MathUtil (Codename One API)

java.lang.Object
- com.codename1.util.MathUtil

```
public abstract class MathUtil
extends Object
```
MathUtil for Java ME. This fills the gap in Java ME Math with a port of Sun's public FDLIBM C-library for IEEE-754.

See Also:

For the Freely Distributable C-library conforming to IEEE-754 floating point math., For the GNU C variant of the same IEEE-754 routines., Another take on the IEEE-754 routines., Yet another take on the IEEE-754 routines., For other approximations., For fast but rough approximations., For more fast but rough approximations.

Constructor Summary

Constructors
Constructor and Description

MathUtil()

Constructors
Constructor and Description
`MathUtil()`

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`static double`	`acos(double a)` Return the arccosine of a.
`static double`	`asin(double a)` Return the arcsine of a.
`static double`	`atan(double a)` Return the arctangent of a, call it b, where a = tan(b).
`static double`	`atan2(double b, double a)` For any real arguments x and y not both equal to zero, atan2(y, x) is the angle in radians between the positive x-axis of a plane and the point given by the coordinates (x, y) on it.
`static double`	`copysign(double x, double y)` Deprecated. Please update your code to use copySign
`static double`	`copySign(double x, double y)`
`static double`	`exp(double a)` Return Math.E to the exponent a.
`static long`	`floor(double a)` Rounds the number down
`static int`	`floor(float a)` Rounds the number down
`static double`	`log(double a)` Return the natural logarithm, ln(a), as it relates to Math.E.
`static double`	`log10(double a)` Return the common base-10 logarithm, log10(a).
`static double`	`nextAfter(double start, double direction)` Returns the next representable floating point number after the first argument in the direction of the second argument.
`static double`	`pow(double a, double b)` Return a to the power of b, sometimes written as a ** b but not to be confused with the bitwise ^ operator.
`static long`	`round(double a)` Rounds the number to the closest integer
`static int`	`round(float a)` Rounds the number to the closest integer
`static double`	`scalb(double x, int n)` scalbn (double x, int n) scalbn(x,n) returns x* 2**n computed by exponent manipulation rather than by actually performing an exponentiation or a multiplication.
`static double`	`scalbn(double x, int n)` Deprecated. Please update your code to use scalb
`static double`	`ulp(double d)` Returns the size of an ulp (units in the last place) of the argument.

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MathUtil
```
public MathUtil()
```
- Method Detail
  - exp
```
public static final double exp(double a)
```
    Return Math.E to the exponent a. This in turn uses ieee7854_exp(double).
  - log
```
public static final double log(double a)
```
    Return the natural logarithm, ln(a), as it relates to Math.E. This in turn uses ieee7854_log(double).
  - log10
```
public static final double log10(double a)
```
    Return the common base-10 logarithm, log10(a). This in turn uses ieee7854_log(double)/ieee7854_log(10.0).
  - pow
```
public static final double pow(double a,
                               double b)
```
    Return a to the power of b, sometimes written as a ** b but not to be confused with the bitwise ^ operator. This in turn uses ieee7854_log(double).
  - asin
```
public static final double asin(double a)
```
    Return the arcsine of a.
  - acos
```
public static final double acos(double a)
```
    Return the arccosine of a.
  - atan
```
public static final double atan(double a)
```
    Return the arctangent of a, call it b, where a = tan(b).
  - atan2
```
public static final double atan2(double b,
                                 double a)
```
    For any real arguments x and y not both equal to zero, atan2(y, x) is the angle in radians between the positive x-axis of a plane and the point given by the coordinates (x, y) on it. The angle is positive for counter-clockwise angles (upper half-plane, y > 0), and negative for clockwise angles (lower half-plane, y < 0). This in turn uses ieee7854_arctan2(double).
  - scalb
```
public static final double scalb(double x,
                                 int n)
```
    scalbn (double x, int n) scalbn(x,n) returns x* 2**n computed by exponent manipulation rather than by actually performing an exponentiation or a multiplication.
  - scalbn
```
public static final double scalbn(double x,
                                  int n)
```
    Deprecated. Please update your code to use scalb
    
    Please update your code to use scalb
    
    Parameters:
    
    x -
    
    n -
    
    Returns:
    
    scalb(x,n)
  - copySign
```
public static final double copySign(double x,
                                    double y)
```
  - copysign
```
public static final double copysign(double x,
                                    double y)
```
    Deprecated. Please update your code to use copySign
    
    Please update your code to use copySign
    
    Parameters:
    
    x -
    
    y -
    
    Returns:
    
    copySign(x,y)
  - ulp
```
public static double ulp(double d)
```
    Returns the size of an ulp (units in the last place) of the argument.
    
    Parameters:
    
    d - value whose ulp is to be returned
    
    Returns:
    
    size of an ulp for the argument
  - nextAfter
```
public static double nextAfter(double start,
                               double direction)
```
    Returns the next representable floating point number after the first argument in the direction of the second argument.
    
    Parameters:
    
    start - starting value
    
    direction - value indicating which of the neighboring representable floating point number to return
    
    Returns:
    
    The floating-point number next to start in the direction of .
  - round
```
public static int round(float a)
```
    Rounds the number to the closest integer
    
    Parameters:
    
    a - the number
    
    Returns:
    
    the closest integer
  - round
```
public static long round(double a)
```
    Rounds the number to the closest integer
    
    Parameters:
    
    a - the number
    
    Returns:
    
    the closest integer
  - floor
```
public static int floor(float a)
```
    Rounds the number down
    
    Parameters:
    
    a - the number
    
    Returns:
    
    a rounded down number
  - floor
```
public static long floor(double a)
```
    Rounds the number down
    
    Parameters:
    
    a - the number
    
    Returns:
    
    a rounded down number

Class MathUtil

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

MathUtil

Method Detail

exp

log

log10

pow

asin

acos

atan

atan2

scalb

scalbn

copySign

copysign

ulp

nextAfter

round

round

floor

floor