mae.tut.num
Class Cruncher

java.lang.Object
  mae.tut.num.Cruncher

public class Cruncher

extends java.lang.Object

Defines static methods to calculate several functions.

Greatest Common Divisor and Exponential functions are included.

Field Summary

static Number	e Decimal e
static Number	i Complex i

Method Summary

static float	exp(float x) Raises argument x to e (calls Math.log(x))
Number	exp(Number n) Raises Number n to e (uses Math class)
static float	expPS(float x) Raises argument x to e approximately.
Number	expPS(Number n) Raises Number n to e (power series approximation)
static long	gcd(long a, long b) Returns the greatest common divisor of the arguments.
static float	log(float x) Inverse of exp: log of x to base e (calls Math.log(x))
Number	log(Number n) Inverse of exp: log of n to base e (Works with any subclass)
static float	pow(float x, float a) Power to the a of x (calls Math.pow(x, a))
Number	pow(Number n, Number a) Power to the a of x (Works with any subclass)
static float	sqrt(float x) Square root of x (calls Math.sqrt(x))
Number	sqrt(Number n) Square root of n (Works with any subclass)
java.lang.String	toString() String representation of this Object

Methods inherited from class java.lang.Object

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

Field Detail

i

public static final Number i

Complex i

e

public static final Number e

Decimal e

Method Detail

toString

public java.lang.String toString()

String representation of this Object

expPS

public Number expPS(Number n)

Raises Number n to e (power series approximation)

exp

public Number exp(Number n)

Raises Number n to e (uses Math class)

log

public Number log(Number n)

Inverse of exp: log of n to base e (Works with any subclass)

sqrt

public Number sqrt(Number n)

Square root of n (Works with any subclass)

pow

public Number pow(Number n,
                  Number a)

Power to the a of x (Works with any subclass)

expPS

public static float expPS(float x)

Raises argument x to e approximately. (Should return a value close to Math.exp(x))

exp

public static float exp(float x)

Raises argument x to e (calls Math.log(x))

log

public static float log(float x)

Inverse of exp: log of x to base e (calls Math.log(x))

sqrt

public static float sqrt(float x)

Square root of x (calls Math.sqrt(x))

pow

public static float pow(float x,
                        float a)

Power to the a of x (calls Math.pow(x, a))

gcd

public static long gcd(long a,
                       long b)

Returns the greatest common divisor of the arguments.

Invokes static method Rational.gcd().