javaewah32
Class NonEmptyVirtualStorage32

java.lang.Object
  javaewah32.NonEmptyVirtualStorage32

All Implemented Interfaces:

BitmapStorage32

public class NonEmptyVirtualStorage32
extends Object
implements BitmapStorage32

This is a BitmapStorage that can be used to determine quickly if the result of an operation is non-trivial... that is, whether there will be at least on set bit.

Since:

0.5.0

Author:

Daniel Lemire

Constructor Summary

NonEmptyVirtualStorage32()

Method Summary

int	add(int newdata) If the word to be added is non-zero, a NonEmptyException exception is thrown.
int	addStreamOfDirtyWords(int[] data, int start, int number) throws a NonEmptyException exception
int	addStreamOfEmptyWords(boolean v, int number) If the boolean value is true, then it throws a NonEmptyException exception, otherwise, nothing happens.
int	addStreamOfNegatedDirtyWords(int[] data, int start, int number) throws a NonEmptyException exception
void	setSizeInBits(int bits) Does nothing.

Methods inherited from class java.lang.Object

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

Constructor Detail

NonEmptyVirtualStorage32

public NonEmptyVirtualStorage32()

Method Detail

add

public int add(int newdata)

If the word to be added is non-zero, a NonEmptyException exception is thrown.

Specified by:

add in interface BitmapStorage32

Parameters:

newdata - the word

Returns:

the number of words added to the buffer

See Also:

javaewah.BitmapStorage#add(int)

addStreamOfEmptyWords

public int addStreamOfEmptyWords(boolean v,
                                 int number)

If the boolean value is true, then it throws a NonEmptyException exception, otherwise, nothing happens.

Specified by:

addStreamOfEmptyWords in interface BitmapStorage32

Parameters:

v - zeros or ones

number - how many to words add

Returns:

the number of words added to the buffer

See Also:

javaewah.BitmapStorage#addStreamOfEmptyWords(boolean, int)

addStreamOfDirtyWords

public int addStreamOfDirtyWords(int[] data,
                                 int start,
                                 int number)

throws a NonEmptyException exception

Specified by:

addStreamOfDirtyWords in interface BitmapStorage32

Parameters:

data - the dirty words

start - the starting point in the array

number - the number of dirty words to add

Returns:

how many (compressed) words were added to the bitmap

See Also:

javaewah.BitmapStorage#addStreamOfDirtyWords(int[], int, int)

addStreamOfNegatedDirtyWords

public int addStreamOfNegatedDirtyWords(int[] data,
                                        int start,
                                        int number)

throws a NonEmptyException exception

Specified by:

addStreamOfNegatedDirtyWords in interface BitmapStorage32

Parameters:

data - the dirty words

start - the starting point in the array

number - the number of dirty words to add

Returns:

how many (compressed) words were added to the bitmap

See Also:

javaewah.BitmapStorage#addStreamOfNegatedDirtyWords(int[], int, int)

setSizeInBits

public void setSizeInBits(int bits)

Does nothing.

Specified by:

setSizeInBits in interface BitmapStorage32

Parameters:

bits - number of bits

See Also:

BitmapStorage.setSizeInBits(int)