ch.javasoft.math
Class BigMath

java.lang.Object
  ch.javasoft.math.BigMath

public class BigMath
extends Object

Similar to Math, but for big numbers such as

• BigInteger
• BigDecimal
• BigFraction

Constructor Summary

BigMath()


Method Summary

static BigDecimal	pi(int scale) Gauss-Legendre Algorithm to calculate pi upto roughly the given scale
static double	sqrt(BigDecimal num) Babylonian square root method (Newton's method) to compute the square root of the given big decimal up to double precision.
static BigDecimal	sqrt(BigDecimal num, int scale) Babylonian square root method (Newton's method) to compute the square root of the given big decimal number up to roughly the given scale.
static double	sqrt(BigFraction num) Babylonian square root method (Newton's method) to compute the square root of the given big fraction number up to double precision.
static BigDecimal	sqrt(BigFraction num, int scale) Babylonian square root method (Newton's method) to compute the square root of the given big fraction number up to roughly the given scale.
static double	sqrt(BigInteger num) Babylonian square root method (Newton's method) to compute the square root of the given big integer up to double precision.
static BigDecimal	sqrt(BigInteger num, int scale) Babylonian square root method (Newton's method) to compute the square root of the given big integer up to roughly the given scale.
static int	sqrt(int num)
static long	sqrt(long num)
static long	sqrtBabylonian(long num)

Methods inherited from class java.lang.Object

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

Constructor Detail

BigMath

public BigMath()

Method Detail

pi

public static BigDecimal pi(int scale)

Gauss-Legendre Algorithm to calculate pi upto roughly the given scale

Parameters:

scale - scale of the BigDecimal PI to be returned

Returns:

PI

sqrtBabylonian

public static long sqrtBabylonian(long num)

sqrt

public static long sqrt(long num)

sqrt

public static int sqrt(int num)

sqrt

public static BigDecimal sqrt(BigDecimal num,
                              int scale)

Babylonian square root method (Newton's method) to compute the square root of the given big decimal number up to roughly the given scale.

Parameters:

scale - scale of the BigDecimal square root to be returned

Returns:

sqrt(num)

sqrt

public static BigDecimal sqrt(BigInteger num,
                              int scale)

Babylonian square root method (Newton's method) to compute the square root of the given big integer up to roughly the given scale.

Parameters:

scale - scale of the BigDecimal square root to be returned

Returns:

sqrt(num)

sqrt

public static BigDecimal sqrt(BigFraction num,
                              int scale)

Babylonian square root method (Newton's method) to compute the square root of the given big fraction number up to roughly the given scale.

Parameters:

scale - scale of the BigDecimal square root to be returned

Returns:

sqrt(num)

sqrt

public static double sqrt(BigDecimal num)

Babylonian square root method (Newton's method) to compute the square root of the given big decimal up to double precision.

Returns:

sqrt(num)

sqrt

public static double sqrt(BigInteger num)

Babylonian square root method (Newton's method) to compute the square root of the given big integer up to double precision.

Returns:

sqrt(num)

sqrt

public static double sqrt(BigFraction num)

Babylonian square root method (Newton's method) to compute the square root of the given big fraction number up to double precision.

Returns:

sqrt(num)