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

Fields

Modifier and Type	Field and Description
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

Constructors

Constructor and Description
Maths()

Method Summary

Modifier and Type	Method and Description
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

equals, 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.