edu.jas.arith
Class PrimeList

java.lang.Object
  edu.jas.arith.PrimeList

All Implemented Interfaces:

java.lang.Iterable<java.math.BigInteger>

public final class PrimeList
extends java.lang.Object
implements java.lang.Iterable<java.math.BigInteger>

List of big primes. Provides an Iterator for generating prime numbers. Similar to ALDES/SAC2 SACPOL.PRIME list.

Author:

Heinz Kredel See Knuth vol 2,page 390, for list of known primes. See ALDES/SAC2 SACPOL.PRIME

Field Summary

protected static java.util.List<java.math.BigInteger>

val The list of probable primes.

Constructor Summary

PrimeList()
Constructor for PrimeList.

PrimeList(int n)
Constructor for PrimeList with n primes.

Method Summary

protected static boolean	checkPrimes() Check if the list contains really prime numbers.
java.math.BigInteger	get(int i) get prime at index i.
protected static java.math.BigInteger	getLongPrime(int n, int m) Method to compute a prime as 2**n - m.
java.util.Iterator<java.math.BigInteger>	iterator() Iterator.
int	size() size of current list.
java.lang.String	toString() toString.

Methods inherited from class java.lang.Object

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

Field Detail

val

protected static final java.util.List<java.math.BigInteger> val

The list of probable primes.

Constructor Detail

PrimeList

public PrimeList()

Constructor for PrimeList.

PrimeList

public PrimeList(int n)

Constructor for PrimeList with n primes.

Parameters:

n - initial number of primes.

Method Detail

getLongPrime

protected static java.math.BigInteger getLongPrime(int n,
                                                   int m)

Method to compute a prime as 2**n - m.

Parameters:

n - power for 2.

m - for 2**n - m.

checkPrimes

protected static boolean checkPrimes()

Check if the list contains really prime numbers.

toString

public java.lang.String toString()

toString.

Overrides:

toString in class java.lang.Object

size

public int size()

size of current list.

get

public java.math.BigInteger get(int i)

get prime at index i.

iterator

public java.util.Iterator<java.math.BigInteger> iterator()

Iterator.

Specified by:

iterator in interface java.lang.Iterable<java.math.BigInteger>