org.apache.commons.lang.math
Class IEEE754rUtils

java.lang.Object
  org.apache.commons.lang.math.IEEE754rUtils

public class IEEE754rUtils

extends java.lang.Object

Provides IEEE-754r variants of NumberUtils methods.

See: http://en.wikipedia.org/wiki/IEEE_754r

Since:

2.4

Version:

$Id: IEEE754rUtils.java 634088 2008-03-06 00:06:05Z niallp $

Constructor Summary

IEEE754rUtils()

Method Summary

static double	max(double[] array) Returns the maximum value in an array.
static double	max(double a, double b) Gets the maximum of two double values.
static double	max(double a, double b, double c) Gets the maximum of three double values.
static float	max(float[] array) Returns the maximum value in an array.
static float	max(float a, float b) Gets the maximum of two float values.
static float	max(float a, float b, float c) Gets the maximum of three float values.
static double	min(double[] array) Returns the minimum value in an array.
static double	min(double a, double b) Gets the minimum of two double values.
static double	min(double a, double b, double c) Gets the minimum of three double values.
static float	min(float[] array) Returns the minimum value in an array.
static float	min(float a, float b) Gets the minimum of two float values.
static float	min(float a, float b, float c) Gets the minimum of three float values.

Methods inherited from class java.lang.Object

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

Constructor Detail

IEEE754rUtils

public IEEE754rUtils()

Method Detail

min

public static double min(double[] array)

Returns the minimum value in an array.

Parameters:

array - an array, must not be null or empty

Returns:

the minimum value in the array

Throws:

java.lang.IllegalArgumentException - if array is null

java.lang.IllegalArgumentException - if array is empty

min

public static float min(float[] array)

Returns the minimum value in an array.

Parameters:

array - an array, must not be null or empty

Returns:

the minimum value in the array

Throws:

java.lang.IllegalArgumentException - if array is null

java.lang.IllegalArgumentException - if array is empty

min

public static double min(double a,
                         double b,
                         double c)

Gets the minimum of three double values.

NaN is only returned if all numbers are NaN as per IEEE-754r.

Parameters:

a - value 1

b - value 2

c - value 3

Returns:

the smallest of the values

min

public static double min(double a,
                         double b)

Gets the minimum of two double values.

NaN is only returned if all numbers are NaN as per IEEE-754r.

Parameters:

a - value 1

b - value 2

Returns:

the smallest of the values

min

public static float min(float a,
                        float b,
                        float c)

Gets the minimum of three float values.

NaN is only returned if all numbers are NaN as per IEEE-754r.

Parameters:

a - value 1

b - value 2

c - value 3

Returns:

the smallest of the values

min

public static float min(float a,
                        float b)

Gets the minimum of two float values.

NaN is only returned if all numbers are NaN as per IEEE-754r.

Parameters:

a - value 1

b - value 2

Returns:

the smallest of the values

max

public static double max(double[] array)

Returns the maximum value in an array.

Parameters:

array - an array, must not be null or empty

Returns:

the minimum value in the array

Throws:

java.lang.IllegalArgumentException - if array is null

java.lang.IllegalArgumentException - if array is empty

max

public static float max(float[] array)

Returns the maximum value in an array.

Parameters:

array - an array, must not be null or empty

Returns:

the minimum value in the array

Throws:

java.lang.IllegalArgumentException - if array is null

java.lang.IllegalArgumentException - if array is empty

max

public static double max(double a,
                         double b,
                         double c)

Gets the maximum of three double values.

NaN is only returned if all numbers are NaN as per IEEE-754r.

Parameters:

a - value 1

b - value 2

c - value 3

Returns:

the largest of the values

max

public static double max(double a,
                         double b)

Gets the maximum of two double values.

NaN is only returned if all numbers are NaN as per IEEE-754r.

Parameters:

a - value 1

b - value 2

Returns:

the largest of the values

max

public static float max(float a,
                        float b,
                        float c)

Gets the maximum of three float values.

NaN is only returned if all numbers are NaN as per IEEE-754r.

Parameters:

a - value 1

b - value 2

c - value 3

Returns:

the largest of the values

max

public static float max(float a,
                        float b)

Gets the maximum of two float values.

NaN is only returned if all numbers are NaN as per IEEE-754r.

Parameters:

a - value 1

b - value 2

Returns:

the largest of the values