Package arcommon

Class MathUtil

java.lang.Object

arcommon.MathUtil

public class MathUtil
extends java.lang.Object

Constructor Summary

Constructors

Constructor	Description
MathUtil()

Method Summary

Modifier and Type	Method	Description
static double	degreesToRadians(double angle)
static int	log10(long number)
static int	log2(long number)
static int	logN(long number, long log)
static double	radiansToDegrees(double radians)
static void	randomize()
static int	randomNumber(int maximumValueNotIncluded)
static java.lang.String	randomString(int length, java.lang.String symbols)
static void	setSeed(long seed)
static int	signum(long number)	Returns the signum function of the argument.
static double	xyDiffToLength(int x1, int y1, int x2, int y2)
static double	xyToAngle(int diffX, int diffY)
static double	xyToLength(int x, int y)

Methods inherited from class java.lang.Object

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

Constructor Detail

MathUtil

public MathUtil()

Method Detail

setSeed

public static void setSeed(long seed)

randomize

public static void randomize()

randomNumber

public static int randomNumber(int maximumValueNotIncluded)

randomString

public static java.lang.String randomString(int length,
                                            java.lang.String symbols)

log10

public static int log10(long number)

log2

public static int log2(long number)

logN

public static int logN(long number,
                       long log)

signum

public static int signum(long number)

Returns the signum function of the argument.
Return zero if the argument is zero, 1 if the argument is greater than zero, -1 if the argument is less than zero.

See Also:

see java.lang.Math.signum(doable) for a double variant, see java.lang.Math.signum(float) for a float variant

xyToAngle

public static double xyToAngle(int diffX,
                               int diffY)

xyToLength

public static double xyToLength(int x,
                                int y)

xyDiffToLength

public static double xyDiffToLength(int x1,
                                    int y1,
                                    int x2,
                                    int y2)

degreesToRadians

public static double degreesToRadians(double angle)

radiansToDegrees

public static double radiansToDegrees(double radians)