Pi.BorweinPiCalculator

java.lang.Object
- org.apfloat.samples.Pi.BorweinPiCalculator

All Implemented Interfaces:

java.io.Serializable, Operation<Apfloat>

Enclosing class:

Pi
```
public static class Pi.BorweinPiCalculator
extends java.lang.Object
implements Operation<Apfloat>
```
Calculates pi using the Borweins' quartic algorithm.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

private long precision

private int radix

private static long serialVersionUID

Constructor Summary

Constructors
Constructor Description

BorweinPiCalculator(long precision, int radix)
Construct a pi calculator with the specified precision and radix.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`private static long`	`borweinPrecision(int k, int r, int radix)`
`Apfloat`	`execute()`	Calculate pi using the Borweins' quartic iteration.

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

- Field Detail
  - serialVersionUID
```
private static final long serialVersionUID
```
    See Also:
    
    Constant Field Values
  - precision
```
private long precision
```
  - radix
```
private int radix
```
- Constructor Detail
  - BorweinPiCalculator
```
public BorweinPiCalculator(long precision,
                           int radix)
```
    Construct a pi calculator with the specified precision and radix.
    
    Parameters:
    
    precision - The target precision.
    
    radix - The radix to be used.
- Method Detail
  - execute
```
public Apfloat execute()
```
    Calculate pi using the Borweins' quartic iteration.
    
    Specified by:
    
    execute in interface Operation<Apfloat>
    
    Returns:
    
    Return value of the operation.
  - borweinPrecision
```
private static long borweinPrecision(int k,
                                     int r,
                                     int radix)
```