mathContext)

Description copied from class: SeriesCalculator

Creates the PowerIterator used for this series.

Specified by:

createPowerIterator in class SeriesCalculator

Parameters:

x - the value x

mathContext - the MathContext

Returns:

the PowerIterator