com.partnersoft.data

Class MathLib

java.lang.Object

com.partnersoft.data.MathLib

All Implemented Interfaces:

Lib

public class MathLib
extends java.lang.Object
implements Lib

Math and number functions.

Copyright 2006 Partner Software, Inc.

Author:

Paul Reavis, Russell Cagle

Method Summary

Methods

Modifier and Type	Method and Description
static long	combinations(int n, int m) Returns the number of combinations of n things, taken m at a time.
static long	factorial(int n) Returns the factorial of the given input (n!).
static double	setPrecision(double victim, int places) Reduces the precision of a double-precision number by rounding it to a specified number of decimal places.
static float	setPrecision(float victim, int places) Reduces the precision of a floating-point number by rounding it to a specified number of decimal places.

Methods inherited from class java.lang.Object

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

Method Detail

setPrecision

public static double setPrecision(double victim,
                  int places)

Reduces the precision of a double-precision number by rounding it to a specified number of decimal places.

setPrecision

public static float setPrecision(float victim,
                 int places)

Reduces the precision of a floating-point number by rounding it to a specified number of decimal places.

factorial

public static long factorial(int n)

Returns the factorial of the given input (n!).

Parameters:

n -

Returns:

n!

combinations

public static long combinations(int n,
                int m)

Returns the number of combinations of n things, taken m at a time.

Parameters:

n -

m -

Returns:

n! / (m! * (n-m)!)