Util (Fiji Javadocs 0-SNAPSHOT API)

java.lang.Object
- mpicbg.util.Util

```
public final class Util
extends Object
```
Methods collection for general purpose that do not have a common context

Version:

0.1b

Author:

Stephan Saalfeld <saalfeld@mpi-cbg.de>

Field Summary

Fields
Modifier and Type Field and Description

static float SQRT2

Fields
Modifier and Type	Field and Description
`static float`	`SQRT2`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static float`	`div(float a, float b)` An equivalent to div for float
`static int`	`ldu(int v)` (Hopefully) fast floor log₂ of an unsigned(!) integer value.
`static void`	`max(double[] a, double[] b)` Writes max(a,b) into a
`static void`	`max(float[] a, float[] b)` Writes max(a,b) into a
`static void`	`memset(boolean[] array, boolean value)` For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
`static void`	`memset(byte[] array, byte value)` For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
`static void`	`memset(char[] array, char value)` For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
`static void`	`memset(double[] array, double value)` For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
`static void`	`memset(float[] array, float value)` For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
`static void`	`memset(int[] array, int value)` For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
`static void`	`memset(long[] array, long value)` For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
`static void`	`memset(short[] array, short value)` For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
`static void`	`min(double[] a, double[] b)` Writes min(a,b) into a
`static void`	`min(float[] a, float[] b)` Writes min(a,b) into a
`static float`	`mod(float a, float mod)` An equivalent to % for float
`static int`	`pingPong(int a, int mod)` Return an unsigned integer that bounces in a ping pong manner in the range {@code [0 ...
`static double`	`pow(double a, int b)` Double/Integer version of `Math.pow(double, double)`.
`static float`	`pow(float a, int b)` Float/Integer version of `Math.pow(double, double)`.
`static long`	`pow(int a, int b)` Integer version of `Math.pow(double, double)`.
`static int`	`round(double a)` Round a
`static int`	`round(float a)` Round a
`static int`	`roundPos(double a)` Round a positive a
`static int`	`roundPos(float a)` Round a positive a

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

- Field Detail
  - SQRT2
```
public static final float SQRT2
```
- Method Detail
  - ldu
```
public static final int ldu(int v)
```
    (Hopefully) fast floor log₂ of an unsigned(!) integer value.
    
    Parameters:
    
    v - unsigned integer
    
    Returns:
    
    floor log₂
  - pingPong
```
public static final int pingPong(int a,
                                 int mod)
```
    Return an unsigned integer that bounces in a ping pong manner in the range [0 ... mod - 1].
    
    Parameters:
    
    a - the value to be flipped
    
    mod - the size of the range
    
    Returns:
    
    a flipped in range like a ping pong ball
  - pow
```
public static final long pow(int a,
                             int b)
```
    Integer version of Math.pow(double, double).
    
    Parameters:
    
    a -
    
    b -
    
    Returns:
  - pow
```
public static final float pow(float a,
                              int b)
```
    Float/Integer version of Math.pow(double, double).
    
    Parameters:
    
    a -
    
    b -
    
    Returns:
  - pow
```
public static final double pow(double a,
                               int b)
```
    Double/Integer version of Math.pow(double, double).
    
    Parameters:
    
    a -
    
    b -
    
    Returns:
  - min
```
public static final void min(float[] a,
                             float[] b)
```
    Writes min(a,b) into a
    
    Parameters:
    
    a -
    
    b -
  - max
```
public static final void max(float[] a,
                             float[] b)
```
    Writes max(a,b) into a
    
    Parameters:
    
    a -
    
    b -
  - min
```
public static final void min(double[] a,
                             double[] b)
```
    Writes min(a,b) into a
    
    Parameters:
    
    a -
    
    b -
  - max
```
public static final void max(double[] a,
                             double[] b)
```
    Writes max(a,b) into a
    
    Parameters:
    
    a -
    
    b -
  - round
```
public static final int round(float a)
```
    Round a
    
    Parameters:
    
    a -
  - round
```
public static final int round(double a)
```
    Round a
    
    Parameters:
    
    a -
  - roundPos
```
public static final int roundPos(float a)
```
    Round a positive a
    
    Parameters:
    
    a -
  - roundPos
```
public static final int roundPos(double a)
```
    Round a positive a
    
    Parameters:
    
    a -
  - div
```
public static final float div(float a,
                              float b)
```
    An equivalent to div for float
    
    Parameters:
    
    a -
    
    b -
    
    Returns:
    
    a div b
  - mod
```
public static final float mod(float a,
                              float mod)
```
    An equivalent to % for float
    
    Parameters:
    
    a -
    
    mod -
    
    Returns:
    
    0 <= b < mod
  - memset
```
public static final void memset(byte[] array,
                                byte value)
```
    For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
    
    Parameters:
    
    array -
    
    value -
  - memset
```
public static final void memset(short[] array,
                                short value)
```
    For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
    
    Parameters:
    
    array -
    
    value -
  - memset
```
public static final void memset(int[] array,
                                int value)
```
    For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
    
    Parameters:
    
    array -
    
    value -
  - memset
```
public static final void memset(long[] array,
                                long value)
```
    For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
    
    Parameters:
    
    array -
    
    value -
  - memset
```
public static final void memset(float[] array,
                                float value)
```
    For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
    
    Parameters:
    
    array -
    
    value -
  - memset
```
public static final void memset(double[] array,
                                double value)
```
    For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
    
    Parameters:
    
    array -
    
    value -
  - memset
```
public static final void memset(boolean[] array,
                                boolean value)
```
    For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
    
    Parameters:
    
    array -
    
    value -
  - memset
```
public static final void memset(char[] array,
                                char value)
```
    For Java, the fastest way doing memset(x) Found at http://burks.brighton.ac.uk/burks/language/java/jprogfaq/faq_b.htm
    
    Parameters:
    
    array -
    
    value -

Class Util

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

SQRT2

Method Detail

ldu

pingPong

pow

pow

pow

min

max

min

max

round

round

roundPos

roundPos

div

mod

memset

memset

memset

memset

memset

memset

memset

memset