ch.obermuhlner.math.big.internal

Interface PowerIterator

All Known Implementing Classes:

PowerNIterator, PowerTwoNIterator, PowerTwoNPlusOneIterator

public interface PowerIterator

Iterator over the powers of a value x.

This API allows to efficiently calculate the various powers of x in a taylor series by storing intermediate results.

For example xⁿ can be calculated using one multiplication by storing the previously calculated x^n-1 and x.

getCurrentPower() will be called first to retrieve the initial value.

For later iterations calculateNextPower() will be called before getCurrentPower().

Method Summary

Modifier and Type	Method and Description
void	calculateNextPower() Calculates the next power.
java.math.BigDecimal	getCurrentPower() Returns the current power.

Method Detail

getCurrentPower

java.math.BigDecimal getCurrentPower()

Returns the current power.

Returns:

the current power.

calculateNextPower

void calculateNextPower()

Calculates the next power.