math
Class MathUtils

java.lang.Object
  math.MathUtils

public class MathUtils
extends java.lang.Object

Field Summary

static double

LOG2

Constructor Summary

MathUtils()

Method Summary

static int	atan(int y, int x)
static double	cos(double alpha)
static int	gcd(int a, int b)
static double	getGauss(double x, double xc, double sigma)
static double[]	getGauss(int n)
static double	getLOG2()
static int	getLogBase2(double d)
static double	getTrapezoidal(double x, double a, double b, double c, double d)
static boolean	isPowerOfTwo(double l)
static int	isqrt(int x)
static short	isqrt(short x)
static double	log2(double l)
static int	log2(int l)
static double	max(int x, int y)
static boolean	nextTo(int x0, int y0, int x1, int y1)
static boolean	odd(int i)
static boolean	onLine(int x0, int y0, int x1, int y1, int x2, int y2)
static void	print(double[] d)
static int	roundToIntegralPowerOf2(int n)
static int	sign(int x)
static double	sin(double alpha)
static float	sqrt(double f)
static float	sqrt(float f)
static void	testGauss()
static void	testLongIsqrt()
static void	writeOutRandomNumbersToAFile()

Methods inherited from class java.lang.Object

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

Field Detail

LOG2

public static double LOG2

Constructor Detail

MathUtils

public MathUtils()

Method Detail

writeOutRandomNumbersToAFile

public static void writeOutRandomNumbersToAFile()

odd

public static boolean odd(int i)

getLogBase2

public static int getLogBase2(double d)

Parameters:

d - input argument to the log2 function

Returns:

base 2 log.

getGauss

public static double getGauss(double x,
                              double xc,
                              double sigma)

getGauss

public static double[] getGauss(int n)

testGauss

public static void testGauss()

print

public static final void print(double[] d)

testLongIsqrt

public static void testLongIsqrt()

isqrt

public static short isqrt(short x)

isqrt

public static int isqrt(int x)

roundToIntegralPowerOf2

public static int roundToIntegralPowerOf2(int n)

getTrapezoidal

public static double getTrapezoidal(double x,
                                    double a,
                                    double b,
                                    double c,
                                    double d)

gcd

public static int gcd(int a,
                      int b)

log2

public static int log2(int l)

getLOG2

public static double getLOG2()

log2

public static double log2(double l)

isPowerOfTwo

public static boolean isPowerOfTwo(double l)

sign

public static int sign(int x)

cos

public static double cos(double alpha)

sin

public static double sin(double alpha)

atan

public static int atan(int y,
                       int x)

nextTo

public static boolean nextTo(int x0,
                             int y0,
                             int x1,
                             int y1)

onLine

public static boolean onLine(int x0,
                             int y0,
                             int x1,
                             int y1,
                             int x2,
                             int y2)

max

public static double max(int x,
                         int y)

sqrt

public static float sqrt(float f)

sqrt

public static float sqrt(double f)