tig.maths
Class Maths

java.lang.Object
  |
  +--tig.maths.Maths

public abstract class Maths

extends java.lang.Object

Abstract class containing mathematical constants and static methods.

Field Summary

static double	ARCSEC_TO_RAD Constant to convert arc seconds to radians, whose value is p / (180 * 3600).
static double	ln10 Constant whose value is ln(10).
static double	RAD_TO_ARCSEC Constant to convert radians to arc seconds, whose value is 180 * 3600 / p.
static double	TWOPI Constant whose value is 2 x p.

Constructor Summary

Maths()

Method Summary

static double	atan3(double y, double x) Computation of arcTangent, giving a result in [0, 2*p[.
static double	log10(double x) Computes the 10 based logarithm of a number.
static double	max(double[] a) Returns the greatest double of an array.
static int	max(int[] a) Returns the greatest integer of an array.
static double	min(double[] a) Returns the smallest double of an array.
static double	mod360(double nb) Reduction of a number in the interval [0, 360].
static int	mod360(int nb) Reduction of a number in the interval [0, 360], for an integer.
static double	modX(double nb, double limit) Reduction of a number in the interval [0, limit].

Methods inherited from class java.lang.Object

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

Field Detail

TWOPI

public static final double TWOPI

Constant whose value is 2 x p.

See Also:

Constant Field Values

ln10

public static final double ln10

Constant whose value is ln(10).

See Also:

Constant Field Values

ARCSEC_TO_RAD

public static final double ARCSEC_TO_RAD

Constant to convert arc seconds to radians, whose value is p / (180 * 3600).

See Also:

Constant Field Values

RAD_TO_ARCSEC

public static final double RAD_TO_ARCSEC

Constant to convert radians to arc seconds, whose value is 180 * 3600 / p.

See Also:

Constant Field Values

Constructor Detail

Maths

public Maths()

Method Detail

mod360

public static double mod360(double nb)

Reduction of a number in the interval [0, 360].

Parameters:

nb - any number.

Returns:

nb modulo 360.

mod360

public static int mod360(int nb)

Reduction of a number in the interval [0, 360], for an integer.

Parameters:

nb - any number.

Returns:

nb modulo 360.

modX

public static double modX(double nb,
                          double limit)

Reduction of a number in the interval [0, limit].

Parameters:

nb - any number.

limit - any positive number.

Returns:

nb modulo limit.

atan3

public static double atan3(double y,
                           double x)

Computation of arcTangent, giving a result in [0, 2*p[.

Returns:

A number alpha such as cos(alpha) = x/sqrt(x*x + y*y) and sin(alpha) = y/sqrt(x*x + y*y) and alpha belongs to [0, 2*p[.

log10

public static double log10(double x)

Computes the 10 based logarithm of a number.

Returns:

10 based Logarithm of x.

max

public static int max(int[] a)

Returns the greatest integer of an array.

max

public static double max(double[] a)

Returns the greatest double of an array.

min

public static double min(double[] a)

Returns the smallest double of an array.