com.softsynth.math

Class PrimeFactors

java.lang.Object

com.softsynth.math.PrimeFactors

public class PrimeFactors
extends java.lang.Object

Tool for factoring primes and prime ratios. This class contains a static array of primes generated using the Sieve of Eratosthenes.

Author:

Phil Burk (C) 2011 Mobileer Inc

Constructor Summary

Constructors

Constructor and Description
PrimeFactors(int[] factors)
PrimeFactors(int numerator, int denominator)

Method Summary

Modifier and Type	Method and Description
static int[]	add(int[] factorsA, int[] factorsB)
PrimeFactors	add(PrimeFactors pf)
static int[]	factor(int n)
int[]	getFactors()
JustRatio	getJustRatio()
static int	getPrime(int n) Get prime from table.
static int	getPrimeCount()
static int[]	subtract(int[] factorsA, int[] factorsB)
PrimeFactors	subtract(PrimeFactors pf)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

PrimeFactors

public PrimeFactors(int[] factors)

PrimeFactors

public PrimeFactors(int numerator,
                    int denominator)

Method Detail

subtract

public PrimeFactors subtract(PrimeFactors pf)

add

public PrimeFactors add(PrimeFactors pf)

subtract

public static int[] subtract(int[] factorsA,
                             int[] factorsB)

add

public static int[] add(int[] factorsA,
                        int[] factorsB)

factor

public static int[] factor(int n)

getPrime

public static int getPrime(int n)

Get prime from table.

Parameters:

n - Warning: Do not exceed getPrimeCount()-1.

Returns:

Nth prime number, the 0th prime is 2

getPrimeCount

public static int getPrimeCount()

Returns:

the number of primes stored in the table

getJustRatio

public JustRatio getJustRatio()

getFactors

public int[] getFactors()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object